If you are designing your own intelligent “Graden Computer” with an optional digital plant moisture sensor/water pump controller that lights an LED to alert the user when it is time to water a potted ...

At the heart of the circuit is the OS25B10 transmissive optical sensor with phototransistor output ... After construction and pre-flight test, the module was connected to an Arduino board and measured ...

According to [Mathieu], the answer is also yes, but only if you ignore the datasheet circuit and build this amplification circuit for your dirt cheap Doppler module. The module in question is a ...