Use testing mode in order to show "hello world" on the screen at arduino startup : Verify contrast (it could be too low preventing you to see text), you can adjust contrast using the blue ...

Verify contrast (it could be too low preventing you to see text), you can adjust contrast using the blue potentiometer on the I2C backpack. Check the I2C address ...

Step-by-step guide on designing and programming a custom I2C slave sensor device using Arduino. Details emerge about Charlie Kirk shooting suspect. Here's what we know. My Dad Was Gay — But Married To ...