This traditional 555 touch bistable configuration has already been explored in projects on this site. Of course, the power supply must be isolated and the sensitivity can be changed by replacing R1 and R2 for larger resistors.
![](/images/stories/cir/221312132023_142213_0001.gif)
This traditional 555 touch bistable configuration has already been explored in projects on this site. Of course, the power supply must be isolated and the sensitivity can be changed by replacing R1 and R2 for larger resistors.