3 x Electronic Piano DIY Solder Learning Kit with NE555

3 x SMD Soldering Practice Kit, LED Light Effects with NE555

3 x Chaser Light - DIY Solder Learning Kit with NE555 and CD4017

3 x Audio Level Indicator LED VU Meter DIY Soldering Kit

Advanced SMD Soldering Practice Kit with NE555

LED Digital Hourglass DIY soldering beginner kit

3 x LED Breathing Light STAR - DIY soldering kit with SMD components

2-Tone Door Bell DIY Soldering Kit with NE555