I've been experimenting with PCB design the last few weeks. I'm currently using an Arduino Uno as my Gateway with everything mounted on a breadboard and dupont cables. As it doesn't have the waf factor I promised my better half to make a nice enclosure for it, but for that I had to create a shield. This one is for my NRF24L01+ network. My latest sensors all work on RFM96 with the MySensors Gateway. But as you can order it almost fully mounted I think it's a nice entrance level solution for those who want to start with MySensors without having all the problems I've seen on this forum. You simple mount the shield - maybe solder the radio - upload the code and you're got to go in 10 - 20 minutes.