The best way to learn SMD soldering is to build something that actually does something cool when you're done. This NE555 rotating LED practice board produces a mesmerising chasing "water lamp" effect once assembled — power it from 3–12V and the LEDs loop in a smooth sequence, instantly showing whether your solder joints are solid.
The 1.6mm PCB has all components clearly marked, making it easy to place parts correctly. A great first SMD project for anyone stepping up from through-hole soldering.
Key Details
Circuit: NE555 timer + LED driver
Effect: Rotating/chasing LED "water lamp"
Power: 3–12V DC
PCB: 1.6mm, clearly labelled component placement
Component type: SMD (surface-mount)
Tips for success
Double-check component orientation before soldering
Watch for cold (pseudo) joints and floating solder bridges
