Use this forum to chat about hardware specific topics for the ESP8266 (peripherals, memory, clocks, JTAG, programming)

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By beic
#83392
btidey wrote:If you wanted to use i2c it mIght be worth trying the brzo i2c library.

https://github.com/pasko-zh/brzo_i2c

You have to use external pull up resistors with i2c. Internal pull ups on esp are not low enough value.


Thank you, I already saw that a few days ago, but for that I need more brain power to write a custom library for the PN532 chip.