I bought these components and I'm having some trouble making them work correctly.
My problem is that at room temperature the reading is 26ºC and I know it should be 19ºC compared with an analog termometer.
Also, when I use it for measuring a high temperature on an oven (over 150-200ºC) the reading is showing 100-110 ºC and it increases its value but really slowly (like 100ºC to 130ºC in 20 min).
I followed this tutorial and i don't know why is not working. (both thermocouples show the same lecture)
I tried to switch the positive and negative of the thermocouple and it's not working either.
If anyone could tell me what to do or why is not working properly, it would be much appreciated.
Thanks in advance.