If the pots are voltage dividers, then they are just sending voltage signals, so couldn't you just input CVs directly? I'm far from an expert, but I thought vactrols were for when you needed voltage controlled resistance specifically. edit: woops, read ersatzplanet's post properly, vactrols are the ...

Love the Necks, looking forward to their annual show in Feb.

Forgot to say that I got mine, they came a week or two ago :mrgreen: Got the refund and everything, thank you so much for organizing this operation! I hope you aren't out of pocket at all. Unfortunately(?) I'm about to go travelling for 5 months so I won't be building anything with these in the near...

Finally built my QuadVCA mixer, it's now the center of my system, thanks L-1!

Also I was able to trim for almost x2 gain without mods.

Got mine, thanks for resending them!

I've got them built and one wired and working, such a ripping FM.

The super thin resistor legs have come in handy putting multiple leads into one hole when doing stripboard

I had the same problem as futuresoundsystems, only adding 5V into the CV wouldn't help. I tried adding parallel resistors to the feedback of the noise section op-amps, but it wouldn't reduce the noise to below 24v p-p on the scope :confused: . I had to add a 22k in series with R30, this reduced the ...

I've build both of my kits, and they both work great! A quick fiddle of the trimmers got it to track the entire range of my midi keyboard well enough to my ears. I would like to add that I LOVE this method of building modules with connectors between the boards. It even inspired me to use them to sta...

Got mine in Australia, cheers!

Another way to center the outputs around 0V is to use an opamp comparator. The opamp will swing from +12V to -12V, follow this with a simple voltage divider to bring it down to +/-5V. This also serves to buffer the outputs of the CMOS chips like daverj suggested. With this scheme, it doesn't matter ...

If I were you I would just run your circuits off 12V and ground. You should be able to patch the signals anywhere you want. If you're really worried about offset and AC coupling, you can put a capacitor in series with an output for audio, around 220nF. Some mixers may already have this on the inputs...

Thanks Rowman.. you're a king amongst men.. ;) On a slightly different subject - would wiring the start switch permanently open (in the AND clock reset circuit) start a standard Baby 10 from step 1? I'm not quite sure what you mean. In the schem you posted above for the start switch, if it's perman...

Paid for 10.

Here is a layout for board 2 where reset holds it to the last step, rather than the first. Basically just a shuffle of the diodes, so that the patterns are shifted forward one step, so the first step for the 4017 becomes the last step in the sequence. Instead of sometimes skipping the first step, bu...

Was I one of those last 5 or 6?

:doh: :doh: :doh: Totally messed up my thinking in my last post. You will definitely be missing the first beat of the sequence sometimes with this switch arrangement. Asthmareport's method will work great as long as the start signal is exactly in time with the clock. If you use a manual switch, the ...

Any thoughts on adding a start/stop switch that reset the 4017 in the off position? So it would be "UP" = start, "DOWN" = stop, reset. You could, but it would be a pain and you would end up with exactly the same behavior you would get by adding Asthmareport's switch circuit to the Beats module. Bas...

I think in sequencers when the logic output for a stage is held up as long as the stage is active it's called a Gate, whereas the clock signal would be considered triggers. If this is what your talking about, then the outputs of the 4017 are gates, but the outputs of the Beats module are triggers si...

Got one of mine going, love it. LOVE IT.

Turning up feedback just before the point of ringing sounds like the ringing of a small acoustic space, I wonder what it sounds like with a few ms of delay in the feedback line...

I changed the layout for board 2, now the outputs are only on when the Clock is high. This fixes the problem of missing the first beat. I did it using diode logic, so I only added a few diodes and resistors, but it's getting pretty cramped with components over the top of other components. The layout...

Ordered, holding off on the panel though.

I'm going to wait for the Clarke panel to go with my 258j 'Dual Analog Oscillator' panel.

Nice idea with the start input Asthmareport, that start switch will be a great addition. If you wire the reset pulse from the start switch (after the gate-to-trigger and inverters) to the switch pin of the reset jack, then you can override the reset function of the switch. This enables you to sync t...

Have you had any problems with starting in sync, missing the first kick, etc? I've heard people saying the baby10 style sequencers miss the first beat because reset takes it back to 1 and when you send it clock, the first thing you hear is beat 2.. Hmm, I guess it depends what you want to do. If yo...

Dubka wrote:So, the TL074 is your onboard clock?

Yeah, it's basically the same as an inverter oscillator. The 10M resistor adds hysteresis to the comparator to make it a schmitt trigger like the 40106.

https://www.muffwiggler.com/forum/userpix/6937_beats_module_1.jpg So I built one. On Tayda stripboard. I decided to buffer the inputs to the 4017 (took the input conditioner from the schematic of the Random Looping Sequencer, thanks Tombola). Buffering clock, reset and hold there was a spare op-amp...