M5Stack Product Selector?
naia last edited by
We are just discovering M5Stack and a little overwhelmed by the platform. Our goal is to monitor some old level controllers that control a freezer compressor. We need to simply measure 1) an NTC temperature sensor (hopefully fine measuring voltage across the loop) and 2) whether a 220V compressor is on (flagging whether a current loop is above a threshold should be fine) every 5 seconds. We could e.g. use MQTT over WiFi and we already have a way to get MQTT to an InfluxDB database to Grafana.
A few more details - it can be a wet environment (but presumably we could fit the M5Stack inside the electrical box where the current level controller is), and there is a 24 VAC supply available if we can rectify that easily to 5VDC. I don't think we need much user input / touch screen input, but at some point I'd like to learn that on the platform too, since it could be fun.
There seem to be a lot of different options - cores, sticks, atoms - is there an updated chart that would help us narrow down how and/or where to get started? In the store there is a "Solutions" section that seems promising - it talks about "Smart Factory" which is close to what we are looking for, but there are no M5Stack controllers there that it recommends, just high level descriptions of a problem.
Thanks in advance!
ajb2k3 last edited by
The controller would need to be mounted outside where it won’t suffer from atmospheric changes. The Atom or the stamp will work if you just want to read a sensor and send MQTT messages to a server. What “wet” zone thermistors have you looked at? And as to monitoring rhe compressor, you could even get away with a microphone if the compressor is not also damp.