Parallel Gripper Force Controller Kit with Arduino Uno + Stepper Motor
Build a Force-Controlled Parallel Gripper with Arduino Uno & Stepper Motor
Every part needed, pre-tested for compatibility, with an AI build companion trained on this exact project. Shipped from Bengaluru in 3-5 days.
Precision gripping is the backbone of industrial automation — but how do you ensure a robot hand doesn't crush a delicate object? With this kit, you'll build a parallel gripper that uses a load cell to measure grip force in real time and a PID controller on an Arduino Uno to maintain exactly the force you set. The NEMA 17 stepper motor drives the jaws, and the OLED display shows live force readings, turning you into a motor motion control expert.
What You'll Build
A fully functional parallel gripper with adjustable force control. You will mount the load cell on the jaw, wire the HX711 amplifier and OLED display, program the Arduino to run a PID loop, and watch the stepper motor adjust jaw position to maintain your target force — whether you're lifting an egg, a PCB, or a glass vial. The final assembly is a compact, benchtop mechatronic system ready for further automation projects.
What You'll Learn
- Closed-loop control systems using PID algorithms on Arduino Uno
- Interface strain gauge load cells with the HX711 24-bit ADC
- Drive stepper motors precisely using an A4988 driver and microstepping
- Visualize real-time sensor data on a 0.96-inch OLED display
Kit Contents
| Component | Quantity |
|---|---|
| Arduino Uno R3 | 1 |
| NEMA 17 Stepper | 1 |
| A4988 Driver | 1 |
| HX711 + 1kg Load Cell | 1 |
| 0.96in OLED | 1 |
| 100nF Caps | 5 |
| 12V 2A PSU | 1 |
| PCB Prototype Board | 2 |
| Aluminium Plate | 2 |
| M3 Bolts+Nuts | 10 |
| Soldering Iron | 1 |
| Solder Wire | 1 |
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
This kit is designed for B.Tech ECE/EEE/Mechanical students working on mechatronics or robotics projects, especially those preparing for Smart India Hackathon or final-year capstone submissions. It’s also perfect for IIT, NIT, VIT, and BITS Pilani enthusiasts diving into closed-loop motor control, and for advanced hobbyists who’ve mastered Arduino basics and want to explore force-feedback systems.
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 inside the box to open the AI companion — it walks you through wiring, code, and PID tuning step by step. You can also message us on WhatsApp for direct help from our support team.
Do I need prior experience with PID or stepper motors?
While this is an advanced kit, the AI companion explains every concept from PID theory to A4988 microstepping. Basic familiarity with Arduino programming and electronics is recommended to get the most out of this project.
Can I use this gripper to handle fragile objects like test tubes or raw eggs?
Absolutely. The 1 kg load cell provides fine resolution; once you tune the PID gains using our step-by-step guide, you can reliably grip objects as delicate as an eggshell or a glass vial without damage.
What if a component is missing or defective?
We pre-test every component before packing. In the rare case something is missing or has a manufacturing defect, just let us know within 7 days — we’ll ship a free replacement from Bengaluru immediately.
Stepper drives parallel gripper jaws. HX711 load cell in jaw measures grip force. PID holds target force.
What's in this kit
- Arduino Uno R3
- NEMA 17 Stepper
- A4988 Driver
- HX711 + 1kg Load Cell
- 0.96in OLED
- 100nF Caps x5
- 12V 2A PSU
- PCB Prototype Board x2
- Aluminium Plate x2
- M3 Bolts+Nuts x10
- Soldering Iron
- Solder Wire
Choose your assembly option:
- Soldering Kit — 25W soldering iron, 60/40 solder wire, flux, and small perfboard for permanent assembly.
- Breadboard Combo — 800-point full-size breadboard with 65-piece jumper wire pack for solderless prototyping.
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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