Control Pollin Funksteckdosen with an Arduino Nano and a Synology Diskstation
To use this with Synology Diskstations install the file ch341.ko from: https://github.com/robertklep/dsm7-usb-serial-drivers.
You need to do an "insmod usbserial.ko" before you can do an "insmod ch341.ko" (otherwise you will get an error "unknown symbol").
The circuit should look like this (D11 is used in the example code).
The antenna shall measure 17,5cm (433MHz --> lambda/4).
