Repurposing a NES controller? (Page 2) - Circuit Bending - Forums

17 Mar 5, 2015 4:25 am

Offline

Michigan

Here are some quick calculations for the resistors in series.

In this photo,
R1 = 10000
R3 = 32,588
R4 = 8,190
etc...
C2 = 10nF
R1 = 10000

The calculations are rough, so the freq does move around about 1 hz either direction, but the duty cycle stays pretty close to 50%.

Last edited by Jazzmarazz (Mar 5, 2015 4:26 am)

18 Mar 5, 2015 4:37 am

RatShack

Offline

Philly

Here's a 555 based circuit. There's a 30 minute video explaining how it works as well.

http://hackaday.com/2014/12/14/sqonkbox … ore-140610

Last edited by RatShack (Mar 5, 2015 4:41 am)

So I finally got around to working on this project and I've built my first prototype. I call it the Noise Entertainment System and it is basically the toy organ circuit with a light sensitive photocell to control the overall pitch. The buttons are not tuned to any scale, just random notes that change depending on light conditions.

I have a lot of little changes that I want to make to the next version:

Brighter leds underneath the Nintendo logo
Smaller switch
Smaller jack?
More resistance between each button to make the pitch change more noticeable between buttons
Overall neatness improved upon

I also want to add a LFO circuit to the next version that I make, though it was quite a challenge fitting all the components inside the tiny controller...

Here it is: