6DOF Robot Arm with Potentiometers
Control a 6DOF Robot Arm with Potentiometers: Arduino Motion Control Kit
Every part needed, pre-tested for compatibility, with an AI build companion trained on this exact project. Shipped from Bengaluru in 3-5 days.
Build a six-degree-of-freedom robotic arm that bends, twists, and reaches under your direct command. Instead of pre-scripted routines, you turn six potentiometer knobs to move each joint in real time — just like an industrial teach pendant used in factory automation. This kit merges classic analog control with modern Arduino servo driving, giving you an intuitive way to explore torque, range-of-motion, and feedback loops.
What You'll Build
An articulated robot arm with six SG90 servos driving shoulder, elbow, wrist, and gripper movements. You’ll wire the potentiometers to the Arduino’s analog inputs, read each knob’s position, and map it to precise servo angles through the PCA9685 I2C driver. The outcome is a responsive, knob-to-joint control system that lets you pose the arm exactly as desired — no serial monitor, no delay. The modular wiring approach also makes it easy to swap in longer servos or attach custom end-effectors later.
What You'll Learn
- Interfacing multiple servos with the PCA9685 I2C driver for glitch-free, multi-channel control
- Reading potentiometer analog signals and scaling them to servo pulse widths in Arduino code
- Calibrating servo angles to match mechanical joint movement, avoiding over-extension and binding
- Debugging real-time control loops and managing power supply decoupling for stable, jitter-free motion
Kit Contents
| Component | Quantity |
|---|---|
| Arduino Uno R3 | 1 |
| PCA9685 Servo Driver | 1 |
| SG90 Servo | 6 |
| 10kΩ Potentiometer | 6 |
| 5V 3A Power Supply Unit | 1 |
| 100nF Ceramic Capacitors | 5 |
| 1000µF 25V Electrolytic Capacitors | 2 |
| 400-point Breadboard | 1 |
| Male-Female Jumper Wires | 25 |
| Male-Male Jumper Wires | 15 |
Why Buy This Kit Instead of Sourcing Parts Separately
| Factor | Sourcing Separately | Compoden Kit |
|---|---|---|
| Compatibility checks | You verify every part | Pre-tested as a system |
| Build support | Forums and scattered tutorials | AI companion trained on this exact project |
| Time to first working build | Days of debugging | Hours, with step-by-step guidance |
| Shipping coordination | Multiple sellers, multiple delays | One shipment from Bengaluru in 3-5 days |
Who This Kit Is For
Ideal for CBSE Class 11–12 students exploring robotics as part of their curriculum, B.Tech ECE/EEE undergraduates building motion control projects, and ATL Tinkering Lab facilitators looking for a hands-on demonstration of analog-to-digital conversion and servo feedback. It’s equally suitable for Smart India Hackathon teams prototyping prosthetic or industrial robot arms, and for IIT/NIT/VIT/BITS project groups who need a reliable, pre-validated motion subsystem.
Built and Backed by Compoden
Every Compoden kit ships with an AI build companion trained on this exact project — accessible via a QR code on the box, with WhatsApp and email backup. We've spent 10 years building projects for makers, schools, and institutions across India. If a part fails because of a manufacturing defect, replace it free within 7 days.
What if I get stuck during the build?
Scan the QR code included in the box to talk to the AI companion trained on this specific project. It can diagnose wiring, code mapping, and power issues in seconds. For trickier problems, WhatsApp backup from our Bengaluru team is just a message away.
Does the kit include the mechanical robot arm chassis?
No, the kit provides all electronics to drive a 6DOF arm — you supply the mechanical structure. Many builders use laser-cut acrylic, 3D-printed parts, or even cardboard and popsicle sticks to create the frame. The electronics are flexible enough to work with any lightweight arm design.
Can I adapt this kit for wireless control instead of potentiometers?
Yes. Once you understand the analog mapping, you can replace the pots with a Bluetooth or Wi-Fi module to receive commands from a smartphone or joystick. The base schematic and PCA9685 driver remain identical; only the input source changes.
The servos jitter or twitch when I turn multiple potentiometers. How do I fix it?
Jitter usually comes from power supply noise. Plug in the included 1000µF capacitors across the servo power rails and place 100nF caps near each servo’s VCC pin. The 5V 3A PSU is sized to handle all six SG90s, but if your frame causes binding, reduce the load or adjust the servo’s mechanical limits in code.
Six servos on PCA9685 driver controlled by six potentiometers. Each pot moves one joint directly.
What's in this kit
- Arduino Uno R3
- PCA9685 Servo Driver
- SG90 Servo x6
- 10kΩ Potentiometer x6
- 5V 3A PSU
- 100nF Caps x5
- 1000µF 25V Caps x2
- 400-pt Breadboard
- M-F Wires x25
- M-M Wires x15
Other projects you can build
Shipping Information
- Prepaid Orders: ₹75 for orders up to ₹999, FREE shipping above ₹999
- COD Orders: ₹125 shipping + ₹50 COD fee = ₹175 total
- Delivery Timeline: Dispatch in 1-2 days, delivery in 2-7 days depending on location
Returns & Warranty
- 7-Day Return: Manufacturing defects only (approval required)
- Warranty: 7 days from delivery
- Non-Returnable: Batteries, consumables, cut wires, clearance items