I like drum machines. However they are not always the easiest to build. I wanted one that is:

A. Simple, Yet Powerful-If it uses lots of components then it is too complicated
B. Sound-It's not a a drum machine if it "beeps"
C. Easily Modifiable-If I can't change stuff for improvement it is kind of annoying.

A meticulous internet search wasn't so successful.

Finally, I found this but, even that was a bit un-editable although it was cool. I thought that the samples were a bit small and I for one was not going to rewrite a bunch of samples.

Therefore, I decided to play around with the code and rewrote my own version of it and tweaked it around until I got a sound I liked.

Remember: Make sure you have the Potentiometer on Analog Pin 1 and not Analog Pin Zero. The True Random library uses this wobbly voltage to pick random numbers! MAKE SURE TO FREE UP ANALOG PIN 0!

I drew up a schematic from the code and then made it real.

I know this uses the TX (Digital Pin 1) and RX (Digital Pin Zero) but I had already built a Digital to Analog Converter shield for those pins and was too lazy too build it again.

Step 1: Parts and Stuff.

You Will Need:
8 1K Resistors
8 2K Resistors
1 Potentiometer
1 3-Pin Terminal Block
Male Headers
Arduino Uno
Perf Board/Breadboard
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Why is hat and crash the same?
I don`t understand what the Pot is for. What does it do?
It is used for speed control. The drum sounds slow down/speed up as you turn the pot.
Nice! What resistance is the pot?
It can be any value you want...I used 1Megaohm but 10K, 5K 100K and most other values will work.
Let's hear what it sounds like!
I guess I was too lazy to shoot a video...Better get started...will get back soon.

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Bio: I love building things and taking pictures. If you want me to build something...I'm open to ideas. My motto? "If you want something ... More »
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