Gravity: Photoelectric High Accuracy Liquid Level Sensor for Arduino Shipping:1 day you can use a hobby

you can use a hobby knife to cut the trace in the board's surface-mount jumper that connects the IN1 and VBUS pads

your choice of VFC input or NPN output

it's the Feather you have been waiting for

The radio uses open source [SiK firmware](https://github

Gravity: Photoelectric High Accuracy Liquid Level Sensor for Arduino Shipping:1 day you can use a hobbyThis is a photoelectric water liquid level sensor that is operated using optical principles. The advantages of this photoelectric water liquid level sensor are good sensitivity and no need for mechanical parts meaning less calibration! The corrosion resistant probe is easily mounted and can handle high temperature and high pressure. The arduino liquid sensor is equipped with an interface adapter for compatibility with the DFRobot "Gravity" interface.