Does anyone sell one of these premade? I've seen quite a few circuits out there to make your own taking various approaches, but is there something prebuilt that I could just order online or something?

Low-current, momentary action pushbutton switches, such as PCB-mount ‘tactile’ types, are cheap, and available in an abundance of different styles. Latching types, on the other hand, are often larger, ...

I designed this relay circuit to function as a DPDT toggle which is controlled by a momentary switch. I strive to keep my circuits simple with little or no integration (555’s, transistors, etc). The ...

In the world of the cockpit simulator hobby, no detail is too small to obsess over. Getting the look and feel of each and every cockpit control just right is important, and often means shelling out ...

[Patman2700] has a nice scope for his paintball gun that uses a red dot instead of cross-hairs. The problem is that he kept forgetting to turn it off which ended up running the batteries down ...