Showing posts with label DIY. Show all posts
Showing posts with label DIY. Show all posts

Saturday, 2 December 2017

DIY index

This is the index for all DIY projects.

General Electronics
+ LCD display i2c - part 1  
+ LFOs - making simple LFOs using a CD 40106 IC
+ Microcontroller... What you need to program a MCU 
+ Microcontrollers... Programmers
+ Sequencer CD 4017 
 + Simple oscillators & LFOs using a CD 40106 IC
+ OTAs - operational transconductance amplifiers
Panel, making using gerber files
+ Switches - Momentary push buttons & Pull down resistors   
+ TKB - Serge Build notes (Human Comparator)

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+ 3 Trins Video synth
+ The Ship of Thesus
+ Adding anchor links in Google blog

ARP 2600 - TTSH

Balanced vs Unbalanced Audio

Buchla
 
Cat Full Of Ghosts
 


Ciat Lonbarde
 + Gerassic Organ

CMOS
+ Sequencer CD 4017 
+ Simple oscillators & LFOs using a CD 40106 IC

Eurorack

 + Adding +5V  to your Bus.
 + Distribution  - power bus

Elmyra Synth 
   + Build notes


Fates 
+ Fates - a DIY Norms for Rasberry Pi

 Influential ICs

Jasper - Wasp
+ Build notes for the jasper - Part 1
+ Jasper build notes - Part 2
+ Midi interface

Lorre Mill
  + U Tone

LZX - Cadet
 + Cadet I - Video Sync Generator - Build notes
 + Cadet II - RGB Encoder - Build notes
 + Cadet III - Video input - build notes
 + Cadet IV - Dual Ramp generator - build notes
 + Cadet V - Scaler - build notes
 + Cadet VI - Fader - Build notes
 + Cadet VII - Processor -Build notes
 + Cadet VIII - Hard Key Generator - build notes
 + Cadet IX - VCO - build notes
 + Cadet X - Multiplier - Build notes

LZX - Castle
Introduction
00_000 ADC - Analog to digital converter
01_001 DAC - Digital to Analog converter
02_010 Clock VCO
03_011 Shift Register
04_100 Multi Gate
05_101 Quad Gate
06_110 Counter
07_111 Flip flops


Microcontrollers
+ Microcontroller Index Page

NLC
Full list of (NLC) NonlinearCircuits projects

PSU  juice for your synths
 + NLC large board - build notes
 + NLC small board - build notes  
 + BOSS ACA vs PSA Psu (Power supplies)


+ Resistor Arrays
+ Serge - CGS - Buchla

+ Shopping for components
+ Soma - Lyra 8 build
+ Synth Lab (SDIY)
+ Synthacon - Steiner-parker

Python
+ Python for beginners 1
+ Python for Beginners 2

Soma Lab
 + Lyra 8 build - part 1 
 + Lyra 8 Part 2
 + Lyra 8 Part 3 is here
 + Making the Lyra Panel face plate
 

Thermin
+ Thermin - Silicon Chip general info

Vidiffektor - build notes

Wirehead Freaq FM

Wasp - Jasper
+ Build notes for the jasper - Part 1
+ Jasper build notes - Part 2

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+List of integrated circuit dimensions
+Surface Mount Nomenclature & Packaging.
+SOT (Small Outline Transistor dimensions)
+Voltage divider, LED resistor calculator 
+SMD / SMT resistor code
+Desoldering tips - Belltone 

 

 "The man that hath no music in himself,
Nor is not mov'd with concord of sweet sounds,
Is fit for treasons, stratagems, and spoils."
- The Merchant of Venice (V, i, 83-85)

 

Thursday, 30 November 2017

CellF Action - Build notes

Finally getting around to this.
Andrew put these out in 2015 (along with the CellF Voice).
Andrew's build notes are here:
http://www.sdiy.org/pinky/data/cellF%20action%20BOM%20&%20build.pdf

A big-ish build I think.

Some closeups of the PCB to help with later troubleshooting.
Right of PCB

Centre PCB

Left PCB

The Action panel uses three NJM13700
https://www.njr.com/semicon/PDF/NJM13600_NJM13700_E.pdf
They are current controlled transconductance amplifiers.
I'm using the same components I used on the cluster build


ICs:
I'm using sizes SOIC-14/16, SOP-16
SOIC = Small Outline IC
SOP = Small Outline Package 

"A Small Outline Integrated Circuit (SOIC) is a surface-mounted integrated circuit (IC) package which occupies an area about 30 to 50 % less than an equivalent dual in-line package (DIP), with a typical thickness that is 70 % less. They are generally available in the same pin-outs as their counterpart DIP ICs. The convention for naming the package is SOIC or SO followed by the number of pins. For example, a 14-pin 4011 would be housed in an SOIC-14 or SO-14 package."
(Wikipedia)
 There are 5 fixes needed to the slew of the logic module.
 

 I added the 47K resistor to the underside of the PCB

gETTING there. Just waiting on some components from Mouser.
This is a big build.
ICs and most of the SMD passives are in.


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Having trouble sourcing the TLP291-4 - quad opto-coupler package. ?? Mouser no
I'm trying these:
https://au.rs-online.com/web/p/optocouplers/6936807/

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LED resistors.
I'm using 1.5K resistors for the RL components.
Andrew's build notes for the Cell F Voice panel said:
For regular LEDs use RL = 330Ω-470Ω
forultra/superbrights use RL = 4k7Ω-10kΩ

I may have to change this once I get the board up and running.
Easy enough to do with SMD .


