I want to show my first MySensor-Door-Contact. But first I have to say thank you to @sweebee for his great tutorial and @Petjepet for his MySensors 2.0 Code here what helped me a lot.
Here is a picture of the assembled sensor in his case:
The sensor is made on a hole matrix board with an arduino pro mini 3,3V and at this time with 8MHz.
I have removed the Power-LED but the Power-Regulator is still on the board. Maybe I removed them later if the battery time is to low.
As radio I used a NRF24.
The batteries of the first sensor are empty, so two AA-Batteries can run this sensor vor 7 month amazing!!!
The case is my own design and I have made it on a 3D.Printer.
Here is a picture who shows the sensor mounted at the door:
Update 07.01.2017 batch production: