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lerobot/BILL_OF_MATERIALS.md

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# Bill Of Materials (BOM)
## Alexander Koch arms
### Follower and Leader arm
| Part | Amount | Unit Cost (US) | Buy US | Unit Cost (EU) | Buy EU | Unit Cost (UK) | Buy UK |
|---|---|---|---|---|---|---|---|
| Dynamixel XL430-W250-T | 2 | $50 | [Robotis](https://www.robotis.us/dynamixel-xl430-w250-t) | 57-61€ | [MyBotShop](https://www.mybotshop.de/DYNAMIXEL-XL430-W250-T)-[GenRobots](https://www.generationrobots.com/en/402823-dynamixel-xl430-w250-t-servomotor.html) | £47 | [RoboSavvy](https://robosavvy.co.uk/dynamixel-xl430-w250-t.html)
| Dynamixel XL330-M288-T | 4 | $24 | [Robotis](https://www.robotis.us/dynamixel-xl330-m288-t) | 40-46€ | [MyBotShop](https://www.mybotshop.de/DYNAMIXEL-XL330-M288-T)-[GenRobots](https://www.generationrobots.com/en/403817-dynamixel-xl330-m288-t-servo-motor.html) | £27 | [RoboSavvy](https://robosavvy.co.uk/robotis-dynamixel-xl330-m288-t.html) |
| Dynamixel XL330-M077-T | 6 | $24 | [Robotis](https://www.robotis.us/dynamixel-xl330-m077-t) | 40-46€ | [MyBotShop](https://www.mybotshop.de/DYNAMIXEL-XL330-M077-T)-[GenRobots](https://www.generationrobots.com/en/403818-dynamixel-xl330-m077-t-servo-motor.html) | £27 | [RoboSavvy](https://robosavvy.co.uk/robotis-dynamixel-xl330-m077-t.html) |
| XL330 Frame and Idler Wheel 4pcs set | 2 | $10 | [Robotis](https://www.robotis.us/fpx330-h101-4pcs-set) | 12€ | [GenRobots](https://www.generationrobots.com/en/403860-FPX330-H101-hinge-frame-and-idler-set-dynamixel-xl330.html) | £10 | [RoboSavvy](https://robosavvy.co.uk/fpx330-h101-4pcs-set.html) |
| XL430 Idler Wheel set | 1 | $7 | [Robotis](https://www.robotis.us/hn11-i101-set) | 9€ | [GenRobots](https://www.generationrobots.com/en/403206-hn11-i101-horn-set.html) | £7 | [Robosavvy](https://robosavvy.co.uk/hn11-i101-set.html)|
| Waveshare Serial Bus Servo Driver Board | 2 | $10 | [Amazon](https://a.co/d/7C3RUYU) | 6€ | [Eckstein](https://eckstein-shop.de/WaveShare-Serial-Bus-Servo-Driver-Board-for-ST-SC-Serial-Bus-Servos-EN) | £8 | [Amazon](https://www.amazon.com/Waveshare-Integrates-Control-Circuit-Supports/dp/B0CTMM4LWK/)|
| Voltage Reducer | 1 | $14 | [Amazon](https://www.amazon.com/EPLZON-Converter-5V-5-3V-Transformer-Regulator/dp/B09R4DBZJK) | 7€ | [Amazon](https://www.amazon.fr/ICQUANZX-Converter-Transformer-Voltage-Regulator/dp/B07RGB2HB6) | £11 | [Amazon](https://www.amazon.com/EPLZON-Converter-5V-5-3V-Transformer-Regulator/dp/B09R4DBZJK) |
