Alright, after reading a lot about the the different “standards”, I wanted to ask if there is maybe also some advice on which way to go when choosing a form factor for a DIY modular system. I know, it’s quite an opinionated topic but since I hesitate to fix I thought I ask you, experts.
I found Modular Form Factors - Analog Modular Synthesizers for Electronic Music by Synthesizers.com very helpful, it lists the parameters of all popular system but I am a bit confused and cannot decide.
I know, it’s a first world problem and everything can be changed or mixed together later, but still, I am interested in your thoughts about this topic.
For now, my current design decision is 6.3mm jacks, because I like those and the click when you plug then inn; I don’t want to fiddle around with small 3.5 jacks.
As a physicist, I love the metric system and it happens that you can easily buy cheap aluminium plates precut to round values (e.g. 100mm x 200mm), so I thought I just go with 200mm height, but on the other hand – given the small amount of modules I will build in the near future it’s not that important, so I guess many people go for a U-based system (where U=1.75") and have racks with 3U/5U/6U etc.
It’s probably a good idea to stick to this U-standard, just to be able to extend my system with other modules but on the other hand I also found that the Kosmo format is also using the 200mm system: STUFF - LOOK MUM NO COMPUTER and it claims to be compatible with the EuroRack system. How is that possible? Using adapter panels? The EuroRack is 128mm tall, according to that table above.
For the racks themselves the Adam Hall system is I think perfect and cheap. A 1m Adam Hall 6161 costs around 5 EUR. Some plywood or cheap furniture from Swedish companies might do the frame-job. The screw size is M6.
What system is Kosmo using? I read that it uses M3 screws?
A bit more difficult decision is the power supply. I see that there is a mix of +12/-12, +15/-15 and additional +5V and whatnot. Most of the circuit designs I created so far are will work with either 12V or 15V rails but I am curious what you do. An additional stable +5V rail is also a nice idea.
My first power supply is made out of a toroidal transformer (230VAC to 12 VAC) and the usual 7812/7912 regulartors. I try to design my circuits with +12V and -12V as lower/upper boundaries, just to be compatible with 15V systems.
Sorry if this is a procrastination-like thread, I am just a bit indecisive and waiting for my Arturia BeatStep Pro to finally arrive