Yogurt Machine

I did once a digital thermometer to monitor the temperature of my PC's CPU on the Waterblock Project. Once I was no longer using it for this, I did a little change in the firmware to enable the board's relay no longer turn on when a certain temperature exceeds but to operate withing a range ideal for yogurt making.

(click on the pictures to enlarge)

The next step was place it on a foam box to be used as a temperature monitor.

A small lamp is used to make the heating.

Now it is just a matter of prepare the recipe and put to heat in the box for a few hours...