 

Time for the pots and jacks
 Notice the height of the jacks. The switch is taller than usual and this is forcing me to raise the level of the jacks & pots.
 Soldering the pots was a tad tricky. 



You will need 4 of these JFETs


These are the 1K tempcos draped over transistors in QUO and VCO sections




fINAL pics.





Links:
+ NLC Build notes for Cell F Action panel
+ Build notes for Cell F voice

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Tuesday, 28 November 2017

Brain Custard - NLC Build notes

My notes for the Nonlinearcircuits Brain Custard Eurorack module.
This version of the module will be for audio rates, but you can also build this to produce CVs.



It's kind of like the Jerk Off module in that it uses chaotic oscillators.
The Brain Custard has "9 audio rate chaotic signals mixed to form 'neuron clusters'
The idea is that the low frequency patterns will emerge from the mayhem.
Really it will be vaguely controllable noise and lots of it.....with LEDs."

No rare or hard to source parts. Yah !!!
Just four TL074s & one TL072
Mostly SMD passives.
"c" = 100K
"1" = 1K


For the Audio version install all eighteen 10K resistors.

For the CV version six of the 10k resistors need to be replaced with 47k resistors
You will also need to Replace the 47nF (473), three of the 100nF(104)(see pic) and the 220nF (224) capacitors with 1uF capacitors

 
Some very good advice. :-)

I like to install the ICs first.



"Inputs can be anything; audio, gates, triggers or CV. Depending upon the pot settings, the input signals may do a lot or do little. The X, Y & Z outputs are mixes from the same stages of different oscillators, consider them minor Σ (sum) neurons. Custard is just everything jammed in together, so the main output neuron. Blend is the X, Y & Z outputs mixed together via the Blend pots, these pots have +/-1 gain, meaning when the pot is at 0 the signal is inverted and if the pot is at its mid-point the signal is off."


Links
+ NLC Build notes
+ NLC Blog


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Click here to return to the NLC Build Index:
http://djjondent.blogspot.com.au/2015/03/non-linear-circuits-ncl-index.html  

Monday, 27 November 2017

CEM3340 VCO - NLC - Build notes

These are my build notes for the CEM3340 VCO module. It's a  Nonlinearcircuit eurorack module using the CEM3340.

The CEM3340 is a completely self contained VCO on a single chip.


It featured 4 waveforms : triangle, pulse, square & sawtooth (though they are at different levels). The VCO is extremely stable eliminating the need for a temperature compensation tempco resistor.
The CEM3340 is extremely unusual in that it offers both Hard and Soft Sync inputs (pin 6 and pin 9).

It has featured in many famous synths of yesteryear including Roland's Super Jupiter MKS-80 & SH101, Sequential's Prophet 5.3, The ProOne, the OB-Xa & Prophet T8 and Moog's Memorymoog,

sOME nlc words of wisdom









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There are 3 trimpots:
10k trimpot 10 turn - Tadya A-586
20K single turn - A 2504
100K single turn  A 2506
I only had the 20K on hand so used some non tayda pots for the rest. I'll see how this goes.
Might have to replace them in the future.

There are 10 X B100k linear pots .


 Mount the switch, jacks & posts loosely, then solder after securing into place with the panel
This is what the rear looks like.


Another happy customer.

Links:
* CEM 3340 data sheet
* NLC Build notes 
* Electric Druid - VCO designs
* gear junkies - Update about the new Curtis CEM 3340
* NLC Blog

To be continued.....

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Click here to return to the NLC Build Index:
http://djjondent.blogspot.com.au/2015/03/non-linear-circuits-ncl-index.html  

NLC - Envelope follower - build notes


These are my build notes for the NLC - nonlinearcircuit Envelope follower. It's a eurorack module but it's design was based on the Envelope Detector of the Buchla 208 (Music Easel).

The 208 has a a hi/lo switch. Andrew has substituted a gain pot.
The NLC version also has a additional comparator stage to give a gate output.
The NLC build notes are here:
http://www.sdiy.org/pinky/data/ENV%20follower.pdf

The module uses just two op-amps (TL 072)


I mixed the 101 (100pF) and 2M2. - it does not matter as they are in parallel anyway.

The BOM requires:
a S1JL rectifier
Mouser No: 821-S1JL.
There is a long waiting list for this.
A replacement is  Mouser Part No: 583-FM4005-T.
The rectifier is polarized. The cathode end is marked with a band. 
This replacement is slightly too big for the PCB. so i had to solder it on its side.

NLC words of wisdom
I think what I do is positive. in its own way. GG Allin


Jacks, pots, LED

tHE Envelope Follower is ideal for instruments at line level such as guitars, mics and Buchla audio signals.
Synth levels (eg Eurorack) can be a bit hot.
Turning the gain to zero and a input from a VCO seems to trigger the envelope and gate quite well
and doesn't seem to harm the module.
However, I think an additional attenuator in the signal path will give more control over the envelopes produced.

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Click here to return to the NLC Build Index:
http://djjondent.blogspot.com.au/2015/03/non-linear-circuits-ncl-index.html