Temperature Measurement with the RevPi AIO Module

If you're wondering how to measure temperatures, you've come to the right place.

Here is the test setup that I’ve used

PT1000 with 4 wires
RevPi AIO
RevPi Core 4

Hardware Setup

Temperature Measurement AIO-20240726-094935.jfif

(13:43:32,15) C:\Users\d.conzelmann\OneDrive - KUNBUS GmbH\Scripts>ssh pi@192.168.1.211
Linux RevPi99988 6.1.46-rt13-v8 #1 SMP PREEMPT_RT Mon, 5 Feb 2024 15:02:39 +0100 aarch64

The programs included with the Debian GNU/Linux system are free software;
the exact distribution terms for each program are described in the
individual files in /usr/share/doc/*/copyright.

Debian GNU/Linux comes with ABSOLUTELY NO WARRANTY, to the extent
permitted by applicable law.
Last login: Fri Mar  1 12:42:48 2024 from 192.168.1.120

Wi-Fi is currently blocked by rfkill.
Use raspi-config to set the country before use.

pi@RevPi99988:~ $ piTest -d
Found 2 devices:

Address: 0 module type: 136 (0x88) RevPi Connect 4 V1.0
Module is present
     input offset: 0 length: 6
    output offset: 6 length: 7

Address: 32 module type: 103 (0x67) RevPi AIO V1.4
Module is present
     input offset: 13 length: 20
    output offset: 33 length: 4

pi@RevPi99988:~ $ piTest -f
update firmware success
pi@RevPi99988:~ $ piTest -d
Found 2 devices:

Address: 0 module type: 136 (0x88) RevPi Connect 4 V1.0
Module is present
     input offset: 0 length: 6
    output offset: 6 length: 7

Address: 32 module type: 103 (0x67) RevPi AIO V1.5
Module is present
     input offset: 13 length: 20
    output offset: 33 length: 4

pi@RevPi99988:~ $ piTest -r RTDValue_1
2 Byte-Value of RTDValue_1: 222 dez (=00de hex)
2 Byte-Value of RTDValue_1: 222 dez (=00de hex)
2 Byte-Value of RTDValue_1: 222 dez (=00de hex)
2 Byte-Value of RTDValue_1: 222 dez (=00de hex)
2 Byte-Value of RTDValue_1: 222 dez (=00de hex)
2 Byte-Value of RTDValue_1: 222 dez (=00de hex)
2 Byte-Value of RTDValue_1: 222 dez (=00de hex)
2 Byte-Value of RTDValue_1: 222 dez (=00de hex)
2 Byte-Value of RTDValue_1: 222 dez (=00de hex)
2 Byte-Value of RTDValue_1: 224 dez (=00e0 hex)
2 Byte-Value of RTDValue_1: 227 dez (=00e3 hex)
2 Byte-Value of RTDValue_1: 231 dez (=00e7 hex)
2 Byte-Value of RTDValue_1: 233 dez (=00e9 hex)
2 Byte-Value of RTDValue_1: 235 dez (=00eb hex)
2 Byte-Value of RTDValue_1: 235 dez (=00eb hex)
2 Byte-Value of RTDValue_1: 236 dez (=00ec hex)
2 Byte-Value of RTDValue_1: 236 dez (=00ec hex)
2 Byte-Value of RTDValue_1: 237 dez (=00ed hex)
2 Byte-Value of RTDValue_1: 237 dez (=00ed hex)
2 Byte-Value of RTDValue_1: 237 dez (=00ed hex)
2 Byte-Value of RTDValue_1: 237 dez (=00ed hex)
2 Byte-Value of RTDValue_1: 237 dez (=00ed hex)
2 Byte-Value of RTDValue_1: 237 dez (=00ed hex)
2 Byte-Value of RTDValue_1: 237 dez (=00ed hex)
2 Byte-Value of RTDValue_1: 237 dez (=00ed hex)
^C
pi@RevPi99988:~ $

Here is the documentation:

https://revolutionpi.com/en/tutorials/uebersicht-aio-2/rtd-messung-2

And here:

https://revolutionpi.com/en/tutorials/uebersicht-aio-2/rtd-kanaele-fuer-temperaturmessungen-konfigurieren-2

Basically, I have just switched the defaults of the PiCtory configuration of the AIO Module to PT1000 and 4 Wire.