JonDent - Exploring Electronic Music: bartonmusicalcircuits

Showing posts with label bartonmusicalcircuits. Show all posts

Friday, 14 August 2020

BMC - FM Drum - build notes

BMC25. FM Drum

sTART WITH the lowest profile components ..
usually IC sockets , resistors , etc

These are personal build notes just to help me trouble shoot should I have any probs.

As it turned out, this was a easy build.

cAPS next

the BOM calls for these:
0.002uf 1 Poly box type. ... 2nf or 2000pF
I'm using a 2.2nF cap

0.02uf 1 Poly box type ...20nF or 20000pF
I'm usinh a 22nF cap instead

.01uf 7 cheap ceramic disk....10nF (103)

sWITCHES next ... not sure how the panel and PCB link ??

i decided to install the jacks , switches first.. Then it became apparent the the panel is held to the PCB by the pots.

Solder the pots to the PCB.

Time for the sole LED

Jacks:
IN - tip of the input jack
CV - tip of the CV jack
OUT - tip of the output jack and switch of the CV jack to allow self modulation

Modulation Waveform Selection switch:
MS - Top lug of switch
MC - Center lug of switch
MT - Bottom lug of switch

Output Waveform Selection Switch:
OS - Top lug of switch
OC - Center lug of switch
OT - Bottom lug of switch

For a ground connection, use the center wirepad of whichever power supply you're not using.

Nice !!!

Links
Manual BOM Build notes http://www.bartonmusicalcircuits.com/fmd/

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For more Euro DIY builds click here:
http://djjondent.blogspot.com.au/2017/12/diy-index.html
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Monday, 30 April 2018

Buffered multiples - BMC Eurobuffer

Just built a Barton Musical Circuits Eurobuffer. BMC037. It's a buffered multiple.
Very easy build. Uses a TL047
Build notes and schematics are here:
http://www.bartonmusicalcircuits.com/eurobuffer/

Got me thinking about how they work just in case I wanted to go totally DIY.
MFOS - Music from Outerspace use TL084s instead of TL074s
http://musicfromouterspace.com/index.php?MAINTAB=SYNTHDIY&PROJARG=OLDIESBUTGOODIES/VOLTAGEMIXER/voltagedist1.html

They call their multiple a "Control Voltage Distributor".
The pinout for the TL084 & TL072 are identical

Probably any low offset, high speed opamp will work ....
such as the TL062, TL064, TL072, TL074, TL082, TL084 series

Links
+ BMC website (lots of great stuff here)
+ Muffs

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For more Euro DIY builds click here:
http://djjondent.blogspot.com.au/2017/12/diy-index.html
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Saturday, 17 October 2015

DIY - Eurorack

This page is my index for all Eurorack related DIY.
It includes build notes, hacks, etc

GENERAL
+ Small Euro drum - version 1

Barton Musical Circuits (BMC).
+ BMC 037 - EuroBuffer (Buffered Multiple)
+ BMC - FM Drum - build notes