This board has 4 TC amps and jacks on it.
That's surprising that board is so expensive, the new MAX31855 chips are fairly cheap compared to their predecessors. They also won't work with HeaterMeter without some hardware jiggerypokery and source code changes. They're SPI bus, not analog.I was hoping to do it cheaper.
That's surprising that board is so expensive, the new MAX31855 chips are fairly cheap compared to their predecessors. They also won't work with HeaterMeter without some hardware jiggerypokery and source code changes. They're SPI bus, not analog.
The best bet would be to just copy paste the existing schematic onto its own board x3 and just wire up the 3.3V, GND, and each output to a header you can mate to the Probe heater on the HeaterMeter. Still you're looking at $7-8 per plug plus shipping and the PCB cost, and you'd need somewhere to mount the board.
Here is a proto board that has what you would need, its the best routing board, but it should work. osh park, its 3.20 for 3
Are you planning to testing in the near future? Please PM me and I will try and get it assembled and will start some testing.