{"product_id":"robotic-hand","title":"Robotic Hand - 3D Print Files","description":"\u003cul\u003e\n\u003cli\u003eDescription:\n\u003cul\u003e\n\u003cli\u003eSTL and 3MF files and user manual for a proof of concept low-cost 3D printable robotic hand and controller. User manual includes assembly instructions and a bill of materials for the hardware\/components used.\u003c\/li\u003e\n\u003cli\u003eThe hand and controller enclosure are assembled using mostly standard, off-the-shelf components available from typical online retailers including standard servos for each finger, a micro servo for thumb base rotation, and metric fasteners and heat inserts.\u003c\/li\u003e\n\u003cli\u003eThe hand and controller can be printed from PLA, PETG, or other rigid, cost-effective filaments, and the hinges, finger\/palm pads are printed from flexible TPU filament.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/li\u003e\n\u003cli\u003e Specifications:\n\u003cul\u003e\n\u003cli\u003eMechanical:\n\u003cul\u003e\n\u003cli\u003eDegrees of freedom:\n\u003cul\u003e\n\u003cli\u003e6 active via servos\u003c\/li\u003e\n\u003cli\u003e9 passive via TPU live hinges\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/li\u003e\n\u003cli\u003eDimensions:\n\u003cul\u003e\n\u003cli\u003eOverall Length: 226mm (8.90in)\n\u003cul\u003e\n\u003cli\u003eFrom wrist base screw to extended finger tips\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/li\u003e\n\u003cli\u003eOverall Width: 195mm (7.68in)\n\u003cul\u003e\n\u003cli\u003eFrom palm to extended thumb\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/li\u003e\n\u003cli\u003eWidth at Palm: 113mm (4.45in)\u003c\/li\u003e\n\u003cli\u003eThickness at Palm: 53.5mm (2.11in)\u003cbr\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/li\u003e\n\u003cli\u003eWeight: Approx. 685g (1.5lbs)\u003c\/li\u003e\n\u003cli\u003eWrist Attachment:\n\u003cul\u003e\n\u003cli\u003eFour M3 screws\u003c\/li\u003e\n\u003cli\u003eWrist adapter converts the four M3 screws to one M12mm-1.50x30mm or 1\/2in-20x1-1\/4in hex cap screw\u003cbr\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/li\u003e\n\u003cli\u003eLift Capacity:\n\u003cul\u003e\n\u003cli\u003eApprox. 27.2kg (60lbs)\u003c\/li\u003e\n\u003cli\u003eUsing four finger hook power grip\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/li\u003e\n\u003cli\u003eElectrical:\n\u003cul\u003e\n\u003cli\u003eInput: RJ45 ethernet connection\n\u003cul\u003e\n\u003cli\u003ePin 1: Gnd\u003c\/li\u003e\n\u003cli\u003ePin 2: Vin (~7.4VDC input)\u003c\/li\u003e\n\u003cli\u003ePin 3: Thumb Base Servo\u003c\/li\u003e\n\u003cli\u003ePin 4: Pinky Servo\u003c\/li\u003e\n\u003cli\u003ePin 5: Ring Finger Servo\u003c\/li\u003e\n\u003cli\u003ePin 6: Middle Finger Servo\u003c\/li\u003e\n\u003cli\u003ePin 7: Index Finger Servo\u003c\/li\u003e\n\u003cli\u003ePin 8: Thumb Servo\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/li\u003e\n\u003cli\u003eEnclosure: Dust and Water Resistant\n\u003cul\u003e\n\u003cli\u003eThe enclosure and standard servos are not waterproof. Exposure to full water submersion or water jets is not recommended and may damage the electronics.\u003c\/li\u003e\n\u003cli\u003eNot certified or tested for international electrotechnical commission (IEC) ingress protection (IP) ratings.\u003cbr\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/li\u003e\n\u003cli\u003eLicensing:\n\u003cul\u003e\n\u003cli\u003eThe fingers and hinges for the robotic hand are adapted from \u003ca href=\"https:\/\/www.thingiverse.com\/thing:242639\" rel=\"noopener noreferrer\" target=\"_blank\"\u003eFlexy-Hand\u003c\/a\u003e \u003cspan\u003eby\u003c\/span\u003e\u003cspan\u003e \u003c\/span\u003e\u003ca href=\"https:\/\/www.thingiverse.com\/Gyrobot\" rel=\"noopener noreferrer\" target=\"_blank\"\u003eGyrobot\u003c\/a\u003e,\u003cspan\u003e used\u003c\/span\u003e\u003cspan\u003e under \u003ca href=\"https:\/\/creativecommons.org\/licenses\/by-nc-sa\/4.0\/\" rel=\"noopener\" target=\"_blank\"\u003eCC BY-NC-SA 4.0\u003c\/a\u003e\u003c\/span\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cspan\u003e\u003ca href=\"https:\/\/jdnelsonpe.com\/collections\/robotic-hand\" rel=\"noopener\" target=\"_blank\"\u003eRobotic Hand\u003c\/a\u003e © 2026 by \u003ca href=\"https:\/\/jdnelsonpe.com\/\" rel=\"noopener\" target=\"_blank\"\u003eJerod Nelson\u003c\/a\u003e is licensed under \u003ca href=\"https:\/\/creativecommons.org\/licenses\/by-nc-sa\/4.0\/\" rel=\"noopener\" target=\"_blank\"\u003eCC BY-NC-SA 4.0\u003c\/a\u003e\u003c\/span\u003e\u003cspan class=\"Yjhzub\"\u003e\u003c\/span\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"Jerod D. Nelson, PE, PLLC","offers":[{"title":"Default Title","offer_id":48173554893041,"sku":null,"price":0.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0796\/8165\/0929\/files\/Front.jpg?v=1780362124","url":"https:\/\/jdnelsonpe.com\/products\/robotic-hand","provider":"Jerod D. Nelson, PE, PLLC","version":"1.0","type":"link"}