Hello all! I have a Arduino UNO with a program that does some basic temperature and light control. The program worked great until I swapped from a standard 16x2 LCD screen to a 20x4 I2C LCD screen. Now the Arduino will run great for a while, usually 12-32 hours, but then it will display crazy data …

I2C LCD Screen, Arduino Freezing after 12-32 hours

Peter_n April 24, 2014, 6:14pm 6

Slower I2C, or lower pullup resistor, or an other cable.
What do you use now for pullup resistors for SDA and SCL ?

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