DDSR (/ClockBox Frame) Bus switches

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BugBrand
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DDSR (/ClockBox Frame) Bus switches

Post by BugBrand » Fri Jul 13, 2018 7:54 am

I've had a number of queries about these - partly as I haven't yet done an instruction sheet.

Both the DDSR and the Quad Divider will have Bus routing options which will allow the Dual Clock Oscillator to directly drive them without patching.

There are 2pin headers, which carry full range 0 to +10V pulse waves from the DualClockOsc (DCO?! Dunno if that's a confusing name..)

This twin signal cable is received on the DDSR and QDiv modules, then there are also then 3pin headers so you can select by jumper which clock goes to the respective bus switch. As standard I will probably be setting Left to Clk1 and Right to Clk2.


Now, I did a few Chirpers with DDSRs and it struck me that I could probably wire up the bus routing - actually it was a little involved because the +/-5V osc outputs are NOT enough to clock via the bus input (they DO clock via the regular clock inputs though because these pass through input comparators)

I will at some point before too long post a picture of how and where to do the rear wiring for this - you need to add diodes and wire - not massively complex but at little bit...


If this is unclear (likely!) then ask questions!
Last edited by BugBrand on Fri Jul 13, 2018 8:52 am, edited 1 time in total.

k_bntzn
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Post by k_bntzn » Fri Jul 13, 2018 8:00 am

Keepin it modular for now. :lol:

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chrisdermo
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Post by chrisdermo » Fri Jul 13, 2018 8:54 am

Seriously looking forward to those other modules :tu:
particularly the divider - keep finding myself wanting to have things at half and quarter speed but unable to do so. Have been trying to use the rev1 weevil as a triple clock provider but getting the sync spots just right can prove quite difficult especially at faster speeds. Maybe I need to go the other way and try use the envelopes with attack-only to divide rather than squarewave syncs to produce multiplications
Last edited by chrisdermo on Sat Jul 14, 2018 1:51 am, edited 1 time in total.
WTB / WTTF: Bugbrand PRC2B, DD3, PRC4, ENV1

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Post by ninGiaBoom » Sat Jul 14, 2018 1:14 am

sungja wrote:Keepin it modular for now. :lol:
"Phhheeeew" says my bank account :hihi:

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BugBrand
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Post by BugBrand » Tue Oct 02, 2018 5:42 am

Here are some pics of how to take Bus-Clock from the Chirper to modules like the DDSR:::

Image

Image

Image

Image

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rico loverde
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Post by rico loverde » Tue Oct 02, 2018 7:28 am

Are the diodes 1n4148’s?
works for Darkplace Manufacturing

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BugBrand
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Post by BugBrand » Tue Oct 02, 2018 7:47 am

rico loverde wrote:Are the diodes 1n4148’s?
Yes - bog standard silicon signal diodes.
(sorry, super minimal post above!)

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DickMarker
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Re: DDSR (/ClockBox Frame) Bus switches

Post by DickMarker » Wed Oct 14, 2020 7:01 pm

Just wanted to bump this as I've just recently connected the Chirper's oscillators to the DDSR buses as shown in the above pics^^^
Really cool having the two linked up and ready to talk at the flick of a switch, highly recommended procedure!

castano
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Re: DDSR (/ClockBox Frame) Bus switches

Post by castano » Wed Oct 14, 2020 9:41 pm

I’ve been wanting to do this mod, but have no soldering experience, till I find someone :)

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Re: DDSR (/ClockBox Frame) Bus switches

Post by northerntao » Thu Oct 15, 2020 12:51 am

I haven’t looked at the back of my DDSR, but does it already have the necessary header? Is that the box that connects to the Bus in the DDSR block diagram?

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DickMarker
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Re: DDSR (/ClockBox Frame) Bus switches

Post by DickMarker » Thu Oct 15, 2020 4:49 am

northerntao wrote:
Thu Oct 15, 2020 12:51 am
I haven’t looked at the back of my DDSR, but does it already have the necessary header? Is that the box that connects to the Bus in the DDSR block diagram?
I believe it should have, right next to the jumper switch.

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Re: DDSR (/ClockBox Frame) Bus switches

Post by BugBrand » Thu Oct 15, 2020 4:56 am

Yes, the header is two way - it can carry two different clocks and then you have a jumper on each Shift-reg side to select either clock 1 or 2.
So perfect to connect the two Chirper signals - then use the jumpers to select which Chirp-Osc clocks which side of the DDSR.
(stupidly this approach is slightly different on the Dual Divide - that has one clock line and one reset line...)

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Re: DDSR (/ClockBox Frame) Bus switches

Post by northerntao » Thu Oct 15, 2020 10:40 am

I just realized this post was from a couple of years ago! This looks really cool, being able to clock it without having to sacrifice an envelope or use an external source. I may have to pick up a Chirper if I see one used. I’m a bit ham fisted when it comes to soldering SMT stuff, but this looks pretty easy.

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DickMarker
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Re: DDSR (/ClockBox Frame) Bus switches

Post by DickMarker » Thu Oct 15, 2020 10:45 am

northerntao wrote:
Thu Oct 15, 2020 10:40 am
I just realized this post was from a couple of years ago! This looks really cool, being able to clock it without having to sacrifice an envelope or use an external source. I may have to pick up a Chirper if I see one used. I’m a bit ham fisted when it comes to soldering SMT stuff, but this looks pretty easy.
I know what you mean about SMT but this really is an easy job. Did it in a couple of minutes.

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Re: DDSR (/ClockBox Frame) Bus switches

Post by BananaPlug » Thu Oct 15, 2020 11:41 am

This seems like a good place to ask about the two 2pin headers on the back of the Dual Divider. Marked "Clk" on the silkscreen. Ins? Outs? How do they interact with the Bus/Ext switch?
(Sounds)--> :eek:
Misconstrued comments taken out of context may offend some readers

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Re: DDSR (/ClockBox Frame) Bus switches

Post by BugBrand » Thu Oct 15, 2020 12:29 pm

DDiv actually says Clk on one side (pin1) and Rst on the other (pin2) - both inputs.
Clk goes via the panel switch
Rst diode-sums to the reset in & button - thinking was for a global reset bus for example.

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