T-Relay 4, I2C pins

Reply to T-Relay 4, I2C pins on Sun, 12 May 2024 13:43:36 GMT

Vadym — Sun, 12 May 2024 13:43:36 GMT

@teastain2 I think I have a similar problem with this one
But I haven't been able to fix it yet.
Some version of the sketch and a couple of screenshots are here
If you need more information, please let me know. Thank you for trying to help.

Reply to T-Relay 4, I2C pins on Fri, 10 May 2024 23:55:38 GMT

teastain2 — Fri, 10 May 2024 23:55:38 GMT

@vadym It is hard to understand!
Can you post a sample stripped-down test sketch of a simple I2C device and I will take a look.
I often use a M5Stack ENV sensor with a SHT3x sensor in a very minimalist sketch.
-Terry

Reply to T-Relay 4, I2C pins on Fri, 10 May 2024 14:31:21 GMT

Vadym — Fri, 10 May 2024 14:31:21 GMT

@teastain2 It does not work, and a specific I2C connection does not work. Scanning devices with I2C doesn't help either. Moreover, this code and connection immediately works on other Arduino devices, but it does not work with lilygo, does not find devices via I2C (the rest of the code works).
Is it possible that this is due to incompatibility/incorrect operation of the libraries?
I tried to use the libraries that are here, but the Arduino IDE constantly offers to update them, and additionally tried to update some libraries, but nothing happened either.

Reply to T-Relay 4, I2C pins on Thu, 02 May 2024 10:07:35 GMT

Vadym — Thu, 02 May 2024 10:07:35 GMT

@teastain2 yes, dual row pins)
Thank, you! I will true)

Reply to T-Relay 4, I2C pins on Wed, 01 May 2024 19:42:50 GMT

teastain2 — Wed, 01 May 2024 19:42:50 GMT

@vadym You have a dual row of pins on the board?
Any of those GPIO could be used for I2C.
In your sketch you have to tell the Wire library which two pins they are.

Wire.begin(SDA, SCL);