I would be happy, if some experienced user might check it for mistakes, I made.
Central is an Adafruit ItsyBitsy M4 Express featuring ATSAMD51
General:
I want to measure temperatures, using a PT1000 sensor
the measured temperatures should be transmitted through RS232
External power is DC 24V
I want it programmed in Circuit Python.
Within the sketch I noted the names of allused parts
I would be happy to receive some comments.
- Is the Capacity required to avoid initial voltage peaks on switching power on?
- How could I avoid destruction of the StepDown Unit on wrong polarity connecting the 24V ?