| 12V Power Supply | 1 | $12 | [Amazon](https://a.co/d/40o8uMN) | 15-36€ | [Amazon](https://www.amazon.fr/LEDMO-Alimentation-Adaptateur-Transformateurs-Chargeur/dp/B07PGLXK4X)-[GenRobots](https://www.generationrobots.com/en/400866-smps-charger-for-bioloid-and-dynamixel-robotis.html) | £9 | [Amazon](https://a.co/d/40o8uMN) |
| 5V Power Supply | 1 | $6 | [Amazon](https://a.co/d/5u90NVp) | 9€ | [Amazon](https://www.amazon.fr/LEYF-Alimentation-Universelle-Adaptateur-Enfichable/dp/B09NGVWBSY) | £4 | [Amazon](https://a.co/d/5u90NVp)|
| Jumper Wires 3*40 pcs set (M-M, M-F, F-F) | 1 | $7 | [Amazon](https://a.co/d/hQfk2cb) | 9€ | [Amazon](https://www.amazon.fr/AZDelivery-Jumper-Cavalier-C%C3%A2ble-Arduino/dp/B074P726ZR) | £5 | [Amazon](https://a.co/d/hQfk2cb) |
| Table Clamp 2pcs set | 1 | $9 | [Amazon](https://www.amazon.com/Mr-Pen-Carpenter-Clamp-6inch/dp/B092L925J4/?th=1) | n/a | n/a | £7 | [Amazon](https://www.amazon.com/Mr-Pen-Carpenter-Clamp-6inch/dp/B092L925J4/?th=1) |
| Table Clamp 4pcs set | 1 | n/a | n/a | 14€ | [Amazon](https://www.amazon.fr/CAUTIOUS-Serre-Joint-R%C3%A9glable-Serre-Joints/dp/B0CJMB3SKH) | n/a | n/a |
| 1.5mm Star/Cruciform Screwdriver 2pcs set | 1 | n/a | n/a | 7€ | [Amazon](https://www.amazon.fr/sourcing-map-Cruciforme-%C3%89lectroniques-R%C3%A9paration/dp/B0BQ69J2QF) | n/a | n/a |
| 1.5mm Star/Cruciform Screwdriver included in set | 1 | $6 | [Amazon](https://www.amazon.com/Choice-9-Piece-Precision-Screwdriver-Phillips/dp/B0747DYJJR) | n/a | n/a | £5 | [Amazon](https://www.amazon.com/Choice-9-Piece-Precision-Screwdriver-Phillips/dp/B0747DYJJR) |
| USB C-A or C-C 2pcs set | 1 | $9 | [Amazon](https://www.amazon.com/Charging-etguuds-Charger-Braided-Compatible/dp/B0B8NWLLW2/) | 7€ | [Amazon](https://www.amazon.fr/-/en/dp/B0CKPDZ3SK/) | £7 | [Amazon](https://www.amazon.com/Charging-etguuds-Charger-Braided-Compatible/dp/B0B8NWLLW2/)|
| Total | | $450 | | 618€ | | £455 | |
### Follower arm only
| Part | Amount | Unit Cost (US) | Buy US | Unit Cost (EU) | Buy EU | Unit Cost (UK) | Buy UK |
|---|---|---|---|---|---|---|---|
| Dynamixel XL430-W250-T | 2 | $50 | [Robotis](https://www.robotis.us/dynamixel-xl430-w250-t) | 57-61€ | [MyBotShop](https://www.mybotshop.de/DYNAMIXEL-XL430-W250-T)-[GenRobots](https://www.generationrobots.com/en/402823-dynamixel-xl430-w250-t-servomotor.html) | £47 | [RoboSavvy](https://robosavvy.co.uk/dynamixel-xl430-w250-t.html)
| Dynamixel XL330-M288-T | 4 | $24 | [Robotis](https://www.robotis.us/dynamixel-xl330-m288-t) | 40-46€ | [MyBotShop](https://www.mybotshop.de/DYNAMIXEL-XL330-M288-T)-[GenRobots](https://www.generationrobots.com/en/403817-dynamixel-xl330-m288-t-servo-motor.html) | £27 | [RoboSavvy](https://robosavvy.co.uk/robotis-dynamixel-xl330-m288-t.html) |
