Hi! On a standalone project, for what I try to partly "imitate" an Arduino Mega, I want to get a connection to a sensor board over I2C. It has pull up resistors on it and with my Mega, it works without anything inbetween. While designing my PCB, I have the Arduino Mega schematic, but unfortunately …

Pull-up resistors on standalone project

GoingForGold August 30, 2012, 6:43pm 3

Thank you!

What would happen if I add them but they would not have been necessary?