Well, After carrying out all the necessary calculations to choose right component, it's time to design schematics.

I decided to use Diptrace, to Draw Schematics and PCB.

I really love this CAD tool, It won't take much time to learn this tool. And it is full of some cool features. Am planning on to write a blog about this.

In Last log, I discussed about driving and power supply circuits. There isn't much to mention about MCU and circuit around.

Atmega328P (DIP) running on 16MHz Xtal and Reset button, thats all.

- INLET Valve is always going to stay on, in Idle & Clean Modes.

- So I have not used special driver circuit (Running directly on +12V Power Supply), for INLET valve.

- Terminal Block Connector are provided for connecting Solenoid Valves and DC Motors over long wires.