Devlog 1 - NotGoingToBeLateToSchool

what it is: xiao esp32c3, 3x3 keypad on top of the case, 2.25in st7789
on the front on jumpers. ambient display by day, alarm by night.

features

• auto rotates through weather / hackatime hours / now playing / world clocks
• pulls real iphone notifications over ble with ancs
• at alarm time it pairs as a ble media remote and tells my phone to hit play
  on spotify, so i wake up to music not a piezo
• 3 snoozes max. on the 3rd you type a code on the keypad to kill it
• screen ramps brighter as the alarm approaches, fake sunrise

the board (schematic + pcb done and routed)

• 69.5 x 97mm, 2 layers, 25 footprints
• 284 tracks, 22 vias, about 2.1m of copper
• keys on the top side at 19.05 pitch, everything else underneath so the case
  only shows keycaps
• xiao at the back with usb-c out the rear, display header at the front edge
  so the jumper run is short
• diodes tucked into the gaps between key rows

stuff i got wrong

• thought i could make it a bluetooth speaker. c3 is ble only, no bluetooth
  classic, so a2dp is impossible. hence the ble remote workaround
• spent ages thinking the extra pins on top of the xiao were spare. they’re
  jtag pads for gpio i was already using
• so bl goes to gnd and rst to 3v3 like the docs say. no hardware brightness,
  sunrise ramp is a dimming palette instead
• wanted a rotary encoder, isn’t in the kit. went 3x3 matrix instead, 9 keys
  off 6 pins using diodes already in the box

next: case cad, then firmware