RE: 14 bit ADC oversample example for the EasyL1105 MSPM0 board

DAB — Thu, 25 Sep 2025 19:30:24 GMT

OK Jan, you lost me.

Taking sixteen 12 Bit samples and dividing them by four does not give you 14 Bit accuracy.

That approach will reduce noise by 75 percent, but the basic measurement is still only good to 12 bits.

RE: 14 bit ADC oversample example for the EasyL1105 MSPM0 board

shabaz — Wed, 24 Sep 2025 16:08:57 GMT

Nice! Ive got a project idea [mention:acaf6a9338de4eef8f6717d5561ed01d:e9ed411860ed4f2ba0265705b8793d05] might be of interest..

It's just a half-thought idea so far. I would like to control a heater element with PID, using the ADC to sense a thermistor. The heater and sensor are are spare parts for 3D printers, the photo shows the one I got, but there are others which come with the heater and sensor assembled in a block with nozzle. I don't want it for 3D printing, but for hot-stamping (a friend asked about this, I figured I would give it a shot). So, I drilled a 6mm hole and a 3mm hole in aluminium. That's as far as I have got.

The photo below shows the bits and pieces so far.. the brass plates are to somehow hold the shape to punch, I'm still thinking that through and might have a solution for that part. Anyway, maybe heater control is an interesting thing for all manner of projects. Maybe the set temperature could be another ADC channel, connected to a potentiometer. Or just up/down buttons and a little display. Not thought of all that so far. Maybe it could be worth making a custom PCB for it too, with a MOSFET. Anyway just throwing the idea out there in case anyone has a small heater requirement and wants to help or even just brainstorm, all ideas welcome to make it a little general purpose and not overly excessive circuit effort : )