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by Christian Hortolland
Tue Nov 18, 2025 7:53 am
Forum: General Discussion
Topic: ESP32-S3 I2C Pullup Resistors : are they necessary ?
Replies: 2
Views: 1443

Re: ESP32-S3 I2C Pullup Resistors : are they necessary ?

Thank you very much for this answer !
Best regards !
by Christian Hortolland
Mon Nov 17, 2025 6:29 pm
Forum: General Discussion
Topic: ESP32-S3 I2C Pullup Resistors : are they necessary ?
Replies: 2
Views: 1443

ESP32-S3 I2C Pullup Resistors : are they necessary ?

Hello,
I have been working with ESP32-S3 for several years (T-Display Lilygo and XIAO boards) in the Arduino environment, and I have just realised that the I2C bus (which I have implemented on several different circuits: TC74, SHT21, PCF85263, DS3231, etc.) taking care to add pull-up resistors, as ...

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