feat: add fork from https://github.com/oneearedrabbit/badger-system-ii

README.md

@@ -1,3 +1,57 @@
-# personal-badger
+# Badger2040 System II
 
-Personal Badger 2040 (from Pimoroni)
+Tired of boring badges that just blend in with the crowd? You want to show off your quirky personality and love of retro technology? You are looking for a fun project to bond with your engineering team? Look no further than the programmable e-ink badge!
+
+https://kruzenshtern.org/the-e-ink-badge-the-coolest-badge-you-didnt-know-you-needed/
+
+![image](https://user-images.githubusercontent.com/198995/219474204-890703d2-fb32-4299-a39b-2d434ac3f215.png)
+
+## Source code
+
+Don't expect much, but it works (tm). See in /src.
+
+## Components
+
+1. Badger 2040: https://shop.pimoroni.com/products/badger-2040
+2. Coin Cell Battery Holder: https://www.adafruit.com/product/783
+3. 2x CR2032: https://www.amazon.com/gp/product/B078GC5K81/
+4. 4x M2 8mm bolts: https://www.amazon.com/gp/product/B01BNIHG0E/
+5. 3D-printed case: see /case folder. I was using Prusament PLA: https://www.prusa3d.com/product/prusament-pla-ms-pink-blend-970g/
+
+## A quick glance at assembly steps
+
+1. 3D print top and bottom panels. 
+2. Disassemble & attach a 2xCR2032 battery holder
+3. Assemble the badge, use hot glue whenever applicable
+4. Upload pimonori-badger2040-micropython bootloader
+5. Upload Python scripts
+
+## License & acknowledgements
+
+Inspiration sources for the case:
+
+- https://kaenner.de/badger2040 (CC4)
+- https://www.thingiverse.com/thing:5320100/files (CC4)
+
+I ended up using an OpenSCAD blueprint by usedbytes to get measurements of the device. Reconstructed/synthesized a new case in Fusion360. Noticeable changes:
+- A different battery holder / back pannel to simplify the assembly to some extent
+- Two coin cells vs three
+- Added hidden buttons inspired by Känner's design
+- Back panel is inspired by Känner's design too, I like that connectors are accessible
+- Battery toggle button
+- Any mistakes are exclusively mine
+
+Source code:
+- To a large extent based on pimoroni Badger2040 OS example: https://github.com/pimoroni/pimoroni-pico/tree/main/micropython/examples/badger2040 (MIT)
+- Font & rendering: custom code, but it is not worth extracting it to a standalone app/library. Let's stick with MIT for simplicity too.
+
+Assets:
+- Font: 16bfZX https://www.pentacom.jp/pentacom/bitfontmaker2/gallery/?id=246 (Public domain)
+- Clippy: hand-drawn, I think the character is trademarked by Microsoft though.
+- Other assets: hand-drawn
+
+What does it mean in terms of license? I guess, it is good for a hobby project. Hire a lawyer to check if it is good for commercial use.
+
+## From
+
+The folks at [Census](http://getcensus.com) originally put this together. Have data? We'll sync your data warehouse with your CRM and the customer success apps critical to your team.

case/.gitkeep

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+

case/README.md

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+# 3D printed case for Badger2040
+
+A 3D-printed case has a slot for two CR2032 batteries. Badger 2040 runs
+on RPi 2040. It is energy efficient, and batteries should last for a
+long time. Also comes with a battery toggle switch to shut everything down.
+
+The device is approximately 12mm thick, see below. I lost my digital
+caliper, may replace the side shot later.
+
+## Assembly
+
+Steps:
+- 3D print top and bottom panels. PLA plastic is good enough.
+- Disassemble & attach a 2xCR2032 battery holder
+  https://www.adafruit.com/product/783.
+- Assemble the badge, use hot glue whenever applicable
+
+## Known bugs
+
+- A 3D model has minor misalignments that I did not bother to fix,
+  e.g. a LED hole is 0.1-0.2mm off to the left.
+
+## Photos
+
+![image](https://user-images.githubusercontent.com/198995/219485328-1d66b0d7-2c20-477a-9fee-6ed1c341de5f.png)
+
+![image](https://user-images.githubusercontent.com/198995/221962577-9ab8847a-aaa5-4b5d-9cbb-67dff24e7f34.jpeg)
+

src/.gitkeep

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+

src/README.md

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+# Badger2040, Apple Macintosh 1984
+ 
+## Overview
+
+This is a custom UI for Badger 2040 that I built for the Census
+engineering offsite in 2022. I aimed to recreate the iconic 1984
+Macintosh UI in a compact design.
+
+## Known bugs
+
+I had to cut some corners, so that I could finish the assembly of a small batch
+before the event. Here is a list of known bugs:
+- If you open the same application twice (e.g. open QR app, open Badge
+  app, and open QR app again), the device will restart and show a
+  welcome screen. I shouldn't have tried to build a multi app
+  experience in the first place. IMO, it is too much to do to
+  implement this right in Python. I think if it was Lisp environment,
+  it would have been easier.
+- I forgot to adjust the battery voltage to calculate the battery
+  level. The device may show that a battery is empty or it is not
+  plugged in.
+
+## Upload steps
+
+- Upload pimonori-badger2040-micropython bootloader
+- Upload Python scripts
+
+## Edit text
+
+- Badge: badges/badge.txt
+- QR: qrcodes/qrcode.txt
+- Clippy: fortune/cookie.txt
+
+## Edit images
+
+1. Clone https://github.com/pimoroni/pimoroni-pico
+2. `python3 examples/badger2040/image_converter/convert.py --binary image.png image.bin` 
+3. cp image.bin badges/badge.bin
+
+## User Guide
+
+- A button opens Badge app
+- B button opens QR app
+- C button opens Special app. Up/Down buttons randomly load a new
+  quote
+- A + C buttons open Welcome screen

