Building circuit.

There are 2 ways to build the circuit. Using a prototype board, or printing your own PCB. I have done it both ways, and I included all the pictures in the download file.

Method #1 Prototype Board

Layout that I use

Method #2 Print a PCB shield.

PCB drawings, part values, are include in the download file.

Closer look on SMDS

In the future I will print the PCB with OSHPARK.COM so you can order through them a PCB

One think to consider is that from the 5 pin plug you will see 4 wires only. The middle wire is the ground , and the 4^th wire is also the ground wire for the heat sensor . Please pay attention to the pictures.

(the photo is from the 'prototype method')

In the download file you will find the schematic, PCB, and a lot of pictures of how to build it step by step.