Magic wand for analog synthesizer

DIY STUFF
1

Hello there !
I wished to share with you all my late project of CV control for my DIY synth : The Magic Wand.

Here is a 2min demo :

https://youtu.be/3WRPDT9JLHs

Since LMNC was my 1st step into the diy modular stuff, I had to post something for the community.
This is a 3 LED stack in a 25cm pipe that can flash a LDR (in the small white box on right hand side in the picture below).
This R change is read by a circuit to convert it as a 0-10V CV. In the video, that CV controls cut off frequency of MS20 LPF clone, and 2 of the 3 stages of my wavefolder.
This is a really nice way to had feelings in your modulations when playing, like a hand controled whawha.
I will post the schematics as soon as I can.
Hope you enjoy !

wand_IMG_20210329_132957
wand_IMG_20210329_1329571944×2592 1.15 MB

Analog_IMG_20210329_125454
Analog_IMG_20210329_1254542592×1944 1.75 MB

3 Likes
2

Here are the schematics to read the LDR change :

Schematic_Magic wand_2021-03-29
Schematic_Magic wand_2021-03-291169×827 47.1 KB

1 Like
3

Welcome here :slight_smile:

Fun idea, for the circuit @EddyBergman had do a interresting module with LDR too

2 Likes
4

Hey, nice call ! I used some of the schematics on this amazing web site, didn’t noticed that one, thanks !

1 Like
5

BergmaN used a scion 5537 ldr light resistance is 20-45k and dark resistance is 2 meg

1 Like
6

what is your led array wrapped in for a wand? Love it , yes will build defintiely

7

They are wrapped in an aluminium pipe from an old shelf, about 1.2cm in diameter.
You can fix the LED string inside by drilling a small hole at about 2cm of the tip of the wand and running a leg of a LED through it. Then you can fix it with tape or glue, then solder one of the 2 wires to it for power.
Sorry for the delay, I’m glad to see that someone likes it !

1 Like
8

Seems a bit safer than this one:

2 Likes