Lilygo ttgo t5

the board

TTGO T5 V2.3 Wireless WiFi Basic Wireless Module ESP-32 esp32 2.13 Inch ePaper Display Development board.

• SKU: H239, github
• Model DEPG0213BN
• ESP32-D0WDQ6 (revision 1)
• WiFi, BT, Dual Core, 240MHz, Crystal is 40MHz

esptool.py --port /dev/ttyUSB1 chip_id tells us:

Chip is ESP32-D0WDQ6 (revision 1)
Features: WiFi, BT, Dual Core, 240MHz

I downloaded the latest stable generic micropython ESP-IDF v4.x firmware. Flash it by: (assuming board is on ttyUSB1)

esptool.py --chip esp32 --port /dev/ttyUSB1 erase_flash
esptool.py --chip esp32 --port /dev/ttyUSB1 --baud 460800 write_flash -z 0x1000 esp32-idf4-20200902-v1.13.bin

So now micropython is running on the board.

An easier way to do the above is to use Mu, which has a flasher built it.

Copy files

Mu-editor has a built in file manager but it wasn’t working on my board, so I went with ampy.

Install that by: pip install adafruit-ampy then find the port the board is using.

On a mac this lists all the serial ports in use: ls -l /dev/tty.*

On my machine I got /dev/tty.usbserial-1420, so ampy basics is:

• list files: ampy --port /dev/cu.usbserial-1420 ls
• put a file on the board: ampy --port /dev/cu.usbserial-1420 put config.py
• get a file: ampy --port /dev/cu.usbserial-1420 get config.py
• delete: ampy --port /dev/cu.usbserial-1420 rm config.py

the display

This board comes with a 2.13 inch eink display.

todo: make it work!

resources

• https://www.re-innovation.co.uk/docs/ttgo-e-paper-display/
• https://github.com/lewisxhe/TTGO-EPaper-Series
• https://github.com/peterhinch/micropython-nano-gui
• https://github.com/Xinyuan-LilyGO/LilyGo-eink-v2.3-micropython
• https://github.com/vroland/epdiy - drivers for eink screens

Micropython executes boot.py on startup, then runs main.py if found. So my code should go inside a main.py file. Mu should be able to see and write to the board, but its grayed out.

todo: find a easy solution to write files to the board.