Is it possible to sync Teenage Engineering pockets to the Analog Keys?
What’s the best method?
Use a CV output and set up a low voltage click using a variety of methods - if it works like Korg/Arturia ‘sync’ stuff then it’ll work fine
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It seems to use the same cables as the Korg units.
What are the methods? Just to save me time.
Thank you
Standard minijack cable + stereo jack adaptator should work. I have 3 PO but didn’t try this. The clocks is every 1/8th IIRC.
Try first! 
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From memory - there may be a few steps for which you’ll need to hit the manual :
If you don’t have a TRS to dual TS splitter like the Elektron CV kit then just set up one side of each CV’pair’
AB is Tip Ring iirc
So set B to ground - this means you can use a regular mono jack that will need to be transformed by whatever means you have to 3.5mm mono
Set A to value lin and set its range to 0v up to 1.5v
Now set an Envelope with instant attack and a fast decay , no sustain with destination set to Value A - set the depth to Max
and wherever you place a trigger will send a click
This has advantages over ways to send clicks, firstly you can swing it (will depend on the receiving end rate of clicks) and you can tailor the impulse shape/level to make it more robust at clocking your particular device
You can mute the track or set up irregular clock or use TRCs to mess with the clock or use an ARP etc
It just gives a lot of flexibility - you’ll need the CV track - but be very sure to set the CV levels to Maximum 1.0 > 1.5v first - try lower first
There are many envelope shapes and some can produce Pulses where attack becomes pulse duration, if the PO stuff is finicky about the click profile
There are other simpler dedicated ways, but it’s worth trying the creative path imho
edit - the Korg stuff used to come with stereo minijack sync cables but worked mono - the PO stuff may be different, @sezare56 will perhaps be able to comment
I doubt very much it needs to be stereo although having looked it seems it may share audio/sync via a stereo TRS to allow neat chaining - probably depends on whether you need to hook up one or more
if you have a Korg or Arturia Gizmo then you can test using those first
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Only one input for sync and line input > it has to be stereo, if you want both. 
For sync only, maybe it works with a mono minijack, maybe it works only for line input…
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Think @darenager may make this and it has the answer, tip is sync so I think a mono cable is fine as it’ll ground line in
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Yes tip is sync, ring is audio, sleeve is ground.
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Thank to everyone for all the solutions.
Will report back with what I learn.
Done. Dead easy. 
And I could trigger switches, record trigs! 
A4 CVA > Jack adaptator > minijack cable > PO32 (SYNC 2, ACC+BPM)
CVA setting (triggered by FX track, every 2 steps)
3V
A4 CVC > Tip > alligator > trig 5 pin left, Ground > write middle pin.
CVC setting (triggered by CV track)
3V
Thanks, this will be crazy! 
Have fun!
Syncs for the tip! 8
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That’s sick!
And you didn’t hear it!
Up to 300bpm!
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Wait a sec. you were switching patterns on the pocket with CV from the A4?
It is possible. I was triggering Trig 5, record off, hence playing Trig 5 sound, tweak is with knobs.
It also has been triggered by an audio signal from OT, then I wanted to modulate Knob A with audio, pin right, and it turned off.
It doesn’t work anymore 
.
Goes blank when I press a switch. Possible to set time.
I’ll see tomorow with full charged batteries, but beware! 
I should be possible to modulate Knobs A/B with A4/AK, trigger sounds, record…
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I was just hoping to keep them in sync to manually trigger.
Being able to sequence pattern changes would be fantastic!
@sezare56 oops, I hope your PO will work again, hopefully it is just batteries.
Even though you only sent 3v to the switch I would not recommend this way, safer to use S-Trig with switches.
Disclaimer: Whilst the following should be safe, I don’t recommend anyone trying it on gear that they care about, any type of hacking carries multiple risk of damage, especially if something isn’t connected correctly, I take no responsibility so don’t go setting your legal team on me if the magic smoke escapes 
I recommend trying a cheap electronic toy from a flea market or similar first.
You can set one or more of the A4 CV outputs to S-Trig and connect that way. S-Trig works like a switch closing, so any item or piece of gear with a switch can be controlled, for instance a bypass switch on an fx pedal or even a computer keyboard!
To do it you just find which of the switch poles is ground (easy with multimeter) connect this to the S-Trig cable sleeve, then connect the S-Trig tip to the shorting pole of the switch (usually the one opposite to ground, but again easy to check with multimeter) now every time the A4 sends the S-Trig it should be functionally equivalent to the switch being pressed.
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There is hope. I saw a low battery message, had sounds. Batteries in charge…
I used V-Trig for sync, S-Trig for trigger, and OT audio signal (yes it worked ). Which would mean the ability to trigger up to 8 switches with A4+OT.
@darenager, do you think it’s possible to control “knobs” with CV or does it require an opto resistor?
@godlesshorror it is possible to change up to 4 patterns with A4, if the pattern button is held, or with a soldered switch. I planned to mod my PO33 (already brocken screen) so that it will be easier for my son.
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My bad, I read the post when I first woke up #brainfog.
Safest way to control the knobs on PO is with a vactrol, see this basic (and crap) schematic. Note, I might have the PO pots ground and +V transposed.
(Please excuse the crappness, drew it on ipad, need to get a decent tech drawing app, or some paper )
Here are the S-Trig settings I use, note the 0.1v setting may not be necessary on some gear, it depends on the circuit.
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