Elsker or RAEL and you can set the length you want (or you can use a clock and the length field becomes a multiplier/divider of the clock (nysthi)
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Thank you, all options are interesting.
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Do you want random or programmed? (in terms of the order of short/long gates, not gate length)
If programmed, you can draw in whatever gate pattern you want in ShapeMaster.
It’s not terribly modular of me, but Encore from BiDoo will make any length gate from 1/32nd up to its 64 step pattern length. For making a more “human” part I will often use this one to nudge parts off the clock slightly with the “trim” feature, lets you be early or late in smallish increments. Plus you get 2 more channels of cv, it’s pretty awesome.
I don’t quite understand that. The plus minus buttons set the starting number to count down from. Or do you want to be able to set them via a CV input?
There’s also COUNTDOWN 5 for bigger numbers.
And there’s Voltage Controlled Pulse Divider:
@Yeager - this is a good one
@steve - yup, Shapemaster is one option
@john_rose - through CV
Basically what I want is a module where I can create gate from trigger A to trigger B, or one that crates gate from x sequential triggers. I’m a software engineer so I’m tempted to tip my toe in the rack module development and create the one I’m looking for
Use a Flip flop?
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Doesn’t Flip flop just switch the signal from out A to out B?
I’m looking something that opens the’ gate from the first trigger to input A and then closes it when it receives second trigger to input B
That’s a switch.
Feed your triggers into TRIG, get your gate out of A. If you need more than five volts, scale it with an attenuverter.
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… interesting…
This could be a keeper 
If your triggers come from different sources, use an OR before TRIG in or if using VCV 2.5.1 just stack the input cables.
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If your triggers for starting and ending come from different sources, use a “S/R Flip-flop”, (Set / Reset). The Bogaudio FLIPFLOP is one of them.
D- and T-type FFs have different behaviours. See Flip-flop (electronics) - Wikipedia
Uh - where do you get VCV 2.5.1? I can only find VCV Rack Free 2.4.1.
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On second reading I get a second interpretation of what you are looking for, and maybe this will get you started.
If you plug, say, CV1 into the TEMPO input jack, then you can program in different delays between the steps. Both TRIG and CLK outputs give pulses on each step transition.
If the second and third rows of knobs are all the same, then CV2 and CV3 won’t appear to change, but you can always use CLK or TRIG and maybe a gate modifier to interrupt the outputs of CV2 and CV3. Or set some to zero for spaces between gates. Or don’t, and let multiple steps run uninterrupted for fewer but much longer gates.
It would still work if you have to use a different sequencer and an external clock source. ADDR-SEQ and a stack of ASX would give lots of different steps
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The limitation with elsker and rael is that if I use 1, or larger, in duration field, I basically create gate that is always on. Or is there a way around this?
‘Problem’ with the one is that after the gates has been on, there is equal gate off period because (?) Seq 3 doesn’t provide option to adjust the pule width, of course we can use sequencer that supports it
You can make the pulse width of the out follow incoming clock pulse width in the right click menu.
@john_rose I really like this approach. Although I can’t test it now (not at Rack at the moment), if you run the CV first through a quantiser with only the note C on and then into tempo, it should quantise it to whole volts (-1,0,1,2, etc) creating whole notes, half notes, quarters, eighths,etc.
If you run it through a just intonation quantiser, with C, F and G, you should get dotted notes and triplets as well.
I could of course be talking rubbish, so don’t take my word for it. I’ll test it as soon as I can.
At first I couldn’t see why using note values (quantized or not) would be useful for modifying the tempo. Then I finally figured out that each additional volt applied to the BPM input doubles the tempo. Essentially it’s an octave higher, but you don’t conventionally think of tempo as “notes”.
I can see now how QNT, OCT, and a transposer could make for some interesting polyrhythms between multiple clocks or sequencers. CLKD’s tempo has a range of about 3.3 octave, but SEQ-3 goes to 20 octaves (unless I made a fencepost error there). I’ll have to keep this in mind for the future.
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This may be drifting even further from the original point of this thread, but I finally recalled the name of “Seriously Slow LFO” by Frozen Wasteland.
By using the RESET input to restart the square wave it would effectively trigger the start of a gate. I don’t see any way to make it pause on a 0V output though.
Not long enough? Try this one:
I wonder how they beta-tested the last six time bases.
Finally, there’s the “Seriously Slow EG”.
Use a short attack and plug the ENV into a comparator to square it up.