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OpenMicroManipulator/documentation/bom/bom.md
SirEggNut 6f3faf936b
Revise BOM descriptions and consolidate connector entries 
Updated descriptions for Crimp Beads and connectors, consolidating PH2.0 housing and header entries.
2026-06-28 17:54:30 -04:00

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# Bill of Materials (BOM)
## Mechanics
| Name | Qty | Description | Comments | Suggested link | Image |
|------|-----|-------------|----------|----------------|-------|
| Steel ball | 12 | Ø1 mm (0.04") | Precision G10 or better. Can be sourced from small ball bearings | |
| PU stretch cord | 1 m | Ø1mm | e.g. "Stretch Magic" or "Magic String" | [Aliexpress](https://www.aliexpress.us/item/3256805953910514.html)| ![Pu strech cord](images/PU_StretchCord.png)|
| Neodym Cylinder Magnet | 70 | Ø3mm h=5 mm | N52 Grade | [NeoMagnets](https://www.buyneomagnets.com/p/3mm-dia-x-5mm-thick-n52-neodymium-rare-earth-disc-magnets-100-pack/)|
| Brass Pipe | 1 m | OD=Ø2mm ID=Ø1 mm | | [Amazon](https://a.co/d/1pRFmtf)| ![Brass Pipe](images/BrassPipe.png)|
| M2-8 dowel | 9 | | | | |
| SHCS M2-8 | 9 | | | | |
| Set Screw M3-6 | 3 | | | | |
| FHCS M3-6 | 3 | | | | |
| FHCS M3-10 | 9 | | | | |
| FHCS M3-20 | 12 | | | | |
| Crimp Beads | 12 | | Used to affix the ends of the PU cord | | |
## Electronics
| Name | Qty | Description | Comments | Suggested link | Image |
|------|-----|-------------|----------|----------------|-------|
| DC-DC Step Down Module | 1 | 4.75–23 V Step-Down Buck Converter | | [Aliexpress](https://www.aliexpress.us/item/3256806752772875.html)| ![DC-DC Step Down](images/DC_DC-StepDown.png)|
| (1N5819) OR (PMEG4010) | 1 | Diode (through-hole or SMD) | | |
| Raspberry Pi Pico 2 | 1 | Microcontroller board | | | ![Raspberry Pi Pico 2](images/RaspberryPiPico2.png)|
| MT6835 Magnetic Encoder Module | 3 | Magnetic encoder | | [Aliexpress](https://www.aliexpress.us/item/3256808005140674.html)| ![MT6835 Magnetic Encoder Module](images/MT6835.png)|
| TB6612FNG Driver | 3 | | | [Aliexpress](https://www.aliexpress.us/item/3256806060073976.html)| ![TB6612FNG Driver](images/TB6612FNG.png)|
| 470 µF Electrolytic Capacitor | 3 | > 100 µF | anything > 100µF will work well | |
| 10 µF Ceramic Capacitor 0603 | 3 | Optional | | |
| 4.7 k Resistor 0603 | 2 | Optional | | |
| NEMA 17 Stepper Motor | 3 | Body ≤ 38 mm | Body length <= 38mm | |
| JST XH2.54 4P connector | 3 | 4P Housing & Header 2.54mm pitch | J1, J2, J3 (motors) | [Aliexpress](https://www.aliexpress.com/item/1005007080333485.html?spm=a2g0o.order_list.order_list_main.53.3d5d1802JZg5Wb) | ![JST XH2.54 Connector](images/JST_XH2.54_Connector.png) |
| XT60H Connector | 1 | 2P Male & Female pair 7.5mm pitch | Power connector | [Aliexpress](https://www.aliexpress.com/item/1005007605928815.html?spm=a2g0o.order_list.order_list_main.409.3d5d1802JZg5Wb) | ![XT60H Connector](images/XT60H_Pairs.png) |
| PH2.0 4P Housing <br> PH2.0 8P Housing | 1 <br> 1 | 4P 2mm pitch Housing <br> 8P 2mm pitch Housing | J5 (tool/I2C)<br> J4 (encoders) | [Aliexpress](https://www.aliexpress.com/item/1005010491403413.html?spm=a2g0o.order_detail.order_detail_item.3.2b60126a5SMahl) | ![PH2.0 Housings](images/PH2_Housings.png) |
| PH2.0 4P Header <br> PH2.0 8P Header | 1 <br> 1 | 4P 2mm pitch Header <br> 8P 2mm pitch Header | J5 (tool/I2C) <br> J4 (encoders) | [Aliexpress](https://www.aliexpress.com/item/1005010491403413.html?spm=a2g0o.order_detail.order_detail_item.3.2b60126a5SMahl) | ![PH2.0 Headers](images/PH2_Headers.png) |
## PCBs
| Name | Qty | Description | Comments | Image |
| ------------------- | --- | ----------- | -------- | ----- |
| Control Board | 1 | | | |
| balljoint_plate_pcb | 6 | | | |
## 3D Printing
| Name | Qty | Description | Comments | Image |
| ------------------- | --- | ----------- | --------------------------------------------------------------- | -------------------------------------------------- |
| Motor Horn | 3 | | 0.4 mm+ nozzle may require post-processing | ![Motor Horn](images/MotorHorn.png) |
| RubberBandCollet | 12 | | 0.4 mm nozzle, 0.1mm Layer height + may require post-processing | ![Rubber Band Collet](images/RubberBandCollet.png) |
| Motor Mount | 3 | | | ![Motor Mount](images/MotorMount.png) |
| End Effector | 1 | | | ![End Effector](images/EndEffector.png) |
| Base Block | 1 | | | ![Base Block](images/BaseBlock.png) |
# Tool - Rod Sharpener
## 3D Printing
| Name | Qty | Description | Comments | Image |
| ------------- | --- | ----------- | -------- | ----- |
| Rod Guide | 1 | | | |
| Blade Carrier | 1 | | | |
# Tool - Rod Length Setting Press
## PCBs
| Name | Qty | Description | Comments | Image |
| ----------------------- | --- | ----------- | -------- | ----- |
| ball_alignment_disc_pcb | 1 | | | |
## 3D Printing
| Name | Qty | Description | Comments | Image |
| ----------------------- | --- | ----------- | -------- | ----- |
| RodGrindingJigA | 1 | | | |
| RodGrindingJigB | 1 | | | |
| RodGuide | 1 | | | |
| RodCollet | 2 | | | |
| CaliperClamp | 2 | | | |
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