Free Worldwide Shipping

SunFounder RC Programmable Robot Elctronic Robotic Arm Kit 4-Axis Servo Control Rollarm for Arduino DIY Robot Kit For Children

View cart→
Product Description
Customer Reviews (0)
Shipping & Payment
Product Details

1) The Rollarm is a 4-axis movement kit customized for robot hobbyists to learn to control the mechanical arm, with detailed user manual, code and introduction videos.

2) 2 controlling manners: manually (by handle) or by computer (LabVIEW).

3) Able to memorize about 100 movements made.

4) Four servos compose and control the four joints, and grippers have double layers with pointed end and jagged edges – to grab objects firmly.

5) Powered by two 18650 batteries (Not Included). This kit need to be assembled before application.

Technical Details


The Rollarm Kit for Arduino is designed for mass hobbyists to learn robot arm control. With the open source MCU Arduino UNO and a servo expansion board, the robot arm is easy to use and full of fun. You can control its four axes by the 4 potentiometers on the handle, as well as make them move on your computer. In addition, it can memorize the movements it’s made and repeat again and again, making it a great tool for repeated tasks.

14 x M1.2×4 Self-tapping Screw

8 x M2x8 Screw

8 x M2 Nut

2 x M3x8 Flat-Head Screw

10 x M3x8 Screw

18 x M3x10 Screw

20 x M3 Nut

4 x M7 Thin Nut

1 x 3x10x1 Washer

5 x M3x10 Aluminium Tube

2 x M3x6 Corn Rivet

3 x φ3xφ8×4 Band Edge Bearing

4 x SunFounderServo (9g)

4 x Potentiometer Button

1 x 18650 2-Battery Holder

1 x SunFounder Mars Board

1 x Expansion Board

1 x Potentiometer Module

1 x USB Type-C Cable

2 x RJ11 Cable

1 x Riband

4 x 3M Non-skid Pad

2 x Heat Shrink Tubing

2 x Cable Clip

1 x 3M Tape

1 x Screw Driver

Self-provided Parts
2 x 18650 Rechargeable Li-ion Battery (3.7V) without protection circuit board

Learning materials:



Shipping & Payment


We are proud to offer international shipping services that currently operate in over 200 countries and islands world wide. Nothing means more to us than bringing our customers great value and service. We will continue to grow to meet the needs of all our customers, delivering a service beyond all expectation anywhere in the world.

How do you ship packages?

Packages from our warehouse in China will be shipped by ePacket or EMS depending on the weight and size of the product. Packages shipped from our US warehouse are shipped through USPS.

Do you ship worldwide?

Yes. We provide free shipping to over 200 countries around the world. However, there are some locations we are unable to ship to. If you happen to be located in one of those countries we will contact you.

What about customs?

We are not responsible for any custom fees once the items have shipped. By purchasing our products, you consent that one or more packages may be shipped to you and may get custom fees when they arrive to your country.

How long does shipping take?

Do you provide tracking information?

Yes, you will receive an email once your order ships that contains your tracking information. If you haven’t received tracking info within 5 days, please contact us.

My tracking says “no information available at the moment”.

For some shipping companies, it takes 2-5 business days for the tracking information to update on the system. If your order was placed more than 5 business days ago and there is still no information on your tracking number, please contact us.

Will my items be sent in one package?

For logistical reasons, items in the same purchase will sometimes be sent in separate packages, even if you've specified combined shipping.

If you have any other questions, please contact us and we will do our best to help you out.


Order cancellation

All orders can be cancelled until they are shipped. If your order has been paid and you need to make a change or cancel an order, you must contact us within 12 hours. Once the packaging and shipping process has started, it can no longer be cancelled.


Your satisfaction is our #1 priority. Therefore, if you’d like a refund you can request one no matter the reason.

If you did not receive the product within the guaranteed time( 45 days not including 2-5 day processing) you can request a refund or a reshipment.
If you received the wrong item you can request a refund or a reshipment.
If you do not want the product you’ve received you may request a refund but you must return the item at your expense and the item must be unused.

  • Your order did not arrive due to factors within your control (i.e. providing the wrong shipping address)
  • Your order did not arrive due to exceptional circumstances outside the control of Discovery Market (i.e. not cleared by customs, delayed by a natural disaster).
  • Other exceptional circumstances outside the control of

*You can submit refund requests within 15 days after the guaranteed period for delivery (45 days) has expired. You can do it by sending a message on Contact Us page

If you are approved for a refund, then your refund will be processed, and a credit will automatically be applied to your credit card or original method of payment, within 14 days.


If for any reason you would like to exchange your product, perhaps for a different size in clothing. You must contact us first and we will guide you through the steps.

Please do not send your purchase back to us unless we authorise you to do so.

Why shop with us

700+ Clients Love Us!

We offer best service and great prices on high quality products

Shipping to 185 Countries

Our store operates worldwide and you can enjoy free delivery of all orders

100% Safe Payment

Buy with confidence using the world’s most popular and secure payment methods

2000+ Successful Deliveries

Our Buyer Protection covers your purchase from click to delivery

Shopping cart