1. Board size: 90*60MM
2. Board thickness: 1.6mm
3. Board material: International standard board, all pads are tinned, high-strength fireproof and drop-proof materials, can be disassembled and assembled repeatedly.
4. The PCB board is reasonably designed, and commonly used patch components are used.
5. The 3 columns of components on the left and right are used to practice welding, and each column has a test point.
6. The circular circuit in the middle is a running light circuit, which is composed of CD4017, NE555, and light-emitting diodes. After the welding is correct, it can work after power is turned on.
7. The back of the circuit is also used, with a ruler for easy measurement of components. There are PCB wire examples for easy use in PCB design.
8. Circuit operating voltage 3~12V
8. This kit contains all the components in the following photos.
Number of components: 125
Number of solder joints: 274
Length of solder used: 35CM (diameter: 0.6mm)
Sample welding time: 35 minutes