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ESP32-C6 LP I2C pins 6/7 aht20 crash #22249

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What do you mean with additional pull up resistors? i2c does need always pull up resistors. This is by design of the bus. Usual are 4k7 for SDA and SCL. When it works without it is a pure lucky strike!
The internal pull up resistors from the esp are always to weak for use with i2c

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