src/badge_app.py

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+import badger2040
+import os
+import badger_os
+from widgets import draw_window, pprint, ptitle, plength, button, draw_ui
+
+IMAGE_WIDTH = 96
+IMAGE_HEIGHT = 96
+DELTA = 0
+
+# Check that the badges directory exists, if not, make it
+try:
+    os.mkdir("badges")
+except OSError:
+    pass
+    
+# Load all available badge Code Files
+try:
+    CODES = [f for f in os.listdir("/badges") if f.endswith(".txt")]
+    TOTAL_CODES = len(CODES)
+except OSError:
+    pass
+
+print(f'There are {TOTAL_CODES} badges available:')
+for codename in CODES:
+    print(f'File: {codename}')
+
+display = badger2040.Badger2040()
+display.update_speed(badger2040.UPDATE_NORMAL)
+
+state = {
+    "running": "badge_app",
+}
+
+def draw_badge(n):
+    draw_window(display, 6, 26, 182, 94, " Badge ")
+
+    file = CODES[n]
+    codetext = open("badges/{}".format(file), "r")
+
+    lines = codetext.read().strip().split("\n")
+    name_text = lines.pop(0)
+    title_text = lines.pop(0)
+    company_text = lines.pop(0)
+    github_text = lines.pop(0)
+    badge_path = lines.pop(0)
+    
+    ptitle(display, name_text, 15, 44, 0)
+    
+    if len(github_text.strip()) > 0:
+        # github icon
+        display.image(bytearray((0x3c,0x00,0xa5,0x81,0x81,0xc3,0x66,0x84)), 8, 8, 18, 86)
+        display.image(bytearray((0x00,0x00,0x00,0x00,0x00,0x00,0xfc,0xfe)), 8, 8, 18, 78)
+        display.image(bytearray((0x03,0x03,0x03,0x03,0x03,0x02,0x01,0x00)), 8, 8, 10, 86)
+        display.image(bytearray((0x0,0x0,0x0,0x0,0x0,0x0,0x0,0x01)), 8, 8, 10, 78)
+    
+    pprint(display, title_text, 15, 60, 0)
+    pprint(display, company_text, 15, 72, 0)
+    pprint(display, github_text, 30, 84, 0)
+    
+    badge_dat = bytearray(int(IMAGE_WIDTH * IMAGE_HEIGHT / 8))
+    open(f"badges/{badge_path}", "rb").readinto(badge_dat)
+        
+    display.image(badge_dat, IMAGE_WIDTH, IMAGE_HEIGHT, 194, 26)
+
+
+def render():
+    display.pen(15)
+    display.clear()
+
+    draw_ui(display, "Badge")
+    
+    draw_badge(0)
+    
+    display.update()    
+
+changed = not badger2040.woken_by_button()
+
+while True:
+    if display.pressed(badger2040.BUTTON_A):
+        changed = True
+#         button(display, badger2040.BUTTON_A)
+    if display.pressed(badger2040.BUTTON_B):
+        changed = True
+        button(display, badger2040.BUTTON_B)
+    if display.pressed(badger2040.BUTTON_C):
+        changed = True
+        button(display, badger2040.BUTTON_C)
+
+    if changed:
+        display.led(128)
+        render()
+        badger_os.state_save("badges", state)
+        display.led(0)
+        changed = False
+
+    display.halt()

src/badger_os.py

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+"""Keep track of app state in persistent flash storage."""
+
+import os
+import gc
+import time
+import json
+import machine
+import badger2040
+
+def get_battery_level():
+    # Battery measurement
+    vbat_adc = machine.ADC(badger2040.PIN_BATTERY)
+    vref_adc = machine.ADC(badger2040.PIN_1V2_REF)
+    vref_en = machine.Pin(badger2040.PIN_VREF_POWER)
+    vref_en.init(machine.Pin.OUT)
+    vref_en.value(0)
+
+    # Enable the onboard voltage reference
+    vref_en.value(1)
+
+    # Calculate the logic supply voltage, as will be lower that the usual 3.3V when running off low batteries
+    vdd = 1.24 * (65535 / vref_adc.read_u16())
+    vbat = (
+        (vbat_adc.read_u16() / 65535) * 3 * vdd
+    )  # 3 in this is a gain, not rounding of 3.3V
+
+    # Disable the onboard voltage reference
+    vref_en.value(0)
+
+    # Convert the voltage to a level to display onscreen
+    return vbat
+
+
+def get_disk_usage():
+    # f_bfree and f_bavail should be the same?
+    # f_files, f_ffree, f_favail and f_flag are unsupported.
+    f_bsize, f_frsize, f_blocks, f_bfree, _, _, _, _, _, f_namemax = os.statvfs("/")
+
+    f_total_size = f_frsize * f_blocks
+    f_total_free = f_bsize * f_bfree
+    f_total_used = f_total_size - f_total_free
+
+    f_used = 100 / f_total_size * f_total_used
+    f_free = 100 / f_total_size * f_total_free
+
+    return f_total_size, f_used, f_free
+
+
+def state_running():
+    state = {"running": "launcher"}
+    state_load("launcher", state)
+    return state["running"]
+
+
+def state_clear_running():
+    running = state_running()
+    state_modify("launcher", {"running": "launcher"})
+    return running != "launcher"
+
+
+def state_set_running(app):
+    state_modify("launcher", {"running": app})
+
+
+def state_launch():
+    app = state_running()
+    if app is not None and app != "launcher":
+        launch("_" + app)
+
+
+def state_delete(app):
+    try:
+        os.remove("/state/{}.json".format(app))
+    except OSError:
+        pass
+
+
+def state_save(app, data):
+    try:
+        with open("/state/{}.json".format(app), "w") as f:
+            f.write(json.dumps(data))
+            f.flush()
+    except OSError:
+        import os
+        try:
+            os.stat("/state")
+        except OSError:
+            os.mkdir("/state")
+            state_save(app, data)
+
+
+def state_modify(app, data):
+    state = {}
+    state_load(app, state)
+    state.update(data)
+    state_save(app, state)
+
+
+def state_load(app, defaults):
+    try:
+        data = json.loads(open("/state/{}.json".format(app), "r").read())
+        if type(data) is dict:
+            defaults.update(data)
+            return True
+    except (OSError, ValueError):
+        pass
+
+    state_save(app, defaults)
+    return False
+
+
+def launch(file):
+    state_set_running(file[1:])
+
+    gc.collect()
+
+    button_a = machine.Pin(badger2040.BUTTON_A, machine.Pin.IN, machine.Pin.PULL_DOWN)
+    button_c = machine.Pin(badger2040.BUTTON_C, machine.Pin.IN, machine.Pin.PULL_DOWN)
+
+    def quit_to_launcher(pin):
+        if button_a.value() and button_c.value():
+            machine.reset()
+
+    button_a.irq(trigger=machine.Pin.IRQ_RISING, handler=quit_to_launcher)
+    button_c.irq(trigger=machine.Pin.IRQ_RISING, handler=quit_to_launcher)
+
+    try:
+        try:
+            __import__(file[1:])  # Try to import _[file] (drop underscore prefix)
+        except ImportError:
+            __import__(file)      # Failover to importing [_file]
+
+    except ImportError:
+        # If the app doesn't exist, notify the user
+        warning(None, "Could not launch: " + file[1:])
+        time.sleep(4.0)
+    except Exception as e:
+        # If the app throws an error, catch it and display!
+        print(e)
+        warning(None, str(e))
+        time.sleep(4.0)
+
+    # If the app exits or errors, do not relaunch!
+    print("System error, soft reset!")
+    state_clear_running()
+    machine.reset()  # Exit back to launcher
+
+
+# Draw an overlay box with a given message within it
+def warning(display, message, width=badger2040.WIDTH - 40, height=badger2040.HEIGHT - 40, line_spacing=20, text_size=0.6):
+    if display is None:
+        display = badger2040.Badger2040()
+        display.led(128)
+
+    # Draw a light grey background
+    display.pen(12)
+    display.rectangle((badger2040.WIDTH - width) // 2, (badger2040.HEIGHT - height) // 2, width, height)
+
+    # Take the provided message and split it up into
+    # lines that fit within the specified width
+    words = message.split(" ")
+
+    lines = []
+    current_line = ""
+    for word in words:
+        if display.measure_text(current_line + word + " ", text_size) < width:
+            current_line += word + " "
+        else:
+            lines.append(current_line.strip())
+            current_line = word + " "
+    lines.append(current_line.strip())
+
+    display.pen(0)
+    display.thickness(2)
+
+    # Display each line of text from the message, centre-aligned
+    num_lines = len(lines)
+    for i in range(num_lines):
+        length = display.measure_text(lines[i], text_size)
+        current_line = (i * line_spacing) - ((num_lines - 1) * line_spacing) // 2
+        display.text(lines[i], (badger2040.WIDTH - length) // 2, (badger2040.HEIGHT // 2) + current_line, text_size)
+
+    display.update()

