Assembly Guide
Table of contents
Bill of Materials
For new builds, we strongly recommend Version 3 with a PCB kit for the easiest assembly experience. Version 2 offers an exciting option for builders that want to solder their own PCB with an esp32 devkit.
This sourcing guide assumes you have a compatible spin bike.
You should be able to source all components for < $100 USD including shipping
Required Hardware
The components in this list are required for the assembly of all versions of the SmartSpin2K
SmartSpin2K Hardware
| Quantity | Part | Source |
|---|---|---|
| 1 | PCB + wiring harness kit | Official Resellers |
| 1 | 38mm NEMA 17 Stepper | Amazon, Aliexpress |
| 1 | 12 or 24V Power Supply* | Amazon, Aliexpress |
| 2 | 608 Skate Bearings | Amazon, Aliexpress |
| 1 | 5/16” x 1-1/2” hex head bolt | |
| 1 | 5/16” washers | |
| 2 | 5/16” nuts | |
| 4 | #8 x 1.75” countersunk wood screws |
*Power supply can be in the 12v-24v range. Aim for 1amp or greater. If using the SmartSpin2K PCB Kit, you will need a 5.5x2.1 connector.
Shifter Hardware
| Quantity | Part | Source | Shifter Version |
|---|---|---|---|
| 1 | Shifter PCB Kit | Official Resellers, Self-Source | PCB Shifter |
| 2 | Tactile Switches | Amazon, Aliexpress | DIY Shifter |
| 1 | Stereo RCA–>3.5mm headphone “Y” Cable | Aliexpress | DIY Shifter |
Self-sourced PCB Hardware (Version 2)
Expand to View
In addition to the common hardware listed above, you will need the following hardware to build SmartSpin2k Version 2
| Quantity | Part | Source |
|---|---|---|
| 1 | ESP32 Dev Board | Amazon, Aliexpress |
| 1 | TMC2225 | Amazon, Aliexpress |
| 1 | JST-XH connectors kit | Amazon |
| 1 | 3.5mm stereo headphone connector (shifter connector) | Aliexpress |
| 1 | 5.5X2.1mm Dc Power connector | Aliexpress |
| 1 | PCB | PCBWay |
| 1 | Recom R-78E5.0-0.5 | Octopart |
| 1 | 10uF 50V capacitor (6mm diameter or smaller) | Octopart |
| 1 | 100uF 25V capacitor (6mm diameter or smaller) | Octopart |
| 1 | 0.1uF 50V capacitor | Octopart |
| 1 | 1K Ohm resistor | Octopart |
Review readme documentation if using published mods like the direct mount.
Printing Instructions
We recommend printing in a strong material like ABS, CF-Nylon, or PETG. Use 4 perimeters and 40% infill.
You will need the following common parts for Version 3:
- Both case halves from V3/case/
- The window in a translucent/transparent material from V3/case
- The knob cup from KnobCups in an accent color.
- Both gears from Common Assets/Gears in an accent color.
- The shifter strap(s) (single or set) using TPU from Common Assets/Shifters
You will also need the specific parts to adapt to your bike:
- An arm that’s the proper length for your bike from Common Assets/Arm
- A bike mount for your bike from Common Assets/Bike Mount
- The proper knob adapter for your bike from Common Assets/Inserts
How to build the SS2K
| Hardware Version | Link to Guide |
|---|---|
| Version 3 | Download Assembly Manual |
| Version 2 | Watch Video |
Shifter Assembly
| Hardware Version | Link to Guide |
|---|---|
| PCB Shifter | Github |
| Hand wired Shifter | Watch Video |