77 lines
4.7 KiB
Markdown
77 lines
4.7 KiB
Markdown
# Bill of Materials (BOM)
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## Mechanics
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| Name | Qty | Description | Comments | Suggested link | Image |
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|------|-----|-------------|----------|----------------|-------|
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| Steel ball | 12 | Ø1 mm (0.04") | Precision G10 or better. Can be sourced from small ball bearings | |
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| PU stretch cord | 1 m | Ø1mm | e.g. "Stretch Magic" or "Magic String" | [Aliexpress](https://www.aliexpress.us/item/3256805953910514.html)| |
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| 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/)|
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| Brass Pipe | 1 m | OD=Ø2mm ID=Ø1 mm | | [Amazon](https://a.co/d/1pRFmtf)| |
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| M2-8 dowel | 9 | | | | |
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| SHCS M2-8 | 9 | | | | |
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| Set Screw M3-6 | 3 | | | | |
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| FHCS M3-6 | 3 | | | | |
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| FHCS M3-10 | 9 | | | | |
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| FHCS M3-20 | 12 | | | | |
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## Electronics
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| Name | Qty | Description | Comments | Suggested link | Image |
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|------|-----|-------------|----------|----------------|-------|
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| DC-DC Step Down Module | 1 | 5V Fixed Output Step-Down Buck Converter | | [Aliexpress](https://www.aliexpress.com/item/1005008257960729.html)| |
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| (1N5819) OR (PMEG4010) | 1 | Diode (through-hole or SMD) | | |
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| Raspberry Pi Pico 2 | 1 | Microcontroller board | | | |
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| MT6835 Magnetic Encoder Module | 3 | Magnetic encoder | | [Aliexpress](https://www.aliexpress.us/item/3256808005140674.html)| |
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| TB6612FNG Driver | 3 | | | [Aliexpress](https://www.aliexpress.us/item/3256806060073976.html)| |
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| 470 µF Electrolytic Capacitor | 3 | > 100 µF | anything > 100µF will work well | |
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| 10 µF Ceramic Capacitor 0603 | 3 | Optional | | |
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| 4.7 k Resistor 0603 | 2 | Optional | | |
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| 2 Pin Power Header | 1 | 7.5 mm pitch | | |
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| 4 Pin Header | 4 | 2.5 mm pitch | | |
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| 8 Pin Header | 1 | 2.0 mm pitch | | |
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| NEMA 17 Stepper Motor | 3 | Body ≤ 38 mm | Body length <= 38mm | |
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## PCBs
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| Name | Qty | Description | Comments | Image |
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| ------------------- | --- | ----------- | -------- | ----- |
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| Control Board | 1 | | | |
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| balljoint_plate_pcb | 6 | | | |
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## 3D Printing
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| Name | Qty | Description | Comments | Image |
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| ------------------- | --- | ----------- | --------------------------------------------------------------- | -------------------------------------------------- |
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| Motor Horn | 3 | | 0.4 mm+ nozzle may require post-processing |  |
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| RubberBandCollet | 12 | | 0.4 mm nozzle, 0.1mm Layer height + may require post-processing |  |
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| Motor Mount | 3 | | |  |
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| End Effector | 1 | | |  |
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| Base Block | 1 | | |  |
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# Tool - Rod Sharpener
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## 3D Printing
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| Name | Qty | Description | Comments | Image |
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| ------------- | --- | ----------- | -------- | ----- |
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| Rod Guide | 1 | | | |
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| Blade Carrier | 1 | | | |
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# Tool - Rod Length Setting Press
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## PCBs
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| Name | Qty | Description | Comments | Image |
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| ----------------------- | --- | ----------- | -------- | ----- |
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| ball_alignment_disc_pcb | 1 | | | |
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## 3D Printing
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| Name | Qty | Description | Comments | Image |
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| ----------------------- | --- | ----------- | -------- | ----- |
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| RodGrindingJigA | 1 | | | |
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| RodGrindingJigB | 1 | | | |
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| RodGuide | 1 | | | |
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| RodCollet | 2 | | | |
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| CaliperClamp | 2 | | | |
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