src/badges/badge.txt

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+Kirill Timofeev
+Engineering Team
+Census
+oneearedrabbit
+badge.bin

src/fortune_app.py

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+import badger2040
+import os
+import badger_os
+from widgets import draw_window, pprint, ptitle, plength, ppara, button, draw_ui
+from random import random
+
+IMAGE_WIDTH = 96
+IMAGE_HEIGHT = 96
+DELTA = 0
+
+# Check that the fortune directory exists, if not, make it
+try:
+    os.mkdir("fortune")
+except OSError:
+    pass
+
+display = badger2040.Badger2040()
+display.update_speed(badger2040.UPDATE_FAST)
+
+file = "cookie.txt"
+cookies = open("fortune/cookie.txt", "r").read().split("%\n")
+total_cookies = len(cookies)
+
+state = {
+    "running": "badge_app",
+}
+
+IMAGE_WIDTH = 64
+IMAGE_HEIGHT = 64
+
+def render():
+    display.pen(15)
+    display.thickness(1)
+    display.rectangle(12, 42, 222, 84)
+    
+    display.pen(0)
+    display.thickness(1)
+    n = int(random()*total_cookies)
+    print(f"Quote {n}")
+    text = cookies[n].strip().replace("\n", " ").replace("\t\t", " ").replace("\t", " ")
+
+    ppara(display, text, 12, 42, 222, 0)
+    display.update()
+
+def draw_clippy():
+    x = 1
+    y = 21
+    width = 294
+    height = 106
+    draw_window(display, x, y, width, height, " Special ")
+
+    clippy_dat = bytearray(int(IMAGE_WIDTH * IMAGE_HEIGHT / 8))
+    open(f"images/clippy.bin", "rb").readinto(clippy_dat)
+    display.image(clippy_dat, IMAGE_WIDTH, IMAGE_HEIGHT, 212, 56)
+
+    # scrollbars
+    display.pen(0)
+    display.thickness(1)
+    scroll_size = 14
+    title_height = 11
+    display.rectangle(x + width - scroll_size - 1, y + title_height, scroll_size + 1, scroll_size)
+    display.rectangle(x + width - scroll_size - 1, y + height - scroll_size, scroll_size + 1, scroll_size)
+    display.rectangle(x + width - scroll_size - 1, y + title_height + scroll_size, scroll_size + 1, height - title_height)
+
+    display.pen(15)
+    display.rectangle(x + width - scroll_size, y + title_height + 1, scroll_size - 1, scroll_size - 2)
+    display.rectangle(x + width - scroll_size, y + height - scroll_size + 1, scroll_size - 1, scroll_size - 2)
+    display.pen(12)
+    display.rectangle(x + width - scroll_size, y + title_height + scroll_size, scroll_size - 1, height - 2 * scroll_size - title_height)
+
+    # arrows
+    display.pen(0)
+    # top
+    display.line(x + width - scroll_size // 2 - 1, y + title_height + 2, x + width - scroll_size // 2 - 7, y + title_height + 8)
+    display.line(x + width - scroll_size // 2 - 1, y + title_height + 3, x + width - scroll_size // 2 - 6, y + title_height + 8)
+    display.line(x + width - scroll_size // 2 - 1, y + title_height + 2, x + width - scroll_size // 2 + 5, y + title_height + 8)
+    display.line(x + width - scroll_size // 2 - 1, y + title_height + 3, x + width - scroll_size // 2 + 4, y + title_height + 8)
+    display.line(x + width - scroll_size // 2 - 4, y + title_height + 7, x + width - scroll_size // 2 - 4, y + title_height + 12)
+    display.line(x + width - scroll_size // 2 + 2, y + title_height + 7, x + width - scroll_size // 2 + 2, y + title_height + 12)
+    display.line(x + width - scroll_size // 2 - 4, y + title_height + 11, x + width - scroll_size // 2 + 3, y + title_height + 11)
+    
+    # bottom
+    display.line(x + width - scroll_size // 2 - 1, y + height - 3, x + width - scroll_size // 2 - 7, y + height - 9)
+    display.line(x + width - scroll_size // 2 - 1, y + height - 4, x + width - scroll_size // 2 - 6, y + height - 9)
+    display.line(x + width - scroll_size // 2 - 1, y + height - 3, x + width - scroll_size // 2 + 5, y + height - 9)
+    display.line(x + width - scroll_size // 2 - 1, y + height - 4, x + width - scroll_size // 2 + 4, y + height - 9)
+    display.line(x + width - scroll_size // 2 - 4, y + height - 8, x + width - scroll_size // 2 - 4, y + height - 13)
+    display.line(x + width - scroll_size // 2 + 2, y + height - 8, x + width - scroll_size // 2 + 2, y + height - 13)
+    display.line(x + width - scroll_size // 2 - 4, y + height - 12, x + width - scroll_size // 2 + 3, y + height - 12)
+
+def draw_elements():
+    display.pen(15)
+    display.clear()
+
+    draw_ui(display, "Special")
+    
+    draw_clippy()
+
+changed = not badger2040.woken_by_button()
+
+draw_elements()
+
+while True:
+    if display.pressed(badger2040.BUTTON_A):
+        changed = True
+        button(display, badger2040.BUTTON_A)
+    if display.pressed(badger2040.BUTTON_B):
+        changed = True
+        button(display, badger2040.BUTTON_B)
+    if display.pressed(badger2040.BUTTON_C) or display.pressed(badger2040.BUTTON_UP) or display.pressed(badger2040.BUTTON_DOWN):
+        changed = True
+#         button(display, badger2040.BUTTON_C)
+        
+    if changed:
+        display.led(128)
+        render()
+        badger_os.state_save("fortune", state)
+        display.led(0)
+        changed = False
+
+    display.halt()