| XL330 Frame and Idler Wheel 4pcs set | 1 | $10 | [Robotis](https://www.robotis.us/fpx330-h101-4pcs-set) | 12€ | [GenRobots](https://www.generationrobots.com/en/403860-FPX330-H101-hinge-frame-and-idler-set-dynamixel-xl330.html) | £10 | [RoboSavvy](https://robosavvy.co.uk/fpx330-h101-4pcs-set.html) |
| XL430 Idler Wheel set | 1 | $7 | [Robotis](https://www.robotis.us/hn11-i101-set) | 9€ | [GenRobots](https://www.generationrobots.com/en/403206-hn11-i101-horn-set.html) | £7 | [Robosavvy](https://robosavvy.co.uk/hn11-i101-set.html)|
| Waveshare Serial Bus Servo Driver Board | 1 | $10 | [Amazon](https://a.co/d/7C3RUYU) | 6€ | [Eckstein](https://eckstein-shop.de/WaveShare-Serial-Bus-Servo-Driver-Board-for-ST-SC-Serial-Bus-Servos-EN) | £8 | [Amazon](https://www.amazon.com/Waveshare-Integrates-Control-Circuit-Supports/dp/B0CTMM4LWK/)|
| Voltage Reducer | 1 | $14 | [Amazon](https://www.amazon.com/EPLZON-Converter-5V-5-3V-Transformer-Regulator/dp/B09R4DBZJK) | 7€ | [Amazon](https://www.amazon.fr/ICQUANZX-Converter-Transformer-Voltage-Regulator/dp/B07RGB2HB6) | £11 | [Amazon](https://www.amazon.com/EPLZON-Converter-5V-5-3V-Transformer-Regulator/dp/B09R4DBZJK) |
| 12V Power Supply | 1 | $12 | [Amazon](https://a.co/d/40o8uMN) | 15-36€ | [Amazon](https://www.amazon.fr/LEDMO-Alimentation-Adaptateur-Transformateurs-Chargeur/dp/B07PGLXK4X)-[GenRobots](https://www.generationrobots.com/en/400866-smps-charger-for-bioloid-and-dynamixel-robotis.html) | £9 | [Amazon](https://a.co/d/40o8uMN) |
| Jumper Wires 3*40 pcs set (M-M, M-F, F-F) | 1 | $7 | [Amazon](https://a.co/d/hQfk2cb) | 9€ | [Amazon](https://www.amazon.fr/AZDelivery-Jumper-Cavalier-C%C3%A2ble-Arduino/dp/B074P726ZR) | £5 | [Amazon](https://a.co/d/hQfk2cb) |
| Table Clamp | 1 | $6 | [Amazon](https://a.co/d/4KEiYdV) | n/a | n/a | £5 | [Amazon](https://a.co/d/4KEiYdV) |
| Table Clamp 4pcs set (1 needed)| 1 | n/a | n/a | 14€ | [Amazon](https://www.amazon.fr/CAUTIOUS-Serre-Joint-R%C3%A9glable-Serre-Joints/dp/B0CJMB3SKH) | n/a | n/a |
| 1.5mm Star/Cruciform Screwdriver 2pcs set (1 pc needed) | 1 | n/a | n/a | 7€ | [Amazon](https://www.amazon.fr/sourcing-map-Cruciforme-%C3%89lectroniques-R%C3%A9paration/dp/B0BQ69J2QF) | n/a | n/a |
| 1.5mm Star/Cruciform Screwdriver included in set | 1 | $6 | [Amazon](https://www.amazon.com/Choice-9-Piece-Precision-Screwdriver-Phillips/dp/B0747DYJJR) | n/a | n/a | £5 | [Amazon](https://www.amazon.com/Choice-9-Piece-Precision-Screwdriver-Phillips/dp/B0747DYJJR) |
