@yveaux said in Ikea Molgan Hack: @magpern the instructions on openhardware.io state that the Molgan must be battery powered while programming: Well, then I can confirm that you don't have to power the Molgan from batteries just for programming. Burning the bootloader works fine with just power from the ISP port and programming it through FTDI works fine if power comes from the FTDI. What I found wierd is that the atmega328 had power, the radio had power, it wrote debug messages to the FTDI - when powered through the FTDI, it send radio messages etc, but it just did not receive messages. Messages where not received until I supplied power to the + / - pads (battery pads). I did read the instructions on openhardware.io, but I didn't follow then to the t.

Yes and no. The library I use is for single wire. A new lib (or better, an extension to the existing) is required for I2C. But the logic layer can be reused assuming the api is kept intact (which it should, as there are no hardware specifics in the api). I considered using I2C, but rejected it in order to be able to be more versatile and less dependent on pins and components. But the device register map is identical between the devices so it is enough to switch the data marshaling parts. The library is based on this:https://github.com/jimblom/sha204-Breakout But I have made a few changes to it to make it more suited for device use. You can find my lib in the development branch of the MySensors git by now. It also carries a sketch to personalize the device.

It would be nice to control the Patrull similarly to http://thingm.com/products/blink-1/.