src/images/background.bin

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src/launcher.py

@@ -0,0 +1,86 @@
+import badger2040
+import badger_os
+from widgets import draw_window, pprint, button, wait_for_user_to_release_buttons, draw_ui
+
+# Reduce clock speed to 48MHz
+badger2040.system_speed(badger2040.SYSTEM_NORMAL)
+
+changed = False
+exited_to_launcher = False
+woken_by_button = badger2040.woken_by_button()  # Must be done before we clear_pressed_to_wake
+
+if badger2040.pressed_to_wake(badger2040.BUTTON_A) and badger2040.pressed_to_wake(badger2040.BUTTON_C):
+    # Pressing A and C together at start quits app
+    exited_to_launcher = badger_os.state_clear_running()
+else:
+    # Otherwise restore previously running app
+    badger_os.state_launch()
+
+display = badger2040.Badger2040()
+display.led(128)
+
+state = {
+    "running": "launcher",
+}
+
+badger_os.state_load("launcher", state)
+
+def draw_about():
+    x = 78
+    y = 39
+    width = 144
+    height = 63
+    draw_window(display, x, y, width, height, " Welcome ")
+        
+    # logo
+    image = bytearray(int(32 * 32 / 8))
+    open("images/{}".format("census.bin"), "r").readinto(image)
+    display.image(image, 32, 32, 86, 56)    
+
+    pprint(display, "Engineering", 125, 56, 0)
+    pprint(display, "Offsite", 125, 66, 0)
+    pprint(display, "Brooklyn", 125, 76, 0)
+    pprint(display, "2022", 125, 86, 0)
+
+def render():
+    display.pen(15)
+    display.clear()
+    
+    draw_ui(display, "About")
+    
+    draw_about()
+        
+    display.update()
+    
+if exited_to_launcher or not woken_by_button:
+    wait_for_user_to_release_buttons(display)
+    display.update_speed(badger2040.UPDATE_NORMAL)
+    render()
+    display.led(0)
+
+display.update_speed(badger2040.UPDATE_NORMAL)
+
+# Save power, do NOT render screen every time
+while True:        
+    if display.pressed(badger2040.BUTTON_A):
+        changed = True
+        button(display, badger2040.BUTTON_A)
+    if display.pressed(badger2040.BUTTON_B):
+        changed = True
+        button(display, badger2040.BUTTON_B)
+    if display.pressed(badger2040.BUTTON_C):
+        changed = True
+        button(display, badger2040.BUTTON_C)
+
+#     if display.pressed(badger2040.BUTTON_UP):
+#         button(display, badger2040.BUTTON_UP)
+#     if display.pressed(badger2040.BUTTON_DOWN):
+#         button(display, badger2040.BUTTON_DOWN)
+
+    if changed:
+        badger_os.state_save("launcher", state)
+        changed = False
+        
+    # Halt the Badger to save power, it will wake up if any of the front buttons are pressed
+    display.halt()
+

