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DR-55 Clone - Circuitbenders.uk CB55
MUFF WIGGLER Forum Index -> Music Tech DIY Goto page 1, 2, 3, 4, 5, 6  Next [all]
Author DR-55 Clone - Circuitbenders.uk CB55
netpusher
I don't know if anyone has seen this DR55 clone PCB yet. I ordered one tonight. Maybe someone can do a panel for eurorack on it? (greyscale wink, hint hint..) Assuming it would fit of course..

Some text from the circuitbenders site:

The circuitbenders.co.uk CB55 is an exact clone of the voice board of the Boss DR55 drum machine. It has the four fully analogue percussion sounds, bass drum, hat, snare, and rimshot, but leaves out the clunky and arguably useless sequencer. There is also an overall accent feature that adds a little extra punch to the whole mix when it is triggered.

http://www.circuitbenders.co.uk/forsale/CB55/CB55.html
thetwlo
nice find! although, part of the charm and all, includes the seq. easily replaced without that.
snaper
Nice!
I've already started to stripboard the BD and the RIM, but now its much more easier.
Could you tell meg size of the PCB?
netpusher
snaper wrote:
Nice!
I've already started to stripboard the BD and the RIM, but now its much more easier.
Could you tell meg size of the PCB?


I'll measure it once I get the pcb
snaper
netpusher wrote:
snaper wrote:
Nice!
I've already started to stripboard the BD and the RIM, but now its much more easier.
Could you tell meg size of the PCB?


I'll measure it once I get the pcb

Thanks,

I've checked the site, but there is no info about it:S
gianni
on their facebook page they say its 139 x 72 mm, so you would have to mount it perpendicular to the panel
thetwlo
seems excessive and quite different
flts
this looks cool and cheap enough to build at some point. have to agree with thetwlo though that the (simple stupid) sequencer is part of the charm. on the other hand, dr55 sounds with a simple grid sequencer could be fun as well.
Isaiah
I've ordered one.
Actually, it's my second DR-55 clone PCB. The first is a Non-Linear Circuits Dr GoGo.

Mounting the PCB parallel to the panel would require 28HP,
but that affords plenty of space for mods.
I might have a go at producing a panel...
qfactor
I've been building this :http://www.bartonmusicalcircuits.com/M2G/ (MIDI to Gate converter) by Michael Barton and came across this thread and was thinking these 2 PCBs might work well together??
nanners nanners
snaper
Toooo big board :S
falafelbiels
I actually want the sequencer more...

Still a nice board and cool sounds!
Barcode
You really can't beat 4 drum voices for £10. Even if it doesn't have the sequencer.
flts
^- 10 pounds plus the actual parts of course. but i'd be inclined to agree, it's an extremely good deal. the dr55 voices are quite fun as well!
Barnetric
Cool board. Would be nice to see a trigger sequencer (with same A/B and rotating memory select) as it's own project
NS4W
Kool!
Barcode
After reading over the build docs and seeing the easy ability for individual outs and being able to trigger if from just about anything, I broke down and bought one of these. thumbs up
cane creek
At £11.50 all in it was rude not to thumbs up
johnnymayer
these are absolutely awesome.

it definitely has a TON of possible mods for it, decays, pitch, etc.

and that's where a 28hp size would come in quite handy.

i'm excited to see some euro versions of these!

who's gonna design the eurorack panel for it?!
Isaiah
johnnymayer
I might give it a go, but I've got other things on my plate at the moment.

My initial thoughts:
*Switch for each trigger input to 'mute' each drum voice individually.
*BD - Tune, Decay
*SD - Noise level, maybe Tune and Decay.
*RS - Tune.
*HH - Noise level.

When I opened my DR-55 a few years ago, I tweaked the Noise level trim.
If my memory serves me, it allows nice variations of the HH and SD voices.
cane creek
Isaiah wrote:
johnnymayer
My initial thoughts:
*Switch for each trigger input to 'mute' each drum voice individually.
*BD - Tune, Decay
*SD - Noise level, maybe Tune and Decay.
*RS - Tune.
*HH - Noise level.


I'm liking it thumbs up
bartleby
Isaiah wrote:

*Switch for each trigger input to 'mute' each drum voice individually.
*BD - Tune, Decay
*SD - Noise level, maybe Tune and Decay.
*RS - Tune.
*HH - Noise level.

and don't forget hh decay!
(if that's doable - i don't know a thing about this circuit)
Barcode
I started a thread on the forums over Circuitbenders about mods....

http://www.circuitbenders.co.uk/forum/index.php/topic,2421.msg14711.ht ml#msg14711

These are the mods I've come across so far.

Bass Drum Decay - Replace R33 with a ___ Pot

Bass Drum Pitch - Replace R31 with a ___ Pot

Snare Drum Decay - Replace R52 with a ___ Pot

Snare Drum Pitch - Replace R50 with a ___ Pot

Snare Drum Noise Level - Replace R57 with a ___ Pot

Rimshot Decay - Replace R45 with a ___ Pot

Rimshot Pitch - Replace R43 with a ___ Pot

HiHat Decay - ?

HiHat Pitch - ?

HiHat Noise Level - Replace R69 with a ___ Pot

I still need to figure out the values for the pots. Once my PCB comes in I'll get working on that.
mechie
I butchered a DR-55 to make something similar to this some years ago.
It makes a fair companion to my MFB sequencer.
Original PCB got chopped in half to dump the sequencer circuit.


Had to add some amps to get signals up to synth levels

Gives separate outputs for each sound as well as original mix.
It's the deepest module in my system, just fits in a Doepfer G6 case!

Variable:-
BD Decay and Volume
Snare Decay, Volume and Noise Volume
RS Decay and Volume
HH Volume
Mix Tone

Trigs in for each:-
BD, SD, RS, HH and Tom

Outputs for:-
BD, SD, RS, HH, Noise source and Mix

I wanted to make pitch of drums adjustable but it's a bit tricky on a tuned circuit - ganged pots?
thorncore
cool...i asked S-cat to share their mod findings but they stuck their tongue out at me so hopefully we can get some sorted on Muffs...

mechie that build is applause
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