OK, so here we are, a couple of weeks down the line from when I first made this thing and im fiddling with it again! Why cant I leave things alone?! Oh well, it usually turns out for the best anyway...

In this additional page to my previous guide, I will be showing you how to add a couple of status LEDs to your Temperature Controlled Fan Unit™ ;)

This is what im going to do, my mission statement if you like :P...
There will be two LEDs, a red LED and a blue LED. Now the blue LED will come on when the temperature at the probe is below both of your set temperatures, i.e. the fans are off. There will be no LEDs on when your fans are at 5v. Finally, the red LED will come on when your fans are at 12v. Sound simple enough? Well here we go...

The New Schematic

Now let me explain this. Its very simple. The bits I have added are in red, and you should be able to spot them easy enough if you compare this and the old schematic.

The red LED is the one on the left (high temperature alarm pin6), and the blue the one on the right (high temperature alarm pin7). The new resistor needs to be calculated according to the LEDs that you use, we dont want any nuked LEDs now do we? I only needed one resistor because both my LEDs were the same voltage and current. You will need to calculate the resistor required for your particular LEDs. If they are not the same you will need a resistor for each LED rather than one for both.

Anyway, thats all the technical stuff out the way - so now I can show you some pics of mine with the LEDs added - wooo :) (As you'll see ive also added some lovely trim)...

Hehe, the fingerprint scanner is back! ;)

Oooh, its a bit chilly in here

Argh! Im boiling!! (Yes the temp is the same cos I had to change the boundaries to get the led to come on) ;)

There, much nicer looking, and for all those of you who dont have noisy delta fans like me, youll be able to see whats going on.

The End.