Hello, I would like to make the Grove - 16 Channel PWM Driver (PCA9685) work with an STM32F429I-DISC1 board. Can you help me?

I would like to do this to control LED strips, however, I have a problem because no matter how hard I try using the HAL_I2C_Master, it doesn't work.

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ST Employee

Hello @HGanc.1 ,

First, make sure that you are using the correct address and the correct frequency for the I²C communication.

The take an oscilloscope to check the I2C_SDA and I2C_SCL behavior.

Foued

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