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--- projects:electronics:plc [2025/09/23 21:26] – daniel
+++ projects:electronics:plc [2025/09/27 06:52] (current) – daniel
@@ Line 1: / Line 1: @@
-IPMB20RP
+====== Steps to install an Iono Pi======
+This particular model is a IPMB20RP.
+Following the instructions in the kernel module github page, all the examples seem to work. The kernel module is compiled for a specific kernel. If apt update/upgrade installs a new kernel, how should the module be recompiled?
+Chatgpt gives some hints.
+First, it says I should install raspberry pi headers:
+''sudo apt install raspberrypi-kernel-headers''
+Then, it suggests putting the kernel module in a subfolder ''extra'' because that is a common folder for third party modules.
+====== Usage ======
+Reading the temperature from the file system seems to work:
+    $ cat /sys/bus/w1/devices/28-0316458506ff/temperature
+
+The overlay for the onewire sensors seems to be called dtoverlay=w1-gpio
+====== Links ======
 [[https://sferalabs.cc/product/iono-pi/|Iono Pi]]
@@ Line 8: / Line 36: @@
 Kernel module: [[https://github.com/sfera-labs/iono-pi-kernel-module|]]
+Onewire discussion: [[https://forums.raspberrypi.com/viewtopic.php?t=77611&start=50|]]