MDS-60 DIY Metal Detector Module
This small do-it-yourself metal detector kit is the perfect way to learn basic soldering while creating a small, fully functional metal detector. This metal detecto..
NE555 + CD4017 Running Light Kit
The kits' main circuit and decimal counter circuit is generated by the clock, by the NE555 as the core of self-excited multi-vibrator power through R2, R3, R4 to char..