The pins look like this:Īt the ESP32 SCL (SCK) is on GPIO 22 and SDA (SDI) is on GPIO 21. With the new T-Display project I included the I2C connector as well. The order does not match several OLED displays, but the ZS-042 rtc clock, the 1602 display adapter and many more. But instead of SMD 1.0 mm connector I just use the regular 2.54mm raster with XH connector on the board and respective 4 pin connector wire.įollowing the same order the pins are assigned: The pin on the T-Display is 34 (channel ADC1_CH6) with a 1:2 battery voltage divider.įollowing the inspiration of SparkFun with their QWIIC connector I tried to replicate the pin order. This can be seen in the provided schematics from TTGO for the T-Display: You can directly measure the voltage of the LiPo battery on Pin 34. With a battery of 1000 mAh you can use it for 9 hours.įurther measurement has been conducted in November 2020. The pins are: PINĪs measured in April 2020 the board needs 68 mA for running. This makes this board suitable for a variety of measurement applications. Many pins of the ESP32 that are related to the ADC converter are exposed on the T-Display. You might have to press STOP once and then will be greeted with Here you select MicroPython (ESP32) and the correct Port or WebREPL Silicon Labs CP210x USB to UART Bridge (COM6). After opening Thonny change the settings to Tools > Options… > Interpreter.

MicroPython should now be running on your T-Display. Flash the new firmware with esptool -chip esp32 -port COM6 -baud 460800 write_flash -z 0x1000 firmware.bin.Erase the flash esptool -port COM6 erase_flash.Check your board with esptool.exe -port COM6 flash_id.Open cmd or powershell and navigate to the folder with the esptool.exe and firmware.bin.

You can do this by right-click on the Windows symbol > Device Manager > ports (COM & LPT) and there you’ll find Silicon Labs CP210x USB to UART Bridge (COM6). Thonny 3.3.0 for Windos, other operation systemsĬonnect your T-Display to a USB port of your computer and determine the port.

firmware.bin micropython v1.12 with ST7789V driver library.

I downloaded the most recent in November 2020 and put them in the first v0.1 release. You need 2 programs and 1 file to get started with MicroPython on the T-Display. Installation of MicroPython Simplified Installation You need the following 5 steps to be able to program your T-Display with your Laptop/PC. Installation and power measurements are found at the bottom of this document. Projects with the TTGO T-Display | t-display t-display ESP32 with display in Python and C View on GitHub Projects with the TTGO T-Display

Cp210x usb to uart bridge 3.3