Welcome to robot wars!
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Antweight robot wars rules:

  • Official Rules
  • Dimensions:
    1. 150g weight;
    2. Must fit within a 10 cm cube;
  • Weapons:
      • The following weapon types are not permitted:
        • Fluid based weapons (treacle guns, etc.)
        • Glue or sticky pad weapons
        • String or entanglement weapons
        • Flame based weapons
        • The use of electricity as a weapon
        • Explosive weapons
        • Rotating weapons that may shatter (as opposed to breaking off)
        • Magnetic/inductive systems
      • Permitted weapons:
        • Sharp weapons
        • Rotating weapons that do not shatter
        • Wedges
        • Rollers
        • Any other weapon that does not fit in the not permitted category








RCReceiver
E

Based on a scorpion design it uses plastic as a base for all of the components. A servo is mounted sideways to which a scorpion tail shaped weapon is attached.


RCReceiver
Rotating cutter

A plastic potato cutter was used as a base to attach all of the remaning components. In this case a cutting knife has been taped to a servo.


RCReceiver
Front lifter

Polyethilene has been cut, N20 Dc motors have been used for the wheels. A servo has been positioned sideways and attached to flat piece of plastic that pulls the front wedge up.


RCReceiver
Frontal can

A round can has been squared and some holes made on its side to fit the motors. Tape has been used to stick everything together.


RCReceiver
Foam pusher

Simple box design using foam and hot glue with a base made of hot glued wooden sticks.


RCReceiver
Carboard pusher

Simple box design using carboard and tape.


RCReceiver
Coolbeans

Both sides of the can have been opened to make space for the motors, the motors inside have been hot glued to the can. A front piece of plastic stops the can from rolling on itself.


RCReceiver
3D printed wedge

This wedge was 3d printer with already made holes for the continuous servo motors.



List of setups:


Just the basics:

This setup doesn’t require any programming or knowledge of electronics, just plug and play! It is cheap and effective, this way you can focus on building the chassis of your dreams.

You will need:


continuousServo
2x continuous servo motors with wheels

Whereas normal servos are position controlled, continuous servos are speed controlled. They are slower than DC motors but their advantage is that they can be directly plugged into the RC receiver.

Buy

RCReceiver
1x RC receiver

Receives signals from the rc transmitter, can be used to plug in all the other components.

Buy

1SLiPo260mAh
1x 1S LiPo battery (3.7 V, 260mAh)

A very compact battery that can provide a lot of current to the system. Ideal for supplying motors. The number before the S represents the number of 3.7 voltage cells in the battery. 2S would be 2 x 3.7 = 7.4 volts. The capacity is 260mAh, it means that if a steady current of 260 milliAmperes were drawn from a fully charged battery then the battery would last one hour. Sometimes the battery will have to be changed before the predicted time. This is because as the battery discharges its voltage will drop and this lower voltage may or may not allow the circuit to work properly, digital circuits are especially susceptible to this, since they require, for example the Arduino, 5 volts or above to work.

Buy

More power:

This setup is easy to assemble and doesn’t require any programming, it allows for a more powerful robot, but it is more costly.

You will need:


N20Wheels
2x N20 Brushed Motor compatible wheels

Easy to fit on the shaft of a DC brushed motor because of their shape, doesn't require any glue or fittings.

Buy

N20DCMotor
2x N20 Micro Metal Gear Motor

They are to most commonly used motors, depending on their internal gear ratio they come in 400, 500, 600 rpm (top speed). The 400 rpm is slower but more powerful. Requires soldering of the motor leads. When selecting a battery for a system with a DC motor then remember that: the higher the voltage applied to a motor, the higher the speed. While the higher the force required by the motor to move, the higher the current it's going to draw.

Buy

ESC
1x Bidirectional Brushed Motor ESC

ESC stands for Electronic Speed Controller. They come in all varieties suitable for different types of motors. Specifically, this device connects to 6-12 Volt Brushed DC motors and controls their speed based on the signal from the receiver. No programming or manual configuration required.

Buy

RCReceiver
1x RC receiver

Receives signals from the rc transmitter, can be used to plug in all the other components.

Buy

2SLiPo180mAh
1x 2S LiPo battery (7.4 V, 260mAh)

A very compact battery that can provide a lot of current to the system. Ideal for supplying motors. The number before the S represents the number of 3.7 voltage cells in the battery. 2S would be 2 x 3.7 = 7.4 volts. The capacity is 260mAh, it means that if a steady current of 260 milliAmperes were drawn from a fully charged battery then the battery would last one hour. Sometimes the battery will have to be changed before the predicted time. This is because as the battery discharges its voltage will drop and this lower voltage may or may not allow the circuit to work properly, digital circuits are especially susceptible to this, since they require, for example the Arduino, 5 volts or above to work.

Buy

Index


Servos

RCReceiver
SG90 Servo

Cheap, small, effective.

Buy

mg90s
MG90S Servo

Stronger, larger, high lifting power

Buy

Building materials


foamboard
Foam Board

Light-weight, easy to cut with a knife cutter and quite sturdy. Recommended thickness of 3mm or less.

Buy

cardboard
Cardboard

Light weight, also easy to cut and very cheap, it can be recycled from old packaging. Comes in all shapes and sizes. Good as extra armor and padding.

Buy

polycarbonate
Polycarbonate, acrylyc, acetate sheet

Very resistant, can handle most attacks at this level. 1.5 mm thicknesses can be cut with scissors. Being hard to bend it can be used to create weapons and wedges to get under your opponents.

Buy

dpla
3D Printed Chassis

With 3D printing you can create very precise wedges and shapes, the material is resistant to most attacks and very lightweight. You can design the chassis on student free CAD software such as Fusion 360 or Google Sketchup then send the STL it to a slicing software to generate the 3D-printable GCODE file. Some 3D printers open for access to Queen Mary students are in the maker space.


differentpackaging
Household Items

Straws, old bottles, old tupperware, tin cans, aluminium foil etc... can be used to create interesting robots.


nutsandbolts
Nuts, bolts and screws

They are the most reliable and safe way of binding all of your components together, however they arequire more space and planning. Reccomended size of M2.

Buy

hotglue
Hot glue

Hot glue is stronger than tape and very useful if you are short on time.


tape
Tape

Tape is useful. Most builds only use tape. Any kind of tape will work but the stickier the better!