Vidirol: Kickstarter VST demo (hands on)

....

Kickstarter link:

https://www.kickstarter.com/projects/synth-bt/vidirol-control-roland-edirol-video-mixers

Cat Full of Ghosts - XCHGN - video exchange - build notes

Some build notes for the CFOG XCHGN video module

Some personal build notes 

Here is the link to the official CFOG page

https://www.catfullofghosts.xyz/VIDEOXCHGN.html

 

BUILD GUIDE

BOM  

Most of the parts can be 

purchased from mouser

 

 

 

 

 

 

 

 

 

 

 

This video module is Eurorack compatable, though I'll probably use it standalone.

 It's a "dirty"video mixer  that I plan to use to expand my analog video gear.

 

There is a expander module which I might build later. It connects here.

\

pretty sound advice :

Small video mixers are not common so this looks worth a try.

This is described as a "dirty mixer" so I expect it will distort the signals as 

I transition from one channel to the other.

The RCA connectors

DPDT : on-none-on

x 1

SPDT switch x 3

on-off-on

1k pot - linear 

Inductor

+ Inductors, ferric beads, noise reduction methods, etc

 

 a pretty easy build..

The final pic

The XCNGN (exchange) is all about getting more out of vintage analogue gear.

So what does it do?

The main features include:
    - Two x 2:1 switches to add two additional inputs to your video mixer
    - A dirty mixer for creating distortion and disruption as you transition between two video inputs
    - A passive sharpener to heighten the edges of your signal (a classic effect)
    - A loop out/bypass function to switch from direct feedback to feedback with effects instantly

 

The offical manual is here:

MANUAL 

 

https://www.youtube.com/watch?v=IzIS-ter7t8

 

Cat full of Ghosts - Video Equations

These are my personal build notes for the CFOGs Video Equations synth.

Its a video synth that uses mathematics to produce the graphics.

It was designed by Robert Jordan.

The build was quite easy .. just a few hours.

Ed of Elk Elektroniks supplied all the parts so attending the workshops is a easy

way to build them.

Elk Electronics DIY Workshop - Video Equations

But if you don't live close to Wollongong Australia then you can order them online.

CFOGs is based in Melbourne Australia.

+ ETSY shop

+ official BOM and BUILD GUIDE:
    https://github.com/cfoge/Video_EQ

 

Some pics of the virgin PCBs

I like to start with the lowest profile components .. 

in this case the diodes

+ Diodes - Basic Info  

These are 5V zener diodes. There are 14 of them.

Resistors next. Start with the 100ohm ones ... there are 20 of these.

...

I think this is LSD

 

 

IC headers Next

 

...

 

I've installed the 5mHz Crystal and the push button switches. 

+ Crystal Oscillators 

 

The yellow components on the left are Resistor Arrays

+ Resistor Arrays 

..

The jacks on the right are CV inputs.

Add the 2 Caps, the power input jack & the voltage regulators

+ Voltage regulators (series)

Then the BNC connector & 9V battery holder.

The rear of the PCB:

Pots, & LEDs

The finished product

 

The 8pin IC with a "N" is the EPROM

EPROM (erasable programmable read-only memory) is programmable read-only memory (programmable ROM) that can be erased and re-used. 

The KIT was supplied with two. One marked with a N, the other with a P.

N = NTSC

P= Pal

The 16 pined IC on the right is a Analog to Digital converter:

579-MCP3208CIP

The big chip in the centre is a 32-bit microcontroller

P8X32A-D40

https://au.mouser.com/datasheet/2/321/P8X32A_Propeller_Datasheet_v1_4_0_0-1970752.pdf

 

 + Microcontroller Index Page

 

 I'm using a DC 9V supply

Centre -ve

Elk Electronics DIY Workshop - Video Equations

 

Some pics from yesterdays DIY electronics workshop.

https://www.elkelektronik.com.au/ 

 

This was a video synth build  : The Video Equations by Cat Full of ghosts

https://www.catfullofghosts.xyz/

 

The workshop was held in Wollongong , NSW, Australia.

 

All equipment & parts supplied.

 

A very easy build.

I think this is a awesome way to start DIY electronics.

If you have never soldered before, this is for you.

 

LSD ?? - :-)

 

Hako -- awesome desoldering gun !!!

 

Thanks to everyone who attended.

Such a satisfying day.

We all left with a fully functioning synth that we built ourselves.

 

My full build notes are here:

https://djjondent.blogspot.com/2022/08/cat-full-of-ghosts-video-equations.html

The next Electronic Music workshop will I think be held in late Sept in Wollongong ... 

Check with Elk Elektroniks for more details.

Address: Shop 266 Crown St, Wollongong NSW 2500

Thanks for organising this workshop Ed.

We all had a great time.

https://www.elkelektronik.com.au/ 

https://www.facebook.com/elkelektronik/