I love synths and so, I built this. There are three things that can catch my attention: Synthesizers, Amplifiers and free. The other day (Actually it was just Thursday) I was cruising around Make's website when I saw the Deal of the Day was the Loud Objects Noise Toy. I had seen it before but had not cared much for it. I the n saw a Vimeo video on it and was hooked. I quickly ordered it at half-price from Make but I couldn't wait. I saw the had code on the bottom and so, even though I know it wouldn't work, I tried to compile it. IT WORKED! I grabbed my AtTiny Programming Shield and hit Upload. The results were not satisfactory. Then I said to myself: "If it can compile in the Arduino IDE why can't it Upload?" I uploaded the code and tried every Digital Out pin I could find. I finally reached Pins 10 and 11 and had thought that maybe the code worked but the software didn't. I had tried 9 already and knew it outputted on two pins and the only two pins that were PWM pins were 10 and 11. I tried them and it worked!
Here is the result. The names of the codes were kind of misleading so I renamed them but renamed them as .pde files.
If you have Windows or Mac, use Word to open the code. :-)
P.S. You may be wondering why I haven't posted much lately...midterms. :-)
P.P.S. Second picture goes through every part of Arduino plus the shield.
Step 1: Parts to Acquire.
Bunches of jumper wires.
1 Perf board
1 3.5mm female jack (Only if your amp has a male jack. :-))
1 speaker with or without an amp (8ohm, 0.25 watts...you get the idea.)
Male Headers (One row of them will do just fine.)
1 Arduino (Preferably UNO.)
Step 2: MUST ATTACH WIRES...MUST ATTACH WIRES...MUST ATTACH WIRES!
Connect one switch's lead to ground on the Arduino. The other goes to Digital I/O Pin 8.
Do the same for the other except for using Digital 9 for the second switch.
Attach the Jack as shown. If you are using an 8ohm speaker,
Step 3: Test Your Lovely Circuit.
If you have Windows or Mac, use Word to open the code.
Here is the code in which you can try in alphabetical order:
Step 4: Solder.
Then solder from the schematic. Remember. Pin 11 not 10 for highest Ouput Level.
One Lead from switch One goes to Pin 9. On the other switch, connect Lead 1 to Pin 8. Both switch's pin 2s go to Pin 13 on Arduino. (AKA Ground.)
Step 5: Fin.
This is small, compact and easy to play because you only need two buttons and a speaker.