Features:

  • Based on Raspbery Pi PICO
  • 2" IPS LCD 320x240
  • 30 buttons QWERTY keyboard with optional blacklight
  • RFM95 LoRa radio module
  • Main software in circuitpython, fully open and transparent
  • battery or battery charging is under development, not supported now, It will be connected to the main board as a separate backplane
  • Encryption AES256
  • USB-C power supply
  • 79mm x 69mm x 8-12mm dimensions

Supported displays:

  • 12pin st7789 IPS 240x240 via flex cable 1.3" inch
  • 12pin st7789 IPS 240x240 via flex cable 1.54" inch
  • 12pin st7789 IPS 320x240 via flex cable 2" inch
  • 8pin st7789 IPS 240x240 via header
  • any display with popular china module pinout GND,VCC,SCK,DAT,RES,DC,CS,BACKLIT
  • BEST DISPLAY 2.0" IPS screen 12PIN 320x240 ST7789V display window is adjusted specially for this display

Required components

Componentpcsdescriptionnote
Raspberry PICO1main green board-
RFM95W1radio module with frequency for your country-
2.0" IPS screen112PIN 320x240 ST7789V-
DTS63K30tactile switch 7mm height, 1NOr another 1N force is very comfortable to press
BSS1231Transistordisplay backlight
10R 06031Resistordisplay backlight
4k71Resistordisplay backlight
LPT1109DS1PIEZOPIEZO sound beeper

Optional components

Componentpcsdescriptionnote
JS202011CQN C&K or MSS-2235 NINIGI1Side SwitchFor power off (Armachat work without)
BSS1231Transistorkeyboard backlight
100R 06031Resistorkeyboard backlight
4k71Resistorkeyboard backlight
led 080230Side LEDkeyboard backlight

SOURCE CODE for CircuitPython

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