battery powered very simple low power programmable input output device: reading of a sensor, 0 or 1 output varying in time (e.g. on each input I, give a zero output for 3 minutes)
Any recommendations? thanks!
Water sensor – programmable input/output device – motor output
This problem may sound a bit weird, well, that’s not because there are no other or better solutions that are easier in the technical sense. Let’s just say that this particular option is the only one left because some greedy humans don’t give shit about the law, and to make them give shit, it would come at a higher cost than fixing it myself. Here it comes:
Two tubes of 13 centimeter diameter are connected in a T – junction at 90 degrees just under ground level. The vertical tube is about 80 cm long. There is a very slight airflow in the horizontal tube that needs to be limited or stopped at the uphill side. This is now done by manually pressing a foam ball in the T-junction. However, (sewer) water can flow from the uphill side of the horizontal tube. When water flows in the horizontal tube (uphill side only), it needs to pass the T-junction. This opening or closing of the T-junction at one side should be automated. Extra difficulty: this is a no AC power environment; batteries will have to be used (AA or 1/2/3s lipo’s). Another difficulty: the whole automatic system should be lightweight, so it can be mounted inside the vertical tube without drilling, or without damaging it (e.g. some strong double sided tape, pu foam or the like, or it can be hung inside the tube be putting an extendable bar under tension in the tube).
So I was thinking: some kind of cover that fits the tube, with a water sensor attached to it, some kind of super low power Arduino device, and some kind of low power motor. However, as a psychologist/economist, I have no experience whatsoever with any of these three devices (I like to experiment though