Comments by Costin B.

  • Brandon's mini sumo robot: Black Mamba

    Brandon's mini sumo robot: Black Mamba

    - 18 August 2017

    Hi. You said that the HPCB 50:1 ratio motors offer a very good balance of speed and torque for mini-sumo robots. Can you please indicate a guide or some other kind of documentation so I can study more on the subject? I am intending to design a mini-sumo robot that should be slow, but have a lot of torque so it can push the opponents out of the ring and, at the same time, have good enough sensors and algorithms in order to always be facing the opponent so it would never be caught from behind or from the side. Even more, I intend to be very careful with the blade and chassis designs and with the weight distribution so the opponent would have a hard time getting under my robot's blade. I already covered the sensor and data processing problems. Choosing good motors is the last of my big problems.

    I used DC motors from Pololu before (10:1 ratio for line follower robots and I was extremely pleased with the results) so I'm quite familiar with them, but it's the first time I'm trying to build a mini-sumo robot and I don't know what gear ratio to choose. I was thinking of trying 150:1 (200rpm, 40 oz-in) or even 210:1 (140rpm, 50 oz-in), but my fear is that these motors are going to be too slow, despite being very powerful.

    Any advice would be greatly appreciated.

    Thanks in advance.

    Costi.

    :)

New Products

3.3V Step-Up/Step-Down Voltage Regulator S8V9F3
VL53L7CX Time-of-Flight 8×8-Zone Wide FOV Distance Sensor Carrier with Voltage Regulator, 350cm Max
15V, 2.7A Step-Down Voltage Regulator D30V30F15
3.3V, 2.5A Step-Up/Step-Down Voltage Regulator S13V25F3
MinIMU-9 v6 Gyro, Accelerometer, and Compass (LSM6DSO and LIS3MDL Carrier)
Zumo 2040 Robot (Assembled with 50:1 HP Motors)
Motoron M2T550 Dual I²C Motor Controller (Header Pins Soldered)
7.5V, 2.5A Step-Up/Step-Down Voltage Regulator S13V25F7
3pi+ 2040 Control Board
3pi+ 2040 Robot - Standard Edition (30:1 MP Motors), Assembled
Log In
Pololu Robotics & Electronics
Shopping cart
(702) 262-6648
Same-day shipping, worldwide
Menu
Shop Blog Forum Support
My account Comments or questions? About Pololu Contact Ordering information Distributors