Adding a little hysteresis to your comparator might help with the chatter. Something like a 1 to 5MΩ resistor from the output back to the input.
Will do.The hysteresis resistor goes back to the non-inverting, + input. The idea is it adds a bit of the output - either state - to the input, but at high impedance. That requires the input signal to overcome the feedback before it can trigger a flip to the opposite state. Try a 100k and see if you can tell a change.
That's probably it. The whole thing is powered with 30-something AWG wires. Will upgrade tomorrowAnother source of chatter that I've fought with was due to wimpy ground wires for the load, like maybe a shared ground wire for the load and for the PCB. So every time the load would start to kick on, "ground" would shift up a few mV. Doesn't sound like much, but adding a simple wire fixed it. Always good to isolate the brain from the load as much as possible.
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