Patrons please use discount code in order !!!!

Chip crisis forced me to completely redesign Armachat, also the arrival of the new modern Raspberry PICO with direct Python support, which will allow easier DIY assembly and also much easier software development, large internal memory will allow not only storing messages but also maps for GPS or sensory data in the future. As you can see the material list is reduced to only 8 lines. There are 2 modules and 3 SMD components. Raspberry Pi Pico comes with an indestructible bootloader in ROM, it cannot be destroyed or malfunctioned. Once connected to a PC, Armachat works as a USB drive, it is possible to edit program files in any text editor (python friendly is recommended) and immediately see the changes, it will allow a realy very fast development

Assembly guide github.com/Kayto/Armachat-Compact-Documentation

How to get FREE BOARDS

• order boards
• create assembly tutorial on https://www.instructables.com/
• Write my link .... I refund your order to your paypal

     Pictures in gallery are only for reference !!!
  

THIS VERSION IS UNDER INTENSIVE DEVELOPMENT

          All assembled units I have now reserved for my several-year supporters
     thanks for understanding

Features:

• Based on Raspbery Pi PICO
• 2" IPS LCD 320x240
• 30 buttons QWERTY keyboard with optional backlight
• 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
• optional 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

Sale options:

• bare main board + GOLD front panel hole for 2" display no components included
• Assembled + GOLD front panel Soldered keyboard, RPI PICO, 2" 320x240 display, RFM95 radio module without battery (18650 battery holder) back PCB cover

  I have no plans to supply kits, or components, Only bare boards or Assembled units.
  

Required components

Optional components

SOURCE CODE for CircuitPython

• Raspberry Pi PICO Circuitpython
• Main code and libraries

CODE EXAMPLES and DEFINITIONS

 #define TFT_CS        21
 #define TFT_RST       RUN
 #define TFT_DC        16
 #define TFT_MOSI      19
 #define TFT_SCLK      18
 #define TFT_BACKLIGHT 20 //Display backlight pin 
 #define speaker       0  
 #define SDcard_CS     13

 byte colPins[COLS] = {1, 2, 3, 4, 5,14}; //connect to the column pinouts of the keypad extra cursor keys 14
 byte rowPins[ROWS] = {6, 9, 15, 8, 7, 22}; //row pinouts of the keypad
 char directKeys[ROWS][COLS] = {
  {KEY_RETURN, ' ', 'm', 'n', 'b',},
  {KEY_DELETE, 'l', 'k', 'j', 'h',},
  {'p', 'o', 'i', 'u', 'y',},
  {KEY_SHIFT, 'z', 'x', 'c', 'v',},
  {'a', 's', 'd', 'f', 'g',},
  {'q', 'w', 'e', 'r', 't',}  
 };

Some important pages about ARMACHAT and places with fresh news !

• My youtube - Super fresh NEWS
• facebook.com/groups/armachat - Facebook group
• patreon.com/bobricius - You can help with any amount to keep my alive
• twitter.com/bobricius - Follow fresh news
• instagram.com/bobricius76/ - Follow fresh pictures

Distance (Max power, Spread Factor 12)

• 700m unit on garden desk
• 1500m unit in window, about 4m above ground
• 4300m unit in attic window, 10m above ground - not reliable