The following kits are currently available. Click on the next to a project for a popup image. Click on its Code to add it to your order form. Use the Order Form link on the left to edit your order or change the quantities.

IMPORTANT SAFETY NOTICE. Some of these circuits, notably those which have relay outputs, show how the relay contacts can be used to switch mains voltage powered devices. NOTE THAT THIS IS FOR INFORMATIONAL PURPOSE ONLY. THERE IS A POTENTIAL HAZARD WHEN USING MAINS VOLTAGES AND EQUIPMENT, THEREFORE DO NOT UNDER ANY CIRCUMSTANCES ATTEMPT TO CONNECT THE MAINS TO ANY OF THESE CIRCUITS. IF ORDERING THESE KITS FOR SOMEONE ELSE, THIS PRINTED WARNING NOTICE MUST BE PRESENTED TO THEM TOGETHER WITH THE KIT.