Project LiftOff

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Revision as of 19:57, 9 March 2021 by JimKazmer2 (talk | contribs)

Project LiftOff is a 3lbs MeltyBrain (a robot that moves using translations drift as its entire body spins at 1000 to 3000 RPM.

For 2021, Project LiftOff is beginning its third major revision.

Project LiftOff - March 2019 (rev 1.0)
  • Rev-1.0 : March 2019
    • Processor: Arduino Nano
    • Accelerometer: common MPU 6050 (+/- 16g 12 bits)
    • Receiver Interface: standard RC-PWM into UART
    • Motor Control: OneShot125 via PWM manipulation @ ~800Hz
    • External Sensors: none
  • Rev-1.1 May 2019
    • switched from 8" Aluminum rings to 9" AR-500 ring with tooth (and hand cut HDPE)
      • this AR-500 tooth proved to be too pointed and became embedded in arena wall several times
Project LiftOff - May 2019 (rev 1.1)
Project LiftOff - August 2019 (rev 1.2)
Project LiftOff - August 2019 (rev 1.15)
  • Rev-2.0 : 2020
    • Processor: Teensy 4.0
    • Accelerometer: none… used motor eRPM telemetry from ESCs via bidirectional dShot
    • Receiver Interface: RC-SBUS into UART
    • Motor Control: dShot600 via SPI manipulation @ 8000Hz
    • External Sensors: active IR
    • CNC'd HDPE body
    • New 8" AR-500 ring and tooth (with a more blunt tip)
Project LiftOff - July 2020 (rev 2.0)
Project LiftOff - July 2020 (rev 2.05)
Project LiftOff - September 2020 (rev 2.1)
  • Rev-3 : 2021 Same electronics as Rev-2; improved algorithm, wheel orientation, and return to accelerometer.
    • Processor: Teensy 4.0
    • Accelerometer: H3LIS331DL (+/- 400g 16 bits)
    • Receiver Interface: RC-SBUS into UART
    • Motor Control: dShot600 via SPI manipulation @ 8000Hz
    • External Sensors: active IR

Robot Facts

The first appearance was at the March 2019 NHRL event. The very first version used an 8" diameter aluminum pipe cut into two 1/2" thick slices with a notch cut out for the AR500 tooth (with two bolt holes).

Driver Andrew Kazmer (mostly) Jim Kazmer (sometimes)
Weight Class 3lb
Body Material HDPE (CNC) + AR500
Weapon Horizontal Body Spinner, 1360 grams
Weapon Drive see below
Drive 2 x FliteTest 2218 Brushless Motor, direct drive
Power 2x4S 650mah LiPo

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Tournament Results

2020

NHRL January Did Not Compete
NHRL July 1
NHRL July 2
NHRL September
NHRL November Did Not Compete
Changes being Considered