src/main.py

@@ -0,0 +1 @@
+import launcher

src/qr_app.py

@@ -0,0 +1,134 @@
+import badger2040
+import qrcode
+import os
+import badger_os
+from widgets import draw_window, pprint, ptitle, plength, button, draw_ui
+
+# Check that the qrcodes directory exists, if not, make it
+try:
+    os.mkdir("qrcodes")
+except OSError:
+    pass
+
+# Load all available QR Code Files
+try:
+    CODES = [f for f in os.listdir("/qrcodes") if f.endswith(".txt")]
+    TOTAL_CODES = len(CODES)
+except OSError:
+    pass
+
+
+print(f'There are {TOTAL_CODES} QR Codes available:')
+for codename in CODES:
+    print(f'File: {codename}')
+
+display = badger2040.Badger2040()
+
+code = qrcode.QRCode()
+
+
+state = {
+    "running": "qr_app",
+    "current_qr": 0
+}
+
+
+def measure_qr_code(size, code):
+    w, h = code.get_size()
+    module_size = int(size / w)
+    return module_size * w, module_size
+
+
+def draw_qr_code(ox, oy, size, code):
+    size, module_size = measure_qr_code(size, code)
+    display.pen(15)
+    display.rectangle(ox, oy, size, size)
+    display.pen(0)
+    for x in range(size):
+        for y in range(size):
+            if code.get_module(x, y):
+                display.rectangle(ox + x * module_size, oy + y * module_size, module_size, module_size)
+
+
+def draw_qr_file(n):
+    draw_window(display, 6, 26, 282, 94, " About us ")
+
+    file = CODES[n]
+    codetext = open("qrcodes/{}".format(file), "r")
+
+    lines = codetext.read().strip().split("\n")
+    code_text = lines.pop(0)
+    title_text = lines.pop(0)
+    detail_text = lines
+
+    display.pen(0)
+
+    code.set_text(code_text)
+    size, _ = measure_qr_code(128, code)
+    draw_qr_code(10, 41, 80, code)
+
+    left = 96
+
+    display.thickness(2)
+    ptitle(display, title_text, left, 40, 0)
+    display.thickness(1)
+
+    top = 56
+    for line in detail_text:
+        pprint(display, line, left, top, 0)
+        top += 10
+
+    if TOTAL_CODES > 1:
+        for i in range(TOTAL_CODES):
+            x = 286
+            y = int((128 / 2) - (TOTAL_CODES * 10 / 2) + (i * 10))
+            display.pen(0)
+            display.rectangle(x, y, 8, 8)
+            if state["current_qr"] != i:
+                display.pen(15)
+                display.rectangle(x + 1, y + 1, 6, 6)
+
+def render():
+    display.pen(15)
+    display.clear()
+
+    draw_ui(display, "QR")
+    
+    draw_qr_file(state["current_qr"])
+    
+    display.update()
+
+badger_os.state_load("qrcodes", state)
+changed = not badger2040.woken_by_button()
+
+while True:
+    if TOTAL_CODES > 1:
+        if display.pressed(badger2040.BUTTON_UP):
+            if state["current_qr"] > 0:
+                state["current_qr"] -= 1
+                changed = True
+
+        if display.pressed(badger2040.BUTTON_DOWN):
+            if state["current_qr"] < TOTAL_CODES - 1:
+                state["current_qr"] += 1
+                changed = True
+
+    if display.pressed(badger2040.BUTTON_A):
+        changed = True
+        button(display, badger2040.BUTTON_A)
+    if display.pressed(badger2040.BUTTON_B):
+        changed = True
+#         button(display, badger2040.BUTTON_B)
+    if display.pressed(badger2040.BUTTON_C):
+        changed = True
+        button(display, badger2040.BUTTON_C)
+    
+    if changed:
+        display.led(128)
+        render()
+        badger_os.state_save("qrcodes", state)
+        display.led(0)
+        changed = False
+
+    # Halt the Badger to save power, it will wake up if any of the front buttons are pressed
+    display.halt()

src/qrcodes/qrcode.txt

@@ -0,0 +1,8 @@
+https://getcensus.com/
+Census
+* the leading reverse ETL
+* no more CSV files
+* sync data in real-time
+
+Scan this code to learn
+more about Census.

