I need a 1-5psi pressure switch connected to a transmitter, Bluetooth would work fine, all battery operated and small meaning max size ~ ½” x 1”x2”. Transmitted values do not need to be precise I’m actually looking for +/- pressure changes from a baseline, for instance 2psi, changing to 4psi and back to baseline. Pressure change is gas pressure (air) change, not liquid, corrosion/heat are not factors.
Reasonably feasible and am I starting at the right place?
It’s occurred to me that tire pressure gauges are essentially what I’m looking for and could work I suppose, since they have a pressure sensor and transmitter, though I’d prefer something a bit smaller and lighter and significantly lower pressure showing change in pressure, I imagine tire pressure transmitters are make/break at a certain pressure.
I just came across Arduino.cc and wow… neat projects.
It's an anaerobic sealed fermentation unit that will maintain a certain psi, and automatically add nutrients, and actuate a relief valve at a certain psi. Recording pressure ups, then down as the relief valve actuates allows me to play with nutrients to find optimal fermentation. Bioremediation.
No attempt at being cryptic sorry, I figured nobody would be interested.
