Discovered Pages
[Discover] SparkFun Electronics - Relay Tutorial http://www.sparkfun.com/commerce/tutorial_info.php?tutorials_id=119
(electronics relay controller datalogger) 
[Discover] SparkFun Electronics http://www.sparkfun.com/commerce/product_info.php?products_id=8494 (datalogger engineering diy electronics)
[Discover] Data Harvest Ltd http://www.data-harvest.co.uk/ (datalogging science datalogger ict)
[Discover] The CREATE USB Interface http://www.create.ucsb.edu/~dano/CUI/ (usb electronics interface controller)