src/widgets.py

@@ -0,0 +1,321 @@
+import badger_os
+import badger2040
+import time
+import gc
+from badger2040 import WIDTH
+
+# for e.g. 2xAAA batteries, try max 3.4 min 3.0
+MAX_BATTERY_VOLTAGE = 3.4
+MIN_BATTERY_VOLTAGE = 3.0
+
+font_table = {
+  ' ': (0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00 ), # 0x20    32    
+  '!': (0x00,0x00,0x03,0x03,0x03,0x03,0x00,0x03,0x00,0x00 ), # 0x21    33    
+  '"': (0x00,0x00,0x1B,0x1B,0x12,0x00,0x00,0x00,0x00,0x00 ), # 0x22    34    
+  '#': (0x00,0x00,0x36,0x7F,0x36,0x36,0x7F,0x36,0x00,0x00 ), # 0x23    35    
+  '$': (0x00,0x0C,0x3E,0x0F,0x1E,0x3C,0x3F,0x1E,0x0C,0x00 ), # 0x24    36    
+  '%': (0x00,0x00,0x63,0x33,0x18,0x0C,0x66,0x63,0x00,0x00 ), # 0x25    37    
+  '&': (0x00,0x00,0x1E,0x33,0x1E,0x3F,0x1B,0x3E,0x00,0x00 ), # 0x26    38    
+  "'": (0x00,0x00,0x03,0x03,0x02,0x00,0x00,0x00,0x00,0x00 ), # 0x27    39    
+  '(': (0x00,0x06,0x03,0x03,0x03,0x03,0x03,0x03,0x06,0x00 ), # 0x28    40    
+  ')': (0x00,0x03,0x06,0x06,0x06,0x06,0x06,0x06,0x03,0x00 ), # 0x29    41    
+  '*': (0x00,0x00,0x00,0x33,0x1E,0x1E,0x33,0x00,0x00,0x00 ), # 0x2A    42    
+  '+': (0x00,0x00,0x0C,0x0C,0x3F,0x0C,0x0C,0x00,0x00,0x00 ), # 0x2B    43    
+  ',': (0x00,0x00,0x00,0x00,0x00,0x00,0x03,0x03,0x02,0x00 ), # 0x2C    44    
+  '-': (0x00,0x00,0x00,0x00,0x3F,0x00,0x00,0x00,0x00,0x00 ), # 0x2D    45    
+  '.': (0x00,0x00,0x00,0x00,0x00,0x00,0x03,0x03,0x00,0x00 ), # 0x2E    46    
+  '/': (0x00,0x40,0x60,0x30,0x18,0x0C,0x06,0x03,0x01,0x00 ), # 0x2F    47    
+  '0': (0x00,0x00,0x1E,0x33,0x33,0x33,0x33,0x1E,0x00,0x00 ), # 0x30    48    
+  '1': (0x00,0x00,0x06,0x07,0x06,0x06,0x06,0x0F,0x00,0x00 ), # 0x31    49    
+  '2': (0x00,0x00,0x1E,0x33,0x30,0x1E,0x03,0x3F,0x00,0x00 ), # 0x32    50    
+  '3': (0x00,0x00,0x1E,0x33,0x18,0x30,0x33,0x1E,0x00,0x00 ), # 0x33    51    
+  '4': (0x00,0x00,0x18,0x1C,0x1E,0x1B,0x3F,0x18,0x00,0x00 ), # 0x34    52    
+  '5': (0x00,0x00,0x3F,0x03,0x1F,0x30,0x33,0x1E,0x00,0x00 ), # 0x35    53    
+  '6': (0x00,0x00,0x1E,0x03,0x1F,0x33,0x33,0x1E,0x00,0x00 ), # 0x36    54    
+  '7': (0x00,0x00,0x3F,0x30,0x18,0x0C,0x0C,0x0C,0x00,0x00 ), # 0x37    55    
+  '8': (0x00,0x00,0x1E,0x33,0x1E,0x33,0x33,0x1E,0x00,0x00 ), # 0x38    56    
+  '9': (0x00,0x00,0x1E,0x33,0x33,0x3E,0x30,0x1E,0x00,0x00 ), # 0x39    57    
+  ':': (0x00,0x00,0x00,0x03,0x03,0x00,0x03,0x03,0x00,0x00 ), # 0x3A    58    
+  ';': (0x00,0x00,0x00,0x03,0x03,0x00,0x03,0x03,0x02,0x00 ), # 0x3B    59    
+  '<': (0x00,0x18,0x0C,0x06,0x03,0x06,0x0C,0x18,0x00,0x00 ), # 0x3C    60    
+  '=': (0x00,0x00,0x00,0x3F,0x00,0x3F,0x00,0x00,0x00,0x00 ), # 0x3D    61    
+  '>': (0x00,0x03,0x06,0x0C,0x18,0x0C,0x06,0x03,0x00,0x00 ), # 0x3E    62    
+  '?': (0x00,0x00,0x1E,0x33,0x18,0x0C,0x00,0x0C,0x00,0x00 ), # 0x3F    63    
+  '@': (0x7E,0xC3,0x3B,0xEF,0xEF,0xFB,0xC3,0x7E,0x00,0x00 ), # 0x40    64    
+  'A': (0x00,0x00,0x1E,0x33,0x33,0x3F,0x33,0x33,0x00,0x00 ), # 0x41    65    
+  'B': (0x00,0x00,0x1F,0x33,0x1F,0x33,0x33,0x1F,0x00,0x00 ), # 0x42    66    
+  'C': (0x00,0x00,0x1E,0x33,0x03,0x03,0x33,0x1E,0x00,0x00 ), # 0x43    67    
+  'D': (0x00,0x00,0x1F,0x33,0x33,0x33,0x33,0x1F,0x00,0x00 ), # 0x44    68    
+  'E': (0x00,0x00,0x3F,0x03,0x0F,0x03,0x03,0x3F,0x00,0x00 ), # 0x45    69    
+  'F': (0x00,0x00,0x3F,0x03,0x0F,0x03,0x03,0x03,0x00,0x00 ), # 0x46    70    
+  'G': (0x00,0x00,0x1E,0x33,0x03,0x3B,0x33,0x1E,0x00,0x00 ), # 0x47    71    
+  'H': (0x00,0x00,0x33,0x33,0x3F,0x33,0x33,0x33,0x00,0x00 ), # 0x48    72    
+  'I': (0x00,0x00,0x0F,0x06,0x06,0x06,0x06,0x0F,0x00,0x00 ), # 0x49    73    
+  'J': (0x00,0x00,0x30,0x30,0x30,0x30,0x33,0x1E,0x00,0x00 ), # 0x4A    74    
+  'K': (0x00,0x00,0x33,0x1B,0x0F,0x0F,0x1B,0x33,0x00,0x00 ), # 0x4B    75    
+  'L': (0x00,0x00,0x03,0x03,0x03,0x03,0x03,0x3F,0x00,0x00 ), # 0x4C    76    
+  'M': (0x00,0x00,0xC3,0xE7,0xFF,0xDB,0xC3,0xC3,0x00,0x00 ), # 0x4D    77    
+  'N': (0x00,0x00,0x33,0x37,0x3F,0x3B,0x33,0x33,0x00,0x00 ), # 0x4E    78    
+  'O': (0x00,0x00,0x1E,0x33,0x33,0x33,0x33,0x1E,0x00,0x00 ), # 0x4F    79    
+  'P': (0x00,0x00,0x1F,0x33,0x33,0x1F,0x03,0x03,0x00,0x00 ), # 0x50    80    
+  'Q': (0x00,0x00,0x1E,0x33,0x33,0x33,0x1B,0x36,0x00,0x00 ), # 0x51    81    
+  'R': (0x00,0x00,0x1F,0x33,0x33,0x1F,0x1B,0x33,0x00,0x00 ), # 0x52    82    
+  'S': (0x00,0x00,0x1E,0x03,0x1E,0x30,0x33,0x1E,0x00,0x00 ), # 0x53    83    
+  'T': (0x00,0x00,0x3F,0x0C,0x0C,0x0C,0x0C,0x0C,0x00,0x00 ), # 0x54    84    
+  'U': (0x00,0x00,0x33,0x33,0x33,0x33,0x33,0x1E,0x00,0x00 ), # 0x55    85    
+  'V': (0x00,0x00,0x33,0x33,0x33,0x33,0x1E,0x0C,0x00,0x00 ), # 0x56    86    
+  'W': (0x00,0x00,0xC3,0xDB,0xDB,0xDB,0xDB,0x7E,0x00,0x00 ), # 0x57    87    
+  'X': (0x00,0x00,0x33,0x1E,0x0C,0x0C,0x1E,0x33,0x00,0x00 ), # 0x58    88    
+  'Y': (0x00,0x00,0x33,0x33,0x33,0x1E,0x0C,0x0C,0x00,0x00 ), # 0x59    89    
