Quantity   Component name
1 × ATTiny13 / ATTiny13A / ATTiny25 / ATTiny45 / ATTiny85 ~ about $1 any microcontroller that above or equal ATTiny 13 will works
1 × Board for ATTiny ~ less than $0.5 from break out board or bread board. look at schematic bellow for wiring. and also the greber file if you want to making like my board
1 × Male Header ~ less than $0.2 color full headers will be awsome !!
2 × 0805 SMD Capacitor ~ less than $0.1 get bigger value you can get
2 × 1206 SMD Resistor 0Ω less than $0.1 if you using masking/silk screen you can short it with a big blop of tin or wire
1 × 3M Double Tape or Hot Glue optional, to mount your board, since this board don't have any screw holes