{"product_id":"diy-robotic-arm-mechanic-kit-4dof-acrylic-robot-arm-for-students","title":"DIY Robotic Arm Mechanic Kit 4DOF – Acrylic Robot Arm for Students","description":"\u003ch1\u003eDIY Robotic Arm Mechanic Kit 4DOF – Acrylic Robot Arm for Students\u003c\/h1\u003e\n\n\u003cp class=\"product-lede\"\u003eThis DIY 4DOF acrylic robotic arm mechanic kit provides a laser-cut acrylic structure for building a functional robotic arm, compatible with Arduino, ESP32, and Raspberry Pi for student projects and maker learning.\u003c\/p\u003e\n\n\u003ch2\u003eKey Specifications\u003c\/h2\u003e\n\u003ctable class=\"specs-table\"\u003e\n  \u003ctbody\u003e\n    \u003ctr\u003e\n\u003ctd\u003eMaterial\u003c\/td\u003e\n\u003ctd\u003eAcrylic (laser-cut)\u003c\/td\u003e\n\u003ctd\u003eHigh\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003ctd\u003eDegrees of Freedom\u003c\/td\u003e\n\u003ctd\u003e4 (base, shoulder, elbow, gripper)\u003c\/td\u003e\n\u003ctd\u003eHigh\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003ctd\u003eGripper Type\u003c\/td\u003e\n\u003ctd\u003eMechanical claw, included\u003c\/td\u003e\n\u003ctd\u003eHigh\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003ctd\u003eServo Requirement\u003c\/td\u003e\n\u003ctd\u003e4x standard servos (e.g., MG996R) – not included\u003c\/td\u003e\n\u003ctd\u003eMedium\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003ctd\u003eAssembled Weight\u003c\/td\u003e\n\u003ctd\u003e~350 g (without servos)\u003c\/td\u003e\n\u003ctd\u003eLow\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003ctd\u003eAssembled Dimensions\u003c\/td\u003e\n\u003ctd\u003eApprox. 25 cm × 15 cm × 40 cm\u003c\/td\u003e\n\u003ctd\u003eLow\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003ctd\u003eAssembly\u003c\/td\u003e\n\u003ctd\u003eScrewdriver required; nuts \u0026amp; bolts included\u003c\/td\u003e\n\u003ctd\u003eHigh\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003ctd\u003eControl Compatibility\u003c\/td\u003e\n\u003ctd\u003e5V PWM signals via Arduino, ESP32, Raspberry Pi\u003c\/td\u003e\n\u003ctd\u003eHigh\u003c\/td\u003e\n\u003c\/tr\u003e\n  \u003c\/tbody\u003e\n\u003c\/table\u003e\n\n\u003ch2\u003eWhat You Can Build With This\u003c\/h2\u003e\n\u003cul\u003e\n  \u003cli\u003e\n\u003cstrong\u003ePick-and-Place Station:\u003c\/strong\u003e Arduino Uno drives four servos to move small objects from one tray to another using the Servo library.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eIoT-Controlled Arm:\u003c\/strong\u003e ESP32 hosts a web server that lets you control the arm remotely via Wi‑Fi from a phone or browser.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eObject Sorter:\u003c\/strong\u003e Raspberry Pi with camera runs OpenCV to detect colours and positions the arm to sort items by colour.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eCBSE Class 12 Practical:\u003c\/strong\u003e Demonstrates kinematics and torque using robotic arm motion, ideal for physics investigatory projects or ATL Tinkering Labs.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eSmart India Hackathon Prototype:\u003c\/strong\u003e Build an AI‑powered waste segregation arm that picks and places items based on material recognition.