+  'Z': (0x00,0x00,0x3F,0x38,0x1C,0x0E,0x07,0x3F,0x00,0x00 ), # 0x5A    90    
+  '[': (0x00,0x0F,0x03,0x03,0x03,0x03,0x03,0x03,0x0F,0x00 ), # 0x5B    91    
+  '\\': (0x00,0x01,0x03,0x06,0x0C,0x18,0x30,0x60,0x40,0x00 ), # 0x5C    92    
+  ']': (0x00,0x0F,0x0C,0x0C,0x0C,0x0C,0x0C,0x0C,0x0F,0x00 ), # 0x5D    93    
+  '^': (0x00,0x00,0x0C,0x1E,0x33,0x00,0x00,0x00,0x00,0x00 ), # 0x5E    94    
+  '_': (0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x3F,0x00 ), # 0x5F    95    
+  '`': (0x00,0x00,0x03,0x03,0x02,0x00,0x00,0x00,0x00,0x00 ), # 0x60    96    
+  'a': (0x00,0x00,0x00,0x1E,0x30,0x3E,0x33,0x3E,0x00,0x00 ), # 0x61    97    
+  'b': (0x00,0x00,0x03,0x1F,0x33,0x33,0x33,0x1F,0x00,0x00 ), # 0x62    98    
+  'c': (0x00,0x00,0x00,0x1E,0x33,0x03,0x33,0x1E,0x00,0x00 ), # 0x63    99    
+  'd': (0x00,0x00,0x30,0x3E,0x33,0x33,0x33,0x3E,0x00,0x00 ), # 0x64    100   
+  'e': (0x00,0x00,0x00,0x1E,0x33,0x1F,0x03,0x1E,0x00,0x00 ), # 0x65    101   
+  'f': (0x00,0x00,0x0E,0x03,0x0F,0x03,0x03,0x03,0x00,0x00 ), # 0x66    102   
+  'g': (0x00,0x00,0x00,0x3E,0x33,0x33,0x3E,0x30,0x1E,0x00 ), # 0x67    103   
+  'h': (0x00,0x00,0x03,0x1F,0x33,0x33,0x33,0x33,0x00,0x00 ), # 0x68    104   
+  'i': (0x00,0x00,0x03,0x00,0x03,0x03,0x03,0x03,0x00,0x00 ), # 0x69    105   
+  'j': (0x00,0x00,0x06,0x00,0x06,0x06,0x06,0x06,0x03,0x00 ), # 0x6A    106   
+  'k': (0x00,0x00,0x03,0x33,0x1B,0x0F,0x1B,0x33,0x00,0x00 ), # 0x6B    107   
+  'l': (0x00,0x00,0x03,0x03,0x03,0x03,0x03,0x06,0x00,0x00 ), # 0x6C    108   
+  'm': (0x00,0x00,0x00,0x7F,0xDB,0xDB,0xDB,0xDB,0x00,0x00 ), # 0x6D    109   
+  'n': (0x00,0x00,0x00,0x1F,0x33,0x33,0x33,0x33,0x00,0x00 ), # 0x6E    110   
+  'o': (0x00,0x00,0x00,0x1E,0x33,0x33,0x33,0x1E,0x00,0x00 ), # 0x6F    111   
+  'p': (0x00,0x00,0x00,0x1F,0x33,0x33,0x33,0x1F,0x03,0x00 ), # 0x70    112   
+  'q': (0x00,0x00,0x00,0x3E,0x33,0x33,0x33,0x3E,0x30,0x00 ), # 0x71    113   
+  'r': (0x00,0x00,0x00,0x0E,0x03,0x03,0x03,0x03,0x00,0x00 ), # 0x72    114   
+  's': (0x00,0x00,0x00,0x1E,0x03,0x1E,0x30,0x1F,0x00,0x00 ), # 0x73    115   
+  't': (0x00,0x00,0x06,0x0F,0x06,0x06,0x06,0x0C,0x00,0x00 ), # 0x74    116   
+  'u': (0x00,0x00,0x00,0x33,0x33,0x33,0x33,0x1E,0x00,0x00 ), # 0x75    117   
+  'v': (0x00,0x00,0x00,0x33,0x33,0x33,0x1E,0x0C,0x00,0x00 ), # 0x76    118   
+  'w': (0x00,0x00,0x00,0xC3,0xDB,0xDB,0xDB,0x7E,0x00,0x00 ), # 0x77    119   
+  'x': (0x00,0x00,0x00,0x33,0x1E,0x0C,0x1E,0x33,0x00,0x00 ), # 0x78    120   
+  'y': (0x00,0x00,0x00,0x33,0x33,0x33,0x3E,0x30,0x1E,0x00 ), # 0x79    121   
+  'z': (0x00,0x00,0x00,0x3F,0x18,0x0C,0x06,0x3F,0x00,0x00 ), # 0x7A    122   
+  '(': (0x00,0x0C,0x06,0x06,0x03,0x03,0x06,0x06,0x0C,0x00 ), # 0x7B    123   
+  '|': (0x00,0x03,0x03,0x03,0x03,0x03,0x03,0x03,0x03,0x00 ), # 0x7C    124   
+  ')': (0x00,0x03,0x06,0x06,0x0C,0x0C,0x06,0x06,0x03,0x00 ), # 0x7D    125   
+  '~': (0x00,0x00,0x00,0x00,0x6E,0x3B,0x00,0x00,0x00,0x00 )  # 0x7E    126   
+}
+
+def reverse_mask(x):
+    x = ((x & 0x55) << 1) | ((x & 0xAA) >> 1)
+    x = ((x & 0x33) << 2) | ((x & 0xCC) >> 2)
+    x = ((x & 0x0F) << 4) | ((x & 0xF0) >> 4)
+    return x
+
+def get_char(c):
+    try:
+        char = font_table[c]
+    except KeyError:
+        print(f"Unrecognized char: {c}")
+        char = font_table[" "]
+    return char
+            
+def plength(para):
+    # This could be precalculated, but I am lazy
+    total = 0
+    for c in para:
+        char = get_char(c)
+        width = sum(1 for i in [sum(1 for i in [x & mask for x in char] if i > 0) for mask in [128, 64, 32, 16, 8, 4, 2, 1]] if i > 0)
+        total += 5 if width == 0 else width + 1
+    return total
+
+def pprint(display, para, x, y, col):
+    offset = 0
+    display.thickness(1)
+
+    if col == 0:
+        display.pen(15)
+    else:
+        display.pen(0)
+
+    for c in para:
+        if col == 1:
+            char = [~x & 0xFF for x in get_char(c)]
+        else:
+            char = get_char(c)
+            
+        display.image(bytearray([reverse_mask(x) for x in char]), 8, 10, x + offset, y)
+        display.rectangle(x + offset - 1, y, 1, 10)
+
+        offset += plength(c)
+        
+def ppara(display, para, x, y, width, col):
+    line = ""
+    base_x = x
+    length = 0
+    for c in para:
+        clength = plength(c)
+        if clength + length > width:
+            pprint(display, line, x, y, col)
+            y += 10
+            length = 0
+            x = base_x
+            line = ""
+
+        length += clength
+        line += c
+
+    pprint(display, line, x, y, col)
+
+def ptitle(display, para, x, y, col):
+    pprint(display, para, x, y, 0)
+    
+    display.thickness(2)
+    display.pen(0)
+    display.line(x, y + 10, x + plength(para), y + 10)
+
+def draw_background(display):
+    display.pen(0)
+    display.thickness(1)
+
+    for y in range(11, 63):
+        for x in range(1, 147, 2):
