search

RobTillaart / I2CKeyPad

Arduino library for 4x4 (or smaller) keypad connected to an I2C PCF8574.
MIT License
49 stars 9 forks source link

[E][Wire.cpp:513] requestFrom(): i2cRead returned Error 263 #19

Closed zejulio closed 11 months ago

zejulio commented 11 months ago

Hello,

I started using this library and from time to time it seams to loose sync, and I get this message on log:

[E][Wire.cpp:513] requestFrom(): i2cRead returned Error 263

I am using ESP32, and I have a small test code were this happens. Any idea whats wrong?

Thanks,

zejulio commented 11 months ago

Hello,

I think I've fixed it, I had 10K pull up resistors on I2C, exchanged to 2k2 and it looks way more stable. Thanks for your work!