1. Here is the circuit diagram.

2. Here are all the parts we need.

3. Some screenshot of the making steps

4. Test it.

List of electronics component below:


Resistor 100K ohm x2 http://bit.ly/2WmR1ud

Resistor 2.2K ohm http://bit.ly/2AJVU8g

Resistor 10K ohm x2 http://bit.ly/2TMSWXV

Resistor 7.5K  http://bit.ly/2Xry0Ha

Resistor 5.1K  http://bit.ly/2M9Ua0l

Resistor 1K ohm http://bit.ly/2XXF9R3

0.33R/5W resistor X2 https://ebay.to/32cTZFk


Capacior 100nF x4 http://bit.ly/2QK6ph7

Capacitor 47uF/50V http://bit.ly/2XpZCkV

Capacitor 100uF/25V http://bit.ly/2RMTpMi


1N4007 http://bit.ly/2tt5dFO

Female Header http://bit.ly/2RU8f3T

Male Header http://bit.ly/2TOw5Lv

Power Cos http://bit.ly/2IrYcfF

LCD 16x2 http://bit.ly/2Jeb3ng

LM7805 http://bit.ly/2NAK9tN

Atmega 8 http://bit.ly/2XsqOj8

More details, you can check it on Youtube: