The AM1021 is a sequential switch, able to take the 3 outputs of the 1027 sequencer and combine them sequentially. Thus you can have up to 24 steps frrom the 3 x 8 sequences from the #arp2500 1027 #eurorack #module

It does this in very little hp space. The mix sequencer 1050 can also do that, but you can't use it for other functions, such as another sequencer or two or mixer. It gives the control row more flexibility. #modularsynth #sequencer #dawless #music

https://modulargrid.net/e/amsynths-am1021-sequential-clock

So what's on the other side? To go with a 2600, you know you want some sequencing goodness from the Arp 2500!

Note the external 16 pin power connector on the left side, in case I add an expander.

Finished #soldering the #StackSynth #VCO after the missing resistors arrived today. The tuning knobs are a bit close for my taste. The next revision will have a wider gap between.
After tuning it to roughly 1 Volt per octave, I tried it with my #sequencer. The test setup only included VCO, LFO, and mixer, though. The VCA will be the next board.
https://makertube.net/w/xwhPj4tAb2BdmPDmQuVakv
#diysynth #synthesizer

a longer demo of the #sequencer. I play around with some controls and have replaced the mixer and LFO with the available #StackSynth modules, mixing sawtooth and triangle waveforms of the perfboard VCO (will be replaced by one of the next StackSynth modules).
#diysynth #synthesizer
https://makertube.net/w/1SoLv9g8bagtud34Muejjk

All the wires have been crimped! This was very tedious and repetitive. But after the first few done, it went relatively smoothly.
I only had to make two wires longer.
Connector list:
- ten six-pin JST
- three two-pin JST
- one four-pin JST
- one ten-pin DuPont
It looks very cramped, but it works!
The steps are ordered columns first, like this:
1 3 5 7 9
2 4 6 8 10
Else, I would have needed to make more wires longer.
#diysynth #sequencer #electronics #crimping #cables

Next step finished: #soldering the #pcb that arrived this week.
I had to drill two holes that I forgot to add to the boards. But there was only the ground plane at that position.
Again, they were manufactured by @aislerhq
#diysynth #sequencer #electronics

And it's done. All wires that had to be soldered are soldered. What a mess. In German we have a word for that: "Kabelsalat" (cable salad).
My black wires are empty now.
The power switch has screw posts, so I have to crimp some shoes on the cables. Next is tying them together and crimping the connectors on the other ends of all the wires -.-
#soldering #diysynth #electronics #sequencer #cablemanagement #kabelsalat

First wires soldered. For future projects, I'll design a common power bus. But I'll stick with this now.
All potentiometers and switches for the ten steps have been wired.
#diysynth #electronics #sequencer #soldering

All holes have been drilled and components inserted, except the LEDs - have to decide on the color first.
After that I'll have to wire it all up.
And then, when the PCB arrives, solder that up and plug everything together.
Still, it's a nice feeling to hold it in my hands like that and fiddling with the controls.
#diysynth #diyelectronics #electronics #synthesizer #sequencer

I think I have decided on the layout for the top part, with the inputs and outputs, power switch, and step selector. I still have to wait for the proper power switch to arrive, but this should work out.
#diysynth #electronics #enclosure #synthesizer #sequencer