I'm working on a project using TTGO TS wich communicate wih arduino via I²C protocole How can I find the adress of TTGO TS board used in I²C communication ?

  • 2
    you would find out the address by reading the instruction manual, or the datasheet
    – jsotola
    Apr 17, 2021 at 2:37
  • 1
    You could also use an I2C scanner (google it, there are dozens of them out there).
    – romkey
    Apr 17, 2021 at 5:57

2 Answers 2


Like @romkey said, use a I²C scanner to find the address of the device, for example this one from the Arduino website. Connect the device to the Arduino board, upload the code and look up the I²C address of your device.


The TTGO TS uses an ST7735 display. This is not an I2C device. Instead it uses its own custom serial protocol. Since the DC pin is broken out for you it uses the 4-wire serial interface which is simplest to use with SPI.

It's confusing that they use the terms SCL and SDA, which makes you think it's I2C, but it's not.

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