Waveshare 4-DOF Metal Robot Arm Kit for Raspberry Pi, Bluetooth/WiFi
Enhances AI exploration with 4-DOF robotic arm
Features durable full aluminum alloy body
Controls seamlessly via Bluetooth or WiFi
Supports up to 16-channel PWM outputs
Includes development resources and manual
The Waveshare 4-DOF Metal Robot Arm Kit for Raspberry Pi, Bluetooth/WiFi is an advanced robotic arm designed to enhance the exploration of artificial intelligence and robotics. This kit is equipped with a servo driver HAT, a robust metal mechanical arm structure, and four metal gear servos, providing a comprehensive solution for robotics enthusiasts. The arm is easily controlled via a smartphone through Bluetooth or WiFi when integrated with a Raspberry Pi.
The servo driver HAT features a standard Raspberry Pi 40PIN GPIO extension header, making it compatible with Raspberry Pi series boards and Jetson Nano. It is I2C controlled, requiring only two pins, and supports up to 16-channel servo/PWM outputs with a 12-bit resolution for each channel. The integrated 5V regulator can deliver up to 3A output current, and the device can be powered from a battery through the VIN terminal. The standard servo interface supports commonly used servos, and reserved I2C control pins allow for compatibility with other control boards.
The robot arm itself boasts a full aluminum alloy body with a sandblasting oxidation surface, ensuring durability and strength. Its clever mechanical structure and mounting design make it agile to control and easy to assemble. The arm is fitted with four metal gear servos, providing large torque force and smooth movement, making it an ideal tool for both beginners and advanced users in the field of robotics.
1x Waveshare 4-DOF Metal Robot Arm Kit for Raspberry Pi, Bluetooth/WiFi
1x Metal arm parts
1x MGR servo
3x MGS servo
1x MGR servo wheel
1x Servo driver hat
1x Options power adapter
1x Servo extension wire 150mm
1x Screws pack
1x Screwdrivers 2pcs
1x USB micro-b to USB-C adapter
4-DOF with a large, solid base and metal mechanical grasper
Full aluminum alloy body with sandblasting oxidation surface; strong and durable
Clever mechanical structure and mounting design; agile to control and easy to build
Equipped with 4 metal gear servos; large torque force and smooth movement
Utilizes Servo Driver HAT with a standard Raspberry Pi 40PIN GPIO extension header; supports Raspberry Pi series boards and Jetson Nano
I2C controlled using only 2 pins
Supports up to 16-channel servo/PWM outputs with 12-bit resolution for each channel (4096 scales)
Integrates a 5V regulator with up to 3A output current; can be powered from a battery through the VIN terminal
Standard servo interface; supports commonly used servos
Reserved I2C control pins; allows operation with other control boards
Includes development resources and manual with examples in Python, such as Bluetooth/WiFi remote control
If you are not satisfied with a product purchased from the Site, you may request a return within 30 days from the delivery date, unless the product is listed under the Return Exceptions below or is subject to specific return conditions noted on the product page.
This return policy also applies, as a minimum standard, to products sold and fulfilled by third-party vendors through the Marketplace.
United Kingdom consumers exercising their statutory Right of Cancellation are subject to different conditions. See the Statutory Right of Cancellation.
Returns under this policy concern non-defective products. In the case of a confirmed manufacturing defect, remedies are handled under the Warranty terms, at the Vendor's discretion. See the Warranty section.
Return Conditions
To qualify for a refund under the 30-day return policy, all of the following conditions must be met:
A valid Return Authorisation (RA) number must be obtained prior to returning the product. Returns without an RA number will be refused.
The RA number is valid for 30 days. The returned item must be received within that period.
The RA number must be included with the return.
Products must be returned in unused, unmodified condition (e.g., no scratches, alterations, missing parts, or signs of installation/use) and in their original packaging, suitable for resale.
Shipping fees are non-refundable. Return shipping costs are the responsibility of the customer, except in cases of a product confirmed defective through RobotShop's troubleshooting process or of a verified shipping error by RobotShop.
Refunds are processed within 7 days after receipt and inspection of the returned item.
A £100 cleaning fee may apply to domestic robots returned in used or unclean condition.
A 20% restocking fee may apply to large-quantity returns of items ordered specifically for the customer from the manufacturer or not part of RobotShop's standard inventory.
Return Exceptions
The following products are not eligible for return or refund under this policy:
Used, damaged, or modified products — Items that show signs of use, wear, or alteration, making them unsuitable for resale.
Consumables * — Use and wear-and-tear components, altered or depleted through use (e.g., batteries, belts, brushes, gears, filament, tyres, disposable bags, lubricants, greases, waxes, etc.). Not eligible for return once opened or used.
Perishables — Goods liable to deteriorate or expire rapidly. Not eligible for return.
Sealed goods (health or hygiene) — Items sealed for health-protection or hygiene reasons (e.g., masks, gloves, odour-absorbing products). Not eligible for return once unsealed.
Build-it-yourself products and items requiring customer assembly * — Including robots & kits, robot parts, and other products requiring assembly or soldering. Not eligible for return once assembled, soldered, or installed.
Digital Goods, Software, and Apps * — Final sale only, due to licensing restrictions.
Clearance Items * — Products identified as clearance or final sale, including end-of-life or discontinued items.
Custom-made, personalized, or special-order items — Products manufactured, configured, adapted, or built to the customer's own specifications and requirements.
On-Demand Items * — Standard catalogue products not stocked by RobotShop and ordered specifically to fulfil a customer request.
* United-Kingdom consumers retain their statutory Right of Cancellation on these items. Its exercise is subject to the conditions and exclusions set out in the Statutory Right of Cancellation, and any reimbursement may be reduced to reflect a loss in value resulting from handling beyond inspection.
How to Request a Return Authorisation (RA)
While the same return policy applies, these orders require a separate contact process for returns.
RobotShop Fulfilled Orders → submit a support ticket from your account under My Support Tickets.
Marketplace Vendor Orders → submit a ticket from your account under My Marketplace Tickets to contact the vendor directly.
Note: Marketplace vendor products are normally labelled with SKUs starting with RM, and identified on the product page with the mention "Sold and fulfilled by [Vendor Name]".