“YX8018 is a 4-pin integrated circuit for driving solar powered garden LED lights and is found on many cheap garden lights. You can buy 10x YX8018 ICs on AliExpress for around $1. You will need the following parts to build one on your own.
Parts
- i-Cd AA 300mAh 1.2v rechargable battery
- YX8018 solar LED driver IC, TO-94 package
- Solar panel, 5cm x 5.5cm
- 3x white LED100 Microhenrys +/-10% inductor (brown black brown silver)
- Switch”