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Combat robot builder

Choose the robot you want to build and we will put together the complete shopping list. Every part comes with a short explanation and proven alternatives. Whatever you already have, just tick it off.

Which robot are you building?

More about this type: Pusher →

  1. Drive motors

    RequiredMissing

    Two geared DC motors drive the wheels. Choose the speed by wheel size: 300–600 rpm gives a controllable robot, 1000 rpm is very fast.

  2. Wheels

    RequiredMissing

    The wheels fit straight onto the N10/N20 motor shaft. A pack contains 2 wheels – one pack is enough for a two-wheeled robot.

  3. Control electronics

    RequiredMissing

    The receiver picks up the transmitter signal and the speed controller (ESC) drives the motors accordingly. Malenki has both on one board, which makes wiring easiest.

  4. Transmitter

    RequiredMissing

    The handset you drive the robot with. Malenki and FS2A use the FlySky AFHDS 2A protocol – if you already own a FlySky transmitter, mark it as “I have it”.

  5. Battery

    RequiredMissing

    A 2S LiPo (7.4 V) with 150–300 mAh. A pusher is fine with a smaller one, a spinner needs more energy (250–300 mAh). Watch the weight – the antweight limit is 150 g.

    We don’t sell this part yet – get it elsewhere, or drop us a line and we’ll advise.

  6. Power switch

    RequiredMissing

    The rules require a power switch accessible from the outside, with marked positions (rule 5.2).

  7. Wires and connectors

    RequiredMissing

    Silicone wire for the power circuit and JST connectors, so the battery can be unplugged and charged outside the robot.

  8. Motor mounts and screws

    RequiredMissing

    Mounts hold the motors in the frame, M2 screws with threaded inserts hold the frame and lid together.

  9. Charger

    RequiredMissing

    A USB-powered balance charger for 2S LiPo batteries.

  10. Safe charging

    Recommended

    Charge and store LiPo batteries in a fireproof bag (rule 3.3). The tester shows the voltage of each cell.

What each robot needs

Parts by robot type. Required parts are marked ✓, recommended ones ○.

PartPusherSpinnerLifter / flipper
Drive motors 2× N20 DC motor with gearbox ✓✓✓
Wheels Rubber wheel for N10 / N20 engines, 2 pcs ✓✓✓
Control electronics Malenki Nano HV ✓✓✓
Transmitter Radio transmitter Flysky FS-i6 ✓✓✓
Battery We don’t sell this part yet – get it elsewhere, or drop us a line and we’ll advise. ✓✓✓
Power switch Slide switch SS12D10 ✓✓✓
Wires and connectors Silicone cable 22 AWG red + black, 2×15 cm + JST connector PH 2.0 male, 2 pins, 5 pcs + JST connector PH 2.0 female, 2 pins, 5 pcs ✓✓✓
Motor mounts and screws N10/20 motor mount, 2 pcs + M2 screw with half-round head L6, 5 pcs + Threaded insert for plastic M2 L3, 5 pcs ✓✓✓
Charger 2S LiPo battery charger ✓✓✓
Weapon motor Brushless motor 1806 2400KV CW + Aluminum lock nut M5 –✓–
Weapon speed controller Speed controller for brushless motor AM32 40A –✓–
Weapon Blade for spinner, diameter 48 mm –✓–
Arm servo Powerful PTK servo supporting 8.4V ––✓
Safe charging LiPo safety bag ○○○
Arm bearings 2× Bearing 3x8x3 ––○
Total103.78 €138.06 €114.04 €

Frequently asked questions

Which parts do I need to build a combat robot?

Every robot needs two drive motors, wheels, control electronics (receiver + speed controller), a transmitter, a 2S LiPo battery, a power switch, wires and screws, plus a charger. A spinner additionally needs a brushless motor, its speed controller and the weapon; a lifter or flipper a strong servo.

What is the difference between Malenki and the FS2A receiver with a speed controller?

Malenki Nano has the receiver and the speed controllers on one board, so it is the easiest to wire and saves space. The FS2A receiver with a dual speed controller is cheaper, but means two boards and more soldering. Both work with FlySky transmitters (AFHDS 2A).

Do I need a transmitter?

Yes, if you control the robot through Malenki or FS2A – any FlySky transmitter with the AFHDS 2A protocol will do. You do not need one if you choose phone control through an ESP32 board (we have a tutorial for it).

Which battery should I use?

A 2S LiPo (7.4 V) with 150–300 mAh. A pusher is fine with a smaller one, a spinner needs more energy. Watch the weight – an antweight robot may weigh 150 g at most.

What else do I need besides the parts?

A frame (easiest to 3D print), a soldering iron and solder, wire cutters and heat-shrink tubing or electrical tape. The steps are in our tutorial How to build a combat robot.