Something like http://www.ebay.co.uk/itm/Skynet-SNP-9013-C-5V-1A-12V-1A-PSU-/281379631739?pt=UK_BOI_Electrical_Components_Suppl ies_ET&hash=item418388727b]this [/URL] would give you 5v for the BOB and 12v for limit/home switches, etc. And easier to mount and probably more reliable than a wall wart long term