1. Some parts needs in this project.
2. Soldering.
3. Finished.
4. Connect test.
Product list:
ESP8266 http://bit.ly/2KPHFEh
SPDT 12V Relay http://bit.ly/2MKR8xN
Transistor C1815 http://bit.ly/2Hf1jtN
Resistor 10K http://bit.ly/2TMSWXV
Resistor 1K http://bit.ly/2XXF9R3
Resistor 470 http://bit.ly/2ubDCcE
Led 3mm http://bit.ly/2IkuH1s
LM7805 SMD http://bit.ly/2mVpLXO
Capacitor 100nF http://bit.ly/2QK6ph7
Capacitor 220uF http://bit.ly/2SEgpxy
Capacitor 100uF http://bit.ly/2RMTpMi
Diode 1N4007 http://bit.ly/2tt5dFO
More details, pls check the video on Youtube: