I am showing you how to build a color organ while only using an Arduino Uno, one MSGEQ7 and five external electronic components. I am using three high power led and three MOSFET to visualize the three different frequency bands of the music. Join me for this awesome and educational build.
Step 1: Watch the video!
The video already gives you a lot of details about the build, but I will cover the most important steps again.
Step 2: What do we need?
Here is a small and easier overview of the components we gonna need:
1x Arduino Uno
2x 100nF capacitor
1x 10nF capacitor
1x 33pF capacitor
1x 200kΩ(1/4W) resistor or 2x 100kΩ(1/4W) resistor
3x 5Ω(5W) resistor
3x 1kΩ(1/4W) resistor
3x BUZ11 N Channel MOSFET
1x Jumper Wires
1x Power supply (5V, 2A)
3x 1W High Power LED (red,green,blue)
If you already have the parts laying around than you can skip to step 4. Otherwise follow step 3 and order your parts
Step 3: Order your parts!
Here is a little part list with example sellers from Ebay and Amazon. I hope it helps you to get your components fast and easy:
Resistor kit: http://www.ebay.com/itm/400-Pcs-1-4W-1-20-Kinds-Ea...
5Ω(5W) resistor: http://www.ebay.com/itm/10pcs-5W-5-6-ohm-5R6-Axial...
Power Supply (5V, 2A): http://www.ebay.com/itm/DC-5V-1A-2A-3A-4A-5A-EU-U...
Arduino Uno: http://www.ebay.com/itm/UNO-R3-Development-Board-...
Capacitor Kit: http://www.ebay.com/itm/Lot-of-1000Pcs-Set-Kits-5...
BUZ11 N Channel MOSFET: http://www.ebay.com/itm/IRF-IRL-FQP-BUK-BUZ-FDP-I...
1W High Power LED (green): http://www.ebay.com/itm/5PCS-x-High-Power-Green-70...
1W High Power LED (red): http://www.ebay.com/itm/2PCS-x-Red-High-Power-60L...
1W High Power LED (blue): http://www.ebay.com/itm/2PCS-x-High-Power-Blue-30L...
Jumper Wires: http://www.ebay.com/itm/Male-to-Male-Solderless-Fl...
Audio Jack: http://amzn.to/1gt9QTS
Resistor Kit: http://amzn.to/1gt9XPf
Power Supply (5V, 2A): http://amzn.to/1lEBiPl
Arduino Uno: http://amzn.to/1iNrB3C
Capacitor Kit: http://amzn.to/PD2jZj
1W High Power LED (green): http://amzn.to/1iNsl91
1W High Power LED (red): http://amzn.to/1iNsZmJ
1W High Power LED (blue): http://amzn.to/1gtbiFI
Jumper Wires: http://amzn.to/NgYFSR
Step 4: Create the circuit!
Now it's time to get serious. Wire up components on a breadboard is pretty simple and I bet you will get it right after trying a few times. Just follow the schematic
And don't forget to connect the ground wire of your 5V power supply with the ground (GND) of your arduino for potential equalisation. Otherwise the LEDs might do what they want but not what you want.