Miros – 3lb Combat Robot
- I designed and built Miros to be a control robot, which utilizes a fast spinning blade on a hammer to puncture opponents from the top where the armor is weakest
- Front forks disengages opponents’ wheel contact and acts as a counterweight for when the hammer swings
- 3D Printed 95A TPU chassis allows robot to absorb impact, disperse energy, and serve as ablative armor
Drivetrain
- Two brushless Repeat Drive Pro motors direct drive the robot at 15.2 ft/s, enabling the robot to maneuver around robots and pin them down
- Drive motors mounted with screws on shock absorbent TPU to redirect energy away and prevent damage to motors
- Custom molds made out of TPU to cast 2″ OD 40A urethane treads with a 3D printed onyx filament wheel core
- Urethane deforms over small bumps while providing high traction and acceleration
Arm Hammer
- One brushless Repeat Drive Pro motor connects to the arm via two Onyx 3D printed pulleys and a XL belt with a ratio of 4:3
- Motor mounts onto UHMW A frames, which support the center of the robot’s TPU chassis
- Arm is made out of two machined UHMW plates since they are light, strong, ablative, and cheap.
Weapon System
- 1700 kv RDY Mini 5022-V2 hub motor at 14.8V connects directly to the weapon blade spinning at 300 mph
- Weapon blade made out of AR 500 Steel with a diameter of 4″ and a thickness of 3/16″
- I performed FEA on the blade to decrease stress points and maximize bite
Electronics
- Tattu R-Line 4S 750mah 95c Battery to power all electronics
- Fingertech mini power switch used to safely turn the robot on and off
- 3 Repeat Pro R2207-2500kv Motors
- RDY Mini 5022 1700kv Hub Motor
- 3 Repeat AM32 Single Drive ESC to control the Repeat Pro motors
- FS2A-4CH Receiver to allow for communication between robot and Flysky FS-i6 controller
- 5V output BEC to power the receiver
- 470 µF 50V Capacitor to absorb voltage spikes when weapon motor hits opponent
Weapon & Power Calculations
First Fights