📦 Bill of Materials
Electronics
Capacitors
| Item | Specs | Qty |
|---|
| Ceramic Capacitors | 104 / 0.1µF / 100nF / 50V | 100 pcs |
| Electrolytic Capacitors | 16V / 100µF, 5×7mm | 50 pcs |
Semiconductors
| Item | Specs | Qty |
|---|
| 1N4007 Rectifier Diode | 1A | 100 pcs |
| IRLZ44N MOSFET Transistor | TO-220 package | 20 pcs (2 packs of 10) |
Connectors
| Item | Specs | Qty |
|---|
| XT60H Plug Connectors (with cover) | XT60 Upgrade | 10 pairs |
| XT60 Plug Connectors | Male and Female Bullet | 10 pcs/bag (5M × 5F) |
| Mini Fast Wiring Connectors | M411T | 50 pcs |
Protection
| Item | Specs | Qty |
|---|
| Quick Blow Glass Fuses | 5×20mm | 100 pcs |
| 5×20mm Glass Fuse Holders | 3A rating | 2 sets |
Wire & Cable
| Item | Specs | Qty |
|---|
| 2 Pin Electrical Wire | Tinned Copper, 24 AWG, stranded — 5 meters | |
| Flexible PET Braided Cable Sleeving | 6mm width, 5 meters | |
Actuation
| Item | Specs | Qty |
|---|
| Nichrome Electric Heating Coils | 0.15mm | 2 packs |
Mechanical
| Item | Specs | Qty |
|---|
| Super Strong Nylon Fishing Line | 0.4 Mainline — 100 meters | |
| Fishing Aluminum Crimp Sleeves | 0.8 / 1.8 Round | 120 pcs |
Tools
| Item | Specs | Qty |
|---|
| Adjustable Temperature Electric Soldering Iron | 60W, EU Standard | |
Muscle Bundle Assembly
Structure (per fascicle)
- Core: Nylon + Kevlar strands intertwined and twisted
- Heating element: Nichrome coil wound around core
- Outer sleeve: PET braided sleeving
Termination
- Heat shrink: Both ends — strain relief where core exits PET sleeve
- Ferrules: Actuator connection end — crimped to core to prevent fraying
Interconnection (bundle to bundle)
Multiple fascicles gangled together by interweaving core ends before ferrule crimp, covered with a shared heat shrink boot.
Circuit Interconnection
- MOSFETs (IRLZ44N) drive nichrome heating
- Diodes (1N4007) suppress reverse EMF on de-energization
- Capacitors (100µF bulk + 100nF ceramic) decouple MOSFET gates and ESP32 power
- Fuses protect each muscle group circuit
📄 Source: 📦 Bill of Materials