I would be careful when stripping cheap USB-powersupplies and tucking them into a box in the wall. Read this page: http://www.lygte-info.dk/info/indexUSB UK.html and this page: http://www.lygte-info.dk/info/usbPowerSupplyTest UK.html to see how badly constructed some of these powersupplies are.
He also explains how he is testing those powersupplies: http://lygte-info.dk/info/usbPowerSupplyTestHow UK.html
Very informative i must say.
Nice! Although i would probably have opened the unit and see if i could tap into the signal of one of those 'operation' LED's.
That way the whole MySensors node would be invisible 
Hi,
I was cleaning up some of the wire mess in my metercabinet and disconnected power from the gateway temporarily. However, it seems that after the power has been off, the nodes don't automatically seem to 'reconnect' again. When i disconnect power from the nodes, they seem to 'find' the gateway again and data starts flowing back in again.
Is this normal behaviour? Quite annoying actually if i have to go through all the nodes (only 2 in my case, but whatever) and powercycle them too.
And yes i waited, but after half an hour still no new data came in, where normally it would receive new data every minute.
I'm using the Ethernet gateway which is read by Domoticz. I have two humidity nodes (DHT22).
Thanks for your reaction. No repeaters used in my home, all nodes (2) directly connect to the gateway.