I have the opportunity to experiment with various permaculture systems.
Recently, I started growing Shiitake mushrooms on the small scale.
Since contamination is a challenge for mushroom farmers, I started thinking if there is a way to pull spores and other contaminants out of the air...
I am having issues finding a Variable current sensor switch that will precisely sense within the AC current ranges of 0-1 Amps (Test Range 0.001-0.2 Amps). Once the range of (0.001-0.2A) is sensed, I would like to trigger an alarm.
Any suggestions on what I could use to sense such low AC currents?
I am designing an Ultrasonic Reciever and Transmitter circuit, in which the Reciever and Transmitter Transducers are connected with the same cables. That means that the Excitation signal and the Received signal will be transported by the same medium. The Excitation signal is a...