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Description
Waveshare 4-DOF Metal Robot Arm Kit for micro:bit, Support Bluetooth, US PlugOverview 1. Equip your micro: bit with this 4 DOF metal robot arm, and get started to explore the world of artificial intelligent robotic. 2. This starter robotic arm kit includes: servo driver board, metal mechanical arm structure, and 4x metal gear servos. When used with the micro: bit, it is easy to control the arm by smart phone through Bluetooth connection. The Servo Driver Adopts Servo Driver for micro: bit: 1. Micro: bit edge connector,
Overview1. Equip your micro:bit with this 4-DOF metal robot arm, and get started to explore the world of artificial intelligent robotic.
2. This starter robotic arm kit includes: servo driver board, metal mechanical arm structure, and 4x metal gear servos. When used with the micro:bit, it is easy to control the arm by smart phone through Bluetooth connection.
The Servo Driver
Adopts Servo Driver for micro:bit:
1. Micro:bit edge connector, directly pluggable
2. I2C controlled, using only 2 pins
3. Up to 16-Channel servo/PWM outputs, 12-bit resolution for each channel (4096 scales)
4. Integrates 5V regulator, up to 3A output current, can be powered from battery through VIN terminal
5. Standard servo interface, supports common used servo such as SG90, MG90S, MG996R, etc.
6. Reserved I2C control pins, allows to work with other control boards
7. Comes with development resources and manual (micro:bit graphical examples like Bluetooth/2.4G wir eless remote control)
The Robot Arm Structure
1. 4-DOF, large solid base, metal mechanical grasper
2. Full aluminium alloy body, sandblasting oxidation surface, strong & durable
3. Clever mechanical structure and mounting design, agile to control, easy to build
3. Fitted with 4x metal gear servos (1x MG996R, 3x MG90S), large torque force, smooth moving
Package Include
Note: micro:bit is NOT included.
1. Metal arm parts x1
2. MG996R Servo x1
3. MG90S Servo x3
4. MG996R servo wheel x1
5. Servo Driver for micro:bit x1
6. Power adapter US plug 5V 3A Micro x1
7. Servo extension wire 150mm x1
8. Screws pack x1
9. Screwdrivers 2PCS x1
Specification:
| Package Weight |
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Shipping Notes
- Free Standard Shipping on $100+ Orders to the USA.
- Except Preorder products are shipped in 48 hours.
- Delivery to the USA:
- Standard Shipping : 3-10 business days
- If time is of the essence, please consider selecting expedited delivery for faster service.
Exchange/Return Notes
- We offer a 30-day return/exchange service after receiving.
- Final sale items are not eligible for returns or exchanges.
- To process your return/exchange, please contact us at [email protected]
- Please click here for more details>>> Return & Exchange Policy
4.3 ★★★★★
Based on 8 reviews
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Product Reviews
★★★★★ 3
Backrest does not adjust in and out
Color: Black
Very comfortable but I wish the back rest was adjustable. It’s too far back to offer any support.
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Reviewed in the United States on April 2, 2026
★★★★★ 5
Excellent value for money!
Size: 934W-Z, Color: Black, Size: 934W-Z, Color: Black
I absolutely love this office chair! I needed a chair that could support my standing desk without sacrificing comfort, and this one completely exceeded my expectations. It's incredibly sturdy and durable, well-made, and the height adjustment is super convenient, making it easy to find the perfect fit. Even during long hours of work, the seat is comfortable, and the ergonomic design effectively reduces pressure on my back and legs. I love its clean, modern look—it fits my home office perfectly. Assembly was quick and easy, and for this price, the quality is absolutely fantastic!
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Reviewed in the United States on February 24, 2026
★★★★★ 5
Perfect chair!
Size: 934-Z, Color: Blue, Size: 934-Z, Color: Blue
I have an adjustable-height desk (also purchased from Amazon) and needed a drafting chair for those times when my body gets tired of standing. This chair fits the bill and then some! I put it together myself; it took me about an hour, but would take me about half that next time, since now I know what to do (and what NOT to do!). All the parts were there; there are even spare parts (see photo). All the holes were drilled in exactly the right places, too, which isn't always the case when I buy things from Amazon (my standing desk is a great example). The chair fits me; I'm short (5'3.5"), and often the seats of furniture are too deep for me to rest my feet flat on the floor. The depth of the seat on this chair is just a little over 18 inches, and with the adjustable footrest ring, it's perfect. I don't think a tall or heavy person would fit in it, to be honest. But it's perfect for those of us who are vertically challenged. I love that it glides easily on my hardwood floors and that it turns 360 degrees. The chair comes in numerous luscious colors, so take your pick! It is very sturdy, has good lumbar support, and the seat and seat back are very comfortable. And the arms flip up, which was an absolute must when I was shopping for this chair. I got it on sale, too -- $109.00 -- and I'm delighted with this purchase.
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Reviewed in the United States on April 23, 2026
★★★★★ 5
Excellent adjustable drafting chair
Size: 934-Z, Color: Blue
Excellent chair design, extremely comfortable and exceptionally easy instructions to follow making for simple assembly. Love the amply wide cushioned seat and ergonomic backrest. The height adjustment feature works perfectly as well as positioning of the foot ring . Having the ability to raise the arms is also a big plus! I highly recommend this product for attractive appearance, comfort features, functionality and operation. Really nice chair!
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Reviewed in the United States on April 13, 2026
★★★★★ 4
Comfortable, stylish, and perfect for long work hours 💗✨
Size: 934-Z, Color: Pink
I bought this chair because I spend a lot of time working and needed something comfortable but also stylish, and I absolutely love it.
Since I started using it, I feel much better support in my back thanks to the lumbar support. It makes a big difference, especially during long work hours. The adjustable footrest is also a feature I didn’t know I needed, but now I use it all the time.
The flip-up armrests are very convenient because I can adjust them depending on what I’m doing or move them out of the way when needed.
The pink color is beautiful and adds a soft, elegant touch to my workspace. It looks great in a modern home office.
It feels sturdy, well-made, and very stable. Overall, it’s a great purchase that improved both my comfort and the look of my workspace.
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Reviewed in the United States on April 29, 2026