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chore: add more items suggested links

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add pu stretch cord, brass pipe, dc-dc step down, mt6835, tb6612
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Gustavo Alberto 2025-10-07 19:31:53 -03:00
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| Name | Qty | Description | Comments | Suggested link |
|------|-----|--------------|-----------|----------------|
| Steel ball | 12 | Ø1.25 mm (0.05") | Precision G10 or better. Can be sourced from small ball bearings | |
| PU stretch cord | 1 m | Ø1mm | e.g. "Stretch Magic" or "Magic String" | |
| PU stretch cord | 1 m | Ø1mm | e.g. "Stretch Magic" or "Magic String" | [Aliexpress](https://www.aliexpress.us/item/3256805953910514.html)|
| Neodym Cylinder Magnet | 70 | Ø3mm h=4 mm | N42 Grade | [Ebay Link](https://www.ebay.de/itm/365333642187?var=635110190027) |
| Brass Pipe | 1 m | OD=Ø2mm ID=Ø1 mm | | |
| Brass Pipe | 1 m | OD=Ø2mm ID=Ø1 mm | | [Amazon](https://a.co/d/1pRFmtf)|
| M2 Screw | 12 | M2×12 mm, Countersunk | | |
| M3 Grub Screw | 6 | M3×4 | | |
## Electronics
| Name | Qty | Description | Comments | Suggested link |
|------|-----|--------------|-----------|----------------|
| DC-DC Step Down Module | 1 | 4.75–23 V Step-Down Buck Converter | | |
| DC-DC Step Down Module | 1 | 4.75–23 V Step-Down Buck Converter | | [Aliexpress](https://www.aliexpress.us/item/3256806752772875.html)|
| (1N5819) OR (PMEG4010) | 1 | Diode (through-hole or SMD) | | |
| Raspberry Pi Pico 2 | 1 | Microcontroller board | | |
| MT6835 Magnetic Encoder Module | 3 | Magnetic encoder | | |
| TB6612FNG Driver | 3 | | | |
| MT6835 Magnetic Encoder Module | 3 | Magnetic encoder | | [Aliexpress](https://www.aliexpress.us/item/3256808005140674.html)|
| TB6612FNG Driver | 3 | | | [Aliexpress](https://www.aliexpress.us/item/3256806060073976.html)|
| 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 | | |