I've been poking around and I've found a few good links (I can share if you ask) but I'm a bit overloaded with information and could use a little help. What I'm looking for is a SMPS for use with batteries (AA). Does anyone have any good sites for simple but efficient SMPS? Also are there relays that can be activated by 3V? Thanks -- Linux Home Automation Neil Cherry ncherry@linuxha.com http://www.linuxha.com/ Main site http://linuxha.blogspot.com/ My HA Blog Author of: Linux Smart Homes For Dummies -- http://www.piclist.com PIC/SX FAQ & list archive View/change your membership options at http://mailman.mit.edu/mailman/listinfo/piclist