| USB C-A or C-C 2pcs set (1 pc needed) | 1 | $9 | [Amazon](https://www.amazon.com/Charging-etguuds-Charger-Braided-Compatible/dp/B0B8NWLLW2/) | 7€ | [Amazon](https://www.amazon.fr/-/en/dp/B0CKPDZ3SK/) | £7 | [Amazon](https://www.amazon.com/Charging-etguuds-Charger-Braided-Compatible/dp/B0B8NWLLW2/)|
| Total | | $277 | | 360€ | | £269 | |
### Leader arm only
| Part | Amount | Unit Cost (US) | Buy US | Unit Cost (EU) | Buy EU | Unit Cost (UK) | Buy UK |
|---|---|---|---|---|---|---|---|
| Dynamixel XL330-M077-T | 6 | $24 | [Robotis](https://www.robotis.us/dynamixel-xl330-m077-t) | 40-46€ | [MyBotShop](https://www.mybotshop.de/DYNAMIXEL-XL330-M077-T)-[GenRobots](https://www.generationrobots.com/en/403818-dynamixel-xl330-m077-t-servo-motor.html) | £27 | [RoboSavvy](https://robosavvy.co.uk/robotis-dynamixel-xl330-m077-t.html) |
| XL330 Frame and Idler Wheel 4pcs set | 1 | $10 | [Robotis](https://www.robotis.us/fpx330-h101-4pcs-set) | 12€ | [GenRobots](https://www.generationrobots.com/en/403860-FPX330-H101-hinge-frame-and-idler-set-dynamixel-xl330.html) | £10 | [RoboSavvy](https://robosavvy.co.uk/fpx330-h101-4pcs-set.html) |
| Waveshare Serial Bus Servo Driver Board | 1 | $10 | [Amazon](https://a.co/d/7C3RUYU) | 6€ | [GenRobots](https://eckstein-shop.de/WaveShare-Serial-Bus-Servo-Driver-Board-for-ST-SC-Serial-Bus-Servos-EN) | £8 | [Amazon](https://www.amazon.com/Waveshare-Integrates-Control-Circuit-Supports/dp/B0CTMM4LWK/) |
| 5V Power Supply | 1 | $6 | [Amazon](https://a.co/d/5u90NVp) | 9€ | [Amazon](https://www.amazon.fr/LEYF-Alimentation-Universelle-Adaptateur-Enfichable/dp/B09NGVWBSY) | £4 | [Amazon](https://a.co/d/5u90NVp)|
| Jumper Wires 3*40 pcs set (M-M, M-F, F-F) | 1 | $7 | [Amazon](https://a.co/d/hQfk2cb) | 9€ | [Amazon](https://www.amazon.fr/AZDelivery-Jumper-Cavalier-C%C3%A2ble-Arduino/dp/B074P726ZR) | £5 | [Amazon](https://a.co/d/hQfk2cb)|
| Table Clamp | 1 | $6 | [Amazon](https://a.co/d/4KEiYdV) | n/a | n/a | £5 | [Amazon](https://a.co/d/4KEiYdV) |
| Table Clamp 4pcs set | 1 | n/a | n/a | 14€ | [Amazon](https://www.amazon.fr/CAUTIOUS-Serre-Joint-R%C3%A9glable-Serre-Joints/dp/B0CJMB3SKH) | n/a | n/a |
| 1.5mm Star/Cruciform Screwdriver 2pcs set | 1 | n/a | n/a | 7€ | [Amazon](https://www.amazon.fr/sourcing-map-Cruciforme-%C3%89lectroniques-R%C3%A9paration/dp/B0BQ69J2QF) | n/a | n/a |
| 1.5mm Star/Cruciform Screwdriver included in set | 1 | $6 | [Amazon](https://www.amazon.com/Choice-9-Piece-Precision-Screwdriver-Phillips/dp/B0747DYJJR) | n/a | n/a | £5 | [Amazon](https://www.amazon.com/Choice-9-Piece-Precision-Screwdriver-Phillips/dp/B0747DYJJR)
| Total | | $189 | | 297€ | | £199 | |