ChipMusic.org - Circuit Bending

Re-route link cable signal?

2021-08-14T06:38:42Z

Hi!

I'm putting together a setup using a MIDI clock sync, into an arduinoboy, then to DMG running Nanoloop Mono.

I was wondering if I could attach a TRRS jack to the DMG case, and solder 4 wires to the relevant pads at the link port's spot on the PCB (Clock, In, Out, Ground) and attach a custom made TRRS to link cable using the half of the link cable I chopped to make the 5DIN to link cable for the arduinoboy

Then I could sync my MS-1's MIDI clock to Nanoloop Mono, and LSDJ - portable acid party.

Any thoughts would be appreciated.

Cheers!

Original idea was to tap into clock signal from Nanoloop/LSDJ to sync MS-1 (ext clk in) but they both produce very fast click rates that make the MS-1's sequencer run like the clappers even at 40 BPM, 1 tick per step.

Om-27 Omnichord Strumplate

2020-11-11T21:30:20Z

Need some help. I found an omnichord. It works as it is supposed to. Before I circuit bend it, Does anyone know how to retrofit a newer strumplate on to the oldest kind of omnichord? I read somewhere it can be done.

Circuit Bending the NEC D930G chip

2020-10-23T08:37:30Z

I am trying to do some circuit bending on the NEC D930G chip, but I am trying to work out how the pins are numbered. Can anyone help?

Thanks

Stuart

Stutter Switch?? help

2020-02-13T16:55:32Z

i've recently been getting into circuit bending, and have kept wondering how i would add a stutter switch like some i've seen. Thinking about it kind of made my brain hurt as 13 year olds don't have a lot of those : ) some ideas i have are: 1. maybe just a momentary SPDT toggle switch, 2. an adjustable LFO that times the button pushes but the delay between pulses are controlled by a potentiometer, 3. maybe just an Arduino nano using the PWM pins with a pot doing the same thing. You also might be able to achieve the 2nd idea by using a 555 timer, which might just be my best bet.

Can't find the pitch resistor - Newbie in need of some advice

2020-01-23T17:50:16Z

Hey guys!

I'm new to this forum, and super new to this whole world of modding stuff (and new to electronics in general). My only achievment so far
has been to add a pitch bend to a very simple toy synth. I had no problem in finding the pitch resistor on that one, by licking my finger
and poking around a little bit.

I am now trying to do the same thing on another, a little bit more advanced synth, but with no luck!
I'm using the same method of finding it, and I've been going over the board a lot of times. The synth is called "Music time keyboard 310".
Below you can see a photo of the circuit board. I'll gladly take more photos if needed!

I'm thinking that maybe some of you guys see something that I'm missing, or maybe point me in another direction:)
Cheers!

Bend Points Active Even When Not Physically Touching

2020-01-18T20:38:49Z

I found an interesting bend in a children's toy, and then realized that it still works even when the leads are just close to each other, but not physically touching. In fact, the sound is a bit different that way from when it's a physical connection. Has anyone run into something like this? I have no idea what could be causing it. Some kind of electromagnetic interference, maybe?

It creates a great sound, though, so I'm trying to figure out how to include it in the project and be able to control it in a more predictable way. Since I can't use a toggle (the two bend points wouldn't be far enough away), I was thinking I could use a couple of RCA jacks with some distance between them and just patch it, although I'm not sure that would work. Is there a better way to handle this kind of thing?

How can I add a pitch control to a Casio tone bank ms 120?

2020-01-16T15:04:16Z

So I've come to an understanding that not all keyboards have a golden 'pitch resistor'. (and possibly learnt the hard way) so I was wondering how can I control the pitch of this keyboard?
(picture of the circuit)
My question may be a little basic so my apologies. I'm fairly new to circuit bending. (:

Power LED Blocks Audio in Bent Book Strip

2020-01-12T06:29:33Z

I'm bending a small book strip and I'm trying to add a power switch with an LED to show the unit is turned on. The power switch seems to be working fine, but when I test the LED in line, it cuts all audio from the unit. The LED does light up when the unit is powered on, though. I've tried placing it in several different points on the circuit and it does the same thing every time. Does anyone know why it would block audio like that? Is there a different way you're supposed to wire up a power LED that I'm not aware of? Any help would be greatly appreciated!

