Build one!
Notes:
The Stepchild is designed to be relatively simple to assemble and build yourself, but there are a few things to to keep in mind before jumping into the project. The first thing is that even though all the Stepchild components can be easily sourced from scratch, the Stepchild's four PCBs need to fabricated with a manufacturing service. This is why there's a kit! You can of course have them fabricated and assembled yourself, but they're likely cheaper when bought in the kit, which also comes with the full parts list.
A note on ordering the PCBs yourself: Three of the PCBs (the main board, screen board, and step button board) require tight SMD component soldering. Although you can assemble them by hand, I really recommend having these boards populated using a PCBA service! If you're already using a service to fabricate your own PCBs, I recommend paying to have these three boards fully populated with their SMD components.
There is a lot of soldering required to build the Stepchild. Most of the assembly process isn't very difficult, but if you're totally new to soldering, this might not be the best experience. Check out the build video and see if this is a project you'd feel comfortable with.
Things you'll need:
A google doc with the parts listing can be found here (note that the listings might not be updated).
If you're printing your own case, the enclosure can be printed on any FDM 3D printer with an 0.2mm nozzle, or an SLA printer, with a build size of at least 180x180mm.
And that's it!
Part
Quant.
Top Shell
x1
Bottom Shell
x1
Battery Cover
x1
Raspberry Pi Pico
x1
2.42 24pin OLED
x1
Rotary Encoder Knob
x2
Push Switch Rotary Encoder
x2
Button Cap
x8
6mm Push Button
x9
Joystick
x1
3.5mm SMD Jack
x5
5pDIN MIDI Jack
x5
TRS Jack
x4
link3xAA THT Battery Holder
x1
Slide Switch
x1
LED Button Cap
x16
LED Button
x16
4P JST-XH Connector
x2
5P JST-XH Connector
x2
8P JST-XH Connector
x2
1x7 2.54mm Header Pins
x1
1x3 2.54mm Header Pins
x1
8P JST Ribbon Cable
x1
5P JST Ribbon Cable
x1
4P JST Ribbon Cable
x1
M2 Screw
x16
22mm Brass M2 Standoff
x4
4mm Brass M2 Standoff
x4
8mm Brass M2 Threaded Standoff
x4
Main Board PCB
x1
Screen Board PCB
x1
Step Button PCB
x1
CV PCB
x1