Learn how to easily adjust the contrast of a 1602 LCD display using Arduino. In this quick tutorial, I’ll show you a simple trick to control the contrast electronically, without relying solely on the ...

The digital potentiometer has ±30% end-to-end resistance tolerance. Assuming that the tolerances of R 1, R 3, and V DD are negligible compared with those of the potentiometer, you can achieve the ...

In summary, a keypad would be quicker to use, but this is simple to implement. Not in summary, read on…. Note: scroll down if you want to look at the test code.. Setting a 16bit binary number that ...