@roberts_lando That tutorial uses the RPI GPIO4 bitbanging access to the 1W but Neurons/Axons use the DS2482 I2C to 1Wire convertor. You should use the "ds2482" module... For example check this https://skyboo.net/2017/02/raspberry-pi-1wire-bus-master/

We have found the issue. In the meantime, you can fix it by running the apt upgrade command three times each followed with a reboot.

@stephane-clavel Do the RUN leds blink? Did you save the direct switch configuration to NV ram or do you set ip up again after boot? Can you provide the output of i2cdetect -y 1 ?

@dirk The GPIOs should be compatible. Did you update to the wiringpi? http://wiringpi.com/wiringpi-updated-to-2-52-for-the-raspberry-pi-4b/

B34 is cooling but B35 is heating controller. We suggest to set the followin PI parameters Xp=between 10 and 50; Ti = between 100 and 150. Or use a PID controller

@roberts_lando In the next release axon-kernel we include more modules (at least 1wire devices)

If there are some missing modules, you need to compile it.
On Axon (or generaly any arm64 platform) do:

apt install build-essential git 
git clone https://git.unipi.technology/UniPi/axon-linux.git
make unipi-axon_defconfig

Now you can change kernel configuration to desired state

make menuconfig

Compile new modules

make modules

You can compile on amd64 platform using CROSS_COMPILE

make unipi-axon_defconfig CROSS_COMPILE=aarch64-linux-gnu- ARCH=arm64
make menuconfig CROSS_COMPILE=aarch64-linux-gnu- ARCH=arm64
make modules CROSS_COMPILE=aarch64-linux-gnu- ARCH=arm64

@boy-lenssen Yeah, that's something we are working on to protect bricking the units during the FW upgrade process. If the RUN led is dead, send it to us so we can reflash the FW.

Using Owfs with kernel modules ds2482 doesn't work well.
It requires to disable ds2482 in devicetree.
Insert this patch

fdt set /soc/i2c@01c2ac00/w1master@18 status "disabled"

into file /boot/boot.cmd, call

mkimage -C none -A arm -T script -d /boot/boot.cmd /boot/boot.scr

and reboot.
If you have our new kernel, there is not file /boot/boot.cmd
In this case copy attached file attached file 30-disable-1wmaster.conf to directory /etc/bootcmd.d/src
and call

  cd /etc/bootcmd.d; make force; reboot

The files has been moved into a new repostirory: https://repo.unipi.technology/debian/ The FW tool for extension can be found here https://kb.unipi.technology/files:software:tools:00-start#extension_firmware_update_tool