+            display.rectangle(x * 2 + (2 if y % 2 == 0 else 0), y * 2, 2, 2)
+
+#     image = bytearray(int(296 * 128 / 8))
+#     open("images/{}".format("background.bin"), "r").readinto(image)
+#     display.image(image, 296, 128, 0, 0)
+
+def draw_menu(display, selected):
+    menu = "Badge    QR    Special    About"
+
+    # logo
+    display.pen(0)
+    display.thickness(1)
+    
+    x = 12
+    y = 6
+    display.line(x + 2, y, x + 8, y)
+    display.line(x + 6, y + 1, x + 9, y + 1)
+    display.line(x + 1, y + 2, x + 10, y + 2)
+    display.line(x + 5, y + 3, x + 10, y + 3)
+    display.line(x, y + 4, x + 10, y + 4)
+    display.line(x + 5, y + 5, x + 10, y + 5)
+    display.line(x + 1, y + 6, x + 10, y + 6)
+    display.line(x + 6, y + 7, x + 9, y + 7)
+    display.line(x + 2, y + 8, x + 8, y + 8)
+
+    x = 40
+    pprint(display, menu, x, 6, 0)
+    
+    # selected
+    display.pen(0)
+    offset = plength(menu.split(selected)[0])
+    display.rectangle(x + offset - 7, 3, plength(selected) + 13, 17)
+    pprint(display, selected, x + offset, 6, 1)
+   
+    display.pen(0)
+    display.thickness(2)
+    display.line(1, 21, 295, 21)
+    
+def draw_border(display):
+    display.pen(0)
+    display.thickness(2)
+    
+    display.line(1,   1,   295, 1)
+    display.line(1,   1,   1,   127)
+    display.line(1,   127, 295, 127)
+    display.line(295, 1,   295, 127)
+    display.image(bytearray((0xff, 0xff, 0xfc, 0xf8, 0xf0, 0xe0, 0xc0, 0xc0)), 8, 8, 0, 0)
+    display.image(bytearray((0xff, 0xff, 0x3f, 0x1f, 0x0f, 0x07, 0x03, 0x03)), 8, 8, 288, 0)
+    display.image(bytearray((0x03, 0x03, 0x07, 0x0f, 0x1f, 0x3f, 0xff, 0xff)), 8, 8, 288, 120)
+    display.image(bytearray((0xc0, 0xc0, 0xe0, 0xf0, 0xf8, 0xfc, 0xff, 0xff)), 8, 8, 0, 120)
+
+def map_value(input, in_min, in_max, out_min, out_max):
+    return (((input - in_min) * (out_max - out_min)) / (in_max - in_min)) + out_min
+
+def draw_battery(display, x, y):
+    vbat = badger_os.get_battery_level()
+    level = int(map_value(vbat, MIN_BATTERY_VOLTAGE, MAX_BATTERY_VOLTAGE, 0, 4))
+    
+    # Outline
+    display.thickness(1)
+    display.pen(15)
+    display.rectangle(x, y, 19, 10)
+    
+    # Terminal
+    display.rectangle(x + 19, y + 3, 2, 4)
+    display.pen(0)
+    display.rectangle(x + 1, y + 1, 17, 8)
+    if level < 1:
+        display.pen(0)
+        display.line(x + 3, y, x + 3 + 10, y + 10)
+        display.line(x + 3 + 1, y, x + 3 + 11, y + 10)
+        display.pen(15)
+        display.line(x + 2 + 2, y - 1, x + 4 + 12, y + 11)
+        display.line(x + 2 + 3, y - 1, x + 4 + 13, y + 11)
+        return
+        
+    # Battery Bars
+    display.pen(15)
+    for i in range(4):
+        if level / 4 > (1.0 * i) / 4:
+            display.rectangle(i * 4 + x + 2, y + 2, 3, 6)
+
+def draw_window(display, x, y, width, height, title):
+    display.thickness(1)
+    
+    # borders
+    display.pen(15)
+    display.rectangle(x, y, width, height)
+    
+    display.pen(0)
+    display.line(x, y, x + width - 1, y)
+    display.line(x, y, x, y + height - 1)
+    display.line(x, y + height - 1, x + width - 1, y + height - 1)
+    display.line(x + width - 1, y, x + width - 1, y + height - 1)
+    
+    # shadow
+    display.line(x, y + height, x + width + 1, y + height)
+    display.line(x + width, y, x + width, y + height + 1)
+    display.line(x + 1, y + height + 1, x + width + 1, y + height + 1)
+    display.line(x + width + 1, y + 1, x + width + 1, y + height + 1)
+
+    # title
+    display.line(x + 4, y + 3, x + width - 4, y + 3)
+    display.line(x + 4, y + 5, x + width - 4, y + 5)
+    display.line(x + 4, y + 7, x + width - 4, y + 7)
+
+    display.line(x, y + 11, x + width, y + 11)
+    display.line(x, y + 11, x + width, y + 11)
+    
+    pprint(display, title, (x + x + width - plength(title)) // 2, y + 1, 0)        
+    
+def wait_for_user_to_release_buttons(display):
+    pr = display.pressed
+    while pr(badger2040.BUTTON_A) or pr(badger2040.BUTTON_B) or pr(badger2040.BUTTON_C) or pr(badger2040.BUTTON_UP) or pr(badger2040.BUTTON_DOWN):
+        time.sleep(0.01)
+
+def launch_app(display, file):
+    wait_for_user_to_release_buttons(display)
+
+    for k in locals().keys():
+        if k not in ("gc", "file", "badger_os"):
+            del locals()[k]
+    gc.collect()
+    badger_os.launch(file)
+
+def button(display, pin):
+    if not display.pressed(badger2040.BUTTON_USER):  # User button is NOT held down
+        if pin == badger2040.BUTTON_A:
+            launch_app(display, "_badge_app")
+        if pin == badger2040.BUTTON_B:
+            launch_app(display, "_qr_app")
+        if pin == badger2040.BUTTON_C:
+            launch_app(display, "_fortune_app")
+            
+def draw_ui(display, selected):
+    draw_border(display)
+    draw_menu(display, selected)
+    draw_background(display)
+    draw_battery(display, WIDTH - 28, 6)