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch2\u003eCompatibility\u003c\/h2\u003e\n\u003ctable class=\"compat-table\"\u003e\n  \u003cthead\u003e\u003ctr\u003e\n\u003cth\u003ePlatform\u003c\/th\u003e\n\u003cth\u003eCompatible\u003c\/th\u003e\n\u003cth\u003eConnection\u003c\/th\u003e\n\u003cth\u003eLibrary \/ Method\u003c\/th\u003e\n\u003c\/tr\u003e\u003c\/thead\u003e\n  \u003ctbody\u003e\n    \u003ctr\u003e\n\u003ctd\u003eArduino Uno R3\u003c\/td\u003e\n\u003ctd\u003eYes\u003c\/td\u003e\n\u003ctd\u003eDigital pins 9,10,11,5 (PWM)\u003c\/td\u003e\n\u003ctd\u003eServo\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003ctd\u003eArduino Nano\u003c\/td\u003e\n\u003ctd\u003eYes\u003c\/td\u003e\n\u003ctd\u003eD3,D5,D6,D9 (PWM)\u003c\/td\u003e\n\u003ctd\u003eServo\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003ctd\u003eArduino Mega 2560\u003c\/td\u003e\n\u003ctd\u003eYes\u003c\/td\u003e\n\u003ctd\u003ePWM pins 2-13\u003c\/td\u003e\n\u003ctd\u003eServo\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003ctd\u003eESP8266 NodeMCU\u003c\/td\u003e\n\u003ctd\u003eYes\u003c\/td\u003e\n\u003ctd\u003eGPIOs with PWM (D0-D8)\u003c\/td\u003e\n\u003ctd\u003eServo (or analogWrite)\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003ctd\u003eESP32 Dev Board\u003c\/td\u003e\n\u003ctd\u003eYes\u003c\/td\u003e\n\u003ctd\u003eAny GPIO (use 4 channels)\u003c\/td\u003e\n\u003ctd\u003eESP32Servo\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003ctd\u003eRaspberry Pi Pico\u003c\/td\u003e\n\u003ctd\u003eYes\u003c\/td\u003e\n\u003ctd\u003eGP0-GP3 (PWM)\u003c\/td\u003e\n\u003ctd\u003eServo or Pico-SDK PWM\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003ctd\u003eRaspberry Pi 4 \/ 5\u003c\/td\u003e\n\u003ctd\u003eYes with condition\u003c\/td\u003e\n\u003ctd\u003eGPIO + external 5V power\u003c\/td\u003e\n\u003ctd\u003epigpio (for stable PWM)\u003c\/td\u003e\n\u003c\/tr\u003e\n  \u003c\/tbody\u003e\n\u003c\/table\u003e\n\n\u003ch2\u003eWiring and Interface Notes\u003c\/h2\u003e\n\u003cp\u003eConnect each servo’s signal wire to a PWM‑capable pin on your board and power all servos from an external 5V 2A supply; never draw servo current from the board’s 5V pin. Ensure a common ground between the microcontroller and the external power source to avoid erratic behaviour. For Raspberry Pi, we strongly recommend a PCA9685 servo driver board connected via I2C if you need jitter‑free control, or use the pigpio library.\u003c\/p\u003e\n\n\u003ch2\u003eFrequently Asked Questions\u003c\/h2\u003e\n\u003cdiv class=\"faq\"\u003e\n  \u003cdiv class=\"faq-item\"\u003e\n    \u003ch3\u003eAre the servo motors included in the kit?\u003c\/h3\u003e\n    \u003cp\u003eNo, this kit contains only the mechanical acrylic parts, screws, and nuts. You must purchase four standard servos (MG996R or SG90) separately.\u003c\/p\u003e\n  \u003c\/div\u003e\n  \u003cdiv class=\"faq-item\"\u003e\n    \u003ch3\u003eHow much weight can the arm lift?\u003c\/h3\u003e\n    \u003cp\u003eWith typical hobby servos, the arm can lift 100–150 g. For heavier payloads, upgrade to high‑torque metal‑gear servos and reinforce the base.\u003c\/p\u003e\n  \u003c\/div\u003e\n\u003c\/div\u003e\n\n\u003cscript type=\"application\/ld+json\"\u003e\n{\n  \"@context\": \"https:\/\/schema.org\",\n  \"@graph\": [\n    {\n      \"@type\": \"Product\",\n      \"@id\": \"https:\/\/compoden.in\/products\/diy-robotic-arm-mechanic-kit-4dof-acrylic-robot-arm-for-students#product\",\n      \"name\": \"DIY Robotic Arm Mechanic Kit 4DOF – Acrylic Robot Arm for Students\",\n      \"description\": \"DIY 4DOF acrylic robot arm kit for Arduino, ESP32, Raspberry Pi. Student-friendly, laser-cut parts. Learn robotics. Rs3039. 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