The product is a loose part with a circuit board: the PCB circuit board is equipped with all components, and you need to assemble and debug it yourself
The welding practice board for SMD components adopts double-sided components, and the double-sided SMD practice has a high board occupancy rate and good cost performance
The circular circuit in the middle is a water lamp circuit, composed of CD4017, NE555, and light-emitting diodes. It can work after being powered on after welding without any errors
The PCB circuit design is reasonable, without burrs, and is small in size, which can be packed in a pocket
Three columns of components on the left and right are used for welding practice, and each column has test points
