Steps:
1. The parts we need in this project.
2. Some steps to make this circuit.
3. Finished and test.
Product list:
BD140 transistor https://www.utsource.net/sch/BD140
IR receiver https://www.utsource.net/sch/IR%20receiver
100 ohm resistor https://www.utsource.net/sch/100%20ohm%20resistor
10k resistor https://www.utsource.net/sch/10k%20resistor
led https://www.utsource.net/sch/led
More detail, pls check the video on Youtube: