Welcome.
Is this the sort of thing you mean: **broken link removed**
You can also use a micrcontroller to do the same thing, in fact you can do it without any electronics.
Welcome.
Is this the sort of thing you mean: **broken link removed**
You can also use a micrcontroller to do the same thing, in fact you can do it without any electronics.
To build one, buy one and fully disasembly it. Now you have ALL the parts to build one putting it back together, including housing (the hardest part to build)