How to build a voltage trigger? Answered
Need to build a voltage trigger, for a project. This is new for me so i need some tips to get started. the point is to build it, not to buy one. The trigger we are looking for is like the one used in this instructable: https://www.instructables.com/id/Cheap-Easy-Solar-Powered-Robot/step1/The-Circuit/
Appreciate any help I can get.