The sensor has to be submerged in the water for this to work properly. Arduino ... the pH level of a water source can give you a range of information about the liquid. Its oxygen content, hardness ...

The microcontroller-based concept was chosen because I wanted to scale the sensor system later to suit other applications. Here is the diagram of my Arduino infrared close ... current (and hence the ...

[Eunjae] is using an Arduino Nano, a 128×64 OLED screen, and a battery inside of a rugged waterproof case. He also added an ADS1115 16 Bit DAC between the oxygen sensor and the Arduino for fast ...

Catalytic bead LEL sensors need a certain level of oxygen to correctly read combustible gas up to 100% LEL. The catalytic bead lower explosive limit (CB LEL) sensor is widely used for combustible ...