Recent content by macmack5

Using the RTD's purchased from your accessories, which wire goes where on a channel to the RTD board?

What is the additional plug on the side for? Is there up-to-date documentation for this product?

In the latest OS for R Pi you are forced to use the virtual environment. For the long explanation: https://peps.python.org/pep-0668/ The solution for Thonney development environment users: (1) Create the virtual environment in thonney: make a new, clean folder somewhere switch to...

16 relay board I can run the C test program - all LED's light in sequence. I can run python in my virtual environment from the command line and import SM16relind works. I can't get it to import in Thonny. I have referenced the python3.11 program correctly. What am I missing?

I then connected 10 M (30 ft) of TC wire to a TC and to the board - works. So apparently, the panel connection strip is the problem. (Just twisted TC extension wire and TC wire together. No screws, solder, etc.)

Further experimentation: If I use a commercially available 6 foot extension cable (comes with M/F plugs), remove the F plug, connect to the board, plug into TC on other end, I get good readings. But the panel plugs wired with commercially available type K cable gives the errors mentioned earlier.

ie, can I add a calibration equation over the range of interest....

I believe you are correct. I will experiment with whether it is stable enough to use, or whether I have to run the wires straight to the board.

wired in: 24.2 C through plugs: 8.0 C

For the channel with the TC wired straight in: smtc 0 read 1 24.1 smtc 0 readmv 1 -0.20 smtc 0 readct 1 29.6 for a channel through plugs: smtc 0 read8 8.4 smtc 0 readmv 8 -0.66 smtc 0 readct 8 30.0

In the mean time I wired straight in and it is basically correct.

I have a through panel jack rated for K type, the thermocouples have male plugs. The jacks are wired to the board with thermocouple wire.

I have everything connected, good response, but the K type thermocouple readings show a significant offset from actual temperature, say 15 degrees F. I am using thermocouple wire from the jacks to the board. Jacks are K type. Polling the boards shows type 3 which should be correct. Any...

I should add that I am accessing the board from a Python source.

Thermocouple board - Is there a way to know if a thermocouple is connected to a thermocouple? I have a project with panel mounted plugs (8 total) and it would be nice to have a way to know if there is a thermocouple plugged in? (Plugs are connected the hat)