Kids OK with adultESP32Level 3/3
Five-Finger Robot Hand (HAND-5)
Our concept robot hand: 9 servos pull strings like tendons to bend and spread five 3D-printed fingers.
Kids OK, with an adult
DIY project. Children must build this only with an adult (16+ years) beside them at all times. Not suitable for children under 8 years.
This is a concept design video. The full pin-by-pin build comes in Part 2.
Strictly follow the description given with this video.
Video
The video link will be added here soon.
How it works
- Five servos in the forearm each turn a spool with two strings: red pulls a finger closed, blue pulls it open.
- Four micro servos in the palm move the fingers side to side.
- The thumb folds across the palm, like a real thumb.
- The ESP32 plays gestures by setting all 9 servo angles together.
Parts you need
- ESP32 dev board× 1Buy
- 5× MG90S metal-gear servos (forearm, bending)× 5Buy
- 4× micro servos (palm, side movement)× 4Buy
- 5V 3A supply× 1Buy
Kit for this projectPrice on request
Get the kitWiring
PowerGroundSignal
| # | From | Connect to |
|---|---|---|
| 1 Signal | 9 servo signal wires | ESP32 PWM pins (one each) |
| 2 Power | All servo red (+) | 5V 3A supply + |
| 3 Ground | All servo brown (−) | 5V 3A supply − |
| 4 Ground | ESP32 GND | Supply − (common ground) |
3D print files
- Fingers, palm and forearmConcept design: PLA + TPU jointsLink at launch
Code
The tested Arduino / ESP32 code for this project will be posted here, ready to copy.