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damj
Joined: Apr 17, 2012
Posts: 4
Location: skattungbyn, sweden
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 Posted: Tue Apr 17, 2012 11:42 am Post subject:
boss dr-110 trig mod |
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I am new here and kind of new with electronics. I am modifying a dr-110 and I want to add both trig in and trig out for each sound.
As I understood it the dr-110 uses s-trig and I want to use normal gate.
The only idea I have figured out is to cut the cable between the analog and digital board for each sound and add a s-trig to v-trig converter between the out jack and the digital board and a v-trig to s-trig converter between the in jack and the analog board.
It doesn´t seem like the smartest solution... I have to build a lot of converters and I need to patch it to use the internal sequencer.
Surly someone here can come up with a better solution |
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richardc64
Joined: Jun 01, 2006
Posts: 577
Location: NYC
Audio files: 25
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roglok
Joined: Aug 28, 2010
Posts: 124
Location: uptown
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| Posted: Thu Apr 19, 2012 12:31 am Post subject:
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Awesome, Richard! I have a DR-110 with a broken CPU board lying around and never managed to trigger the snare properly...
It would be awesome to find a simple way (preferrably analog) to make the timing and amount of clap trigger-bursts adjustable from the front panel - Simmons Clap Trap style...
When I find the time, I'm gonna get back to this and probably rack it up as a euro module... |
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richardc64
Joined: Jun 01, 2006
Posts: 577
Location: NYC
Audio files: 25
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| Posted: Thu Apr 19, 2012 8:45 am Post subject:
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| roglok wrote: | | Awesome, Richard! I have a DR-110 with a broken CPU board lying around and never managed to trigger the snare properly... |
One thing...the external triggers should be of similar duration to the original: 1mS to no longer than 5mS or so. As the trigger gets longer, the inherent "thump" of the one-transistor VCAs becomes more noticeable. Also, the ringing, damped oscillators of the Snare shell and Bass will trigger on a falling or rising edge. Make the trigger(s) too long and you'll get two sounds per trigger, instead of only one -- which now that I think of it might be useful!
To ensure that external triggers produce short pulses you could put a cap before the 4069 input, selecting the value for that and the pull down resistor to produce a suitable duration. I use this: http://hughestech.com/rc_calculator/
| Quote: | | It would be awesome to find a simple way (preferrably analog) to make the timing and amount of clap trigger-bursts adjustable from the front panel - Simmons Clap Trap style... |
Umm...I have an idea that would do that, but don't want to say anymore until I actually try it -- and there's no telling when THAT would be. Maybe saying that it would use a CD4538 dual retriggerable monostable multivibrator and a gated schmitt oscillator is enough of a hint for someone else to try it.
_________________
"It's quite OK to make music with tea spoons and rubber bands!" -- Blue Hell |
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damj
Joined: Apr 17, 2012
Posts: 4
Location: skattungbyn, sweden
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| Posted: Thu Apr 19, 2012 1:58 pm Post subject:
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| Thank you Richard, it does not look to difficult, I think (hope) I can get it to work... |
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roglok
Joined: Aug 28, 2010
Posts: 124
Location: uptown
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| Posted: Thu Apr 19, 2012 2:31 pm Post subject:
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| Quote: | | Also, the ringing, damped oscillators of the Snare shell and Bass will trigger on a falling or rising edge. |
Right! I remember this from the 808 BD clone. The triggers from my 606 would retrigger the kick, because they have a small negative peak after the initial falling edge...
I got the fix from Eric Archer's page, which is basically the same as your suggestion:
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