This sensor is relatively complex to set up, but it works with older Arduino boards like the first-gen Uno. Measuring the pH level of a water source can give you a range of information about the ...

They feature analog pins for reading analog components (e.g., potentiometer, flex sensor, pH sensor ... come across the Uno and Nano. They're two of the most frequently used Arduino variations ...

you can just build it a custom sensor with an Arduino Uno. This paper shredder bin monitor is an easy Arduino project for beginners to get into. It uses an ultrasonic sensor, which is placed ...