A tendon-driven hand build with servo actuation, flexible fingers, force limits, calibration and safe grip experiments before prosthetic claims.
A robot hand is a mechanics and control project. Fingers need compliant joints, tendons or linkages, enough grip force and a way to avoid crushing objects or stripping servos.
Start with one finger, then two-finger pinch, then a full hand. Avoid medical or prosthetic claims unless you are working under the proper engineering and regulatory process.
Light joints with elastic return or hinges
Transfers servo motion to fingers
Finger actuation
Stable multi-servo PWM
Grip commands and calibration
Optional grip feedback
Tune tendon routing and joint return before scaling up.
Useful pinch grip with simpler control.
More expressive, but harder to wire and calibrate.
Treat the generated output as a prototype plan, not a certified product. Body-adjacent, high-voltage, optical-energy and mobility builds need qualified review before real-world use.
Tendons are compact and hand-like. Linkages are easier to debug and print accurately.
Do not treat a DIY demo as a medical device. Keep it educational unless properly engineered and reviewed.
Binding fingers, too much tendon tension or weak power rails are common causes.
Core path for choosing a robot project and avoiding common beginner mistakes.
Lower-cost projects for learning control, sensors and motion.
Practical robots where reliability, charging, sensors and safety matter.
Harder mechanics, waterproofing, gait control, pickup or autonomy.
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How to make a robot arm at home: parts list, servo vs stepper tradeoffs, printable frame, Arduino/ESP32 control, gripper, firmware and safety notes.
Start with this prompt prefilled, then let RoboHub generate the live parts list, wiring plan, CAD and firmware.
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