V1.1 update: You don't need to calibrate touch positions anymore. Not even compile the sources.
See github for details!!

Cheap communication device with on-screen touch keyboard much easier to build then hardware qwerty.
There is 10 lines of text on the screen, all messages are logged to SD.
Single message is limited to 53 symbols just to fit one line of the screen.

Hardware connections:
TFT, SD, LoRa and Touch SPI:
SCK - PA5
MISO - PA6
MOSI - PA7
Other:
TFT reset - reset
TFT LED - PA2 (30sec timeout)
TFT SS - PA4
SD SS - PA3
Touch SS - PB11
TFT DC - PA1
Touch irq - PB10
LoRa irq - PB1
LoRa reset - PB0
LoRa SS - PA0
i2c:
DS3231 SDA - PB7
DS3231 SCL - PB6

https://github.com/Airrr17/LoRa_messenger