Casio Pt-80 to midi drum machine?

2019-11-21T01:25:25Z

I have a bent casio pt-80. Makes great drum sounds. I want to find a way to midify the drums. Just some midi notes that trigger a drum sound. I got a midi input mod board (UMR2 clone) for an sk-1. That got me thinking about this. I dont think that I can use the UMR2 board for this cause it is designed and programmed to use a keyboard matrix, or maybe the buttons that pick a drum pattern. I want to control these drums with a daw via midi. So, I have to figure out how this machine makes the drums. Says they are analog, so I'm hoping for individual circuits for each sound that I can trigger and maybe have seperate outputs. I'm going to get a cheap oscilloscope and start trying to find these signals. But then I probably need an arduino or teensy type controller to take midi notes and make analog signals to trigger the drum sounds.
It would also be super cool to have midi cc controlled switches and pots. To control the bends via midi.
I'm in over my head.
Any help would be great. Ideas welcomed. Hints,tips, and any advice please.

Can I bend this? (casio ctk411)

2018-03-27T23:31:29Z

Hello to all

Newbie here.

I found a casio ctk411 synth and wanted to know if I can circuitbend it.

Why I'm not attacking it right away is because this one has a MIDI in/out and I'm controlling it with external MIDI controller.

I am actually a little bit affraid, because I haven't seen anybody on the internet circuitbending this model.

A lot of circuitbended casio ctk330, but that one doesn't have the MIDI connections.

So what do you think, should I ?

Thank you for your answers

Shake to trig function? [sort of like Boxed Mercury Ball/Tilt Switch]

2017-03-01T01:08:07Z

I am bending a little toy and when shaking I will make it glitch the pitch. A glitch maracas.

It has a small container inside perfect for making some tilt switch, but I have not succeeded making it work satisfying.

I have among other things tried to put aluminum foil inside, four touch points, bolts and screws, but it does not trigger well.

So do you have any experience with this and if so how should I do it? I have seen that there is a solution with a "boxed mercury ball".

Favorite things you've circuit bent

2017-03-01T00:48:55Z

Hey!
Just like the title says, what are some favorite things you've bent?

I haven't done anything yet but want to start. I have Casio ca-100 I'm eventually going to try, and I'll probably buy a speak-and-something since they're cheap and there's plenty of guides for them. I can't find much information about my Casio though.

Casiotone CT310 locking switches question

2016-12-28T15:13:08Z

OK
I got this nice Casiotone from a friend of mine (although I have some others from this family - like MT100), This one have fullsize keys, thus it's much more playable for me.
I'm planning to modify it. It has only 6 locking switches for sounds (12 tone presets at all)
I'd like to add all possible sounds to it, so I need matrix of 10 locking switches turning each other off.
I need to disconnect other switches by turning one switch on.
Has anyone some experiences, how to do this?
Thanks

The Papernoise Concertodrone (bent SK-1)

2016-12-15T13:45:20Z

This is actually not a new project but I realized that I never posted about it here. All the more it's a good time to write about it, since I'm almost done with writing down the documentation for the project, which I'll soon release as a free PDF and which will contain some info on how I made it.
In the meantime, if you're interested, you can check this video, I made some time ago:

https://www.youtube.com/watch?v=0wnPITTejyo

And this impro track: https://soundcloud.com/papernoise/kurod … sk-1-impro

How can I KILL the drums in a yamaha pss-80?

2016-11-13T03:53:37Z

I want to get rid of the drums and have only the notes sounding. I saw how to kill the beep that happens when you push a button. That makes this way better. If I could switch off the drums when using the note sequencer this would rule pushed through some dirt into a filter. Github has a file with some YM3427 info, but I'm not informed enough to know if the info I want is in there or not...