1st Law

From NHRL

Robot Facts

CAD view of 1st Law

1st Law is a 3lb modular robot designed to have a large variety of modular weapon types.

As of November 2022, 1st Law is in its second major iteration.

Builder/Driver Nathan Cai
Team DEISy Robotics
Weight Class 3lb
Body Material TPU / UHMW / Aluminum
Weapon Modular - Vertical / Horizontal Bar Spinner
Weapon Drive Aerosky 4822 690kv
Drive 2WD - Rectified Robotics Brushless Planetary
Power Tattu 4S 850 mAh LiPo

What is 1st Law?

1st Law was my (Nathan Cai) attempt to build a reliable and versatile robot that could use facilitate a large variety of weapon types. 1st Law is a simplified 3lb variant of DEISy Robotics' 2020 season BattleBots Submission, 3rd Law, and a functional iteration of failed 3lb 3rd Law, 0.3rd Lawette, which initially was to debut in the November 2021 NHRL event, but had fried the motors and ESCs at safety.

The goal of 1st Law was to be a proving platform for the chassis format and eventually be fitted with a counter-rotating flywheel to cancel out gyroscopic precession in later events. Once fitted with the flywheel, it would once again be scaled up to 250lbs for a later season of BattleBots, however, in the time since 1st Law has become a robot on its own.

Before the 1st Law

Before the 1st Law, there were 4 other robots: 2 unsuccessful 250lbs, 1 failed 3lb, 1 kit bot, 2 working 3lbs, and 1 robot that clearly violates OCSA regulations. The names of these other robots are:

  • 3rd Law (250lb)
    • 2020 Battlebots submission
  • Mike The Bike (250lb)
    • 2021 Battlebots submission (Do not question the name, forget it exists, and do not look up the submission video)
  • 0.3rd Lawette (3lbs)
    • November 2021 NHRL (Failed to complete in time)
  • Drumette (3lb)
    • Standard FingerTech Beater Bar
    • Drumette is the DEIS Robotics Club starter 3lb kit design. Derivates of this kit made my other members of the team include:
  • The Chort (3lb)
  • Indecisive Mess (3lb)
  • Walmart RC Car with DIY Tablesaw


1st Law Iterations

1st Law V0.X

V0.3 of 1st Law using The Chort 's weapon Blade.
Body Material TPU / UHMW
Weapon Modular - Vertical Bar Spinner
Weapon Drive Aerosky 3525 850kv 1:1
Drive 2WD - Rectified Robotics Brushless Planetary
Power Tattu 4S 650 mAh LiPo

1st Law V1.X

V1.0 of 1st Law playing "Kick the Can"
Body Material TPU / UHMW
Weapon Modular - Vertical Bar Spinner
Weapon Drive Aerosky 3525 850kv 2:1
Drive 2WD - Rectified Robotics Brushless Planetary
Power Tattu 4S 650 mAh LiPo

1st Law V2.X

V2.0 of 1st Law the day before NHRL November 2022
Body Material TPU / UHMW / Aluminum
Weapon Modular - Vertical / Horizontal Bar Spinner
Weapon Drive Aerosky 4822 690kv 5:4
Drive 2WD - Rectified Robotics Brushless Planetary
Power Tattu 4S 850 mAh LiPo

1st Law Modules

Vertical Modules

Horizontal Modules

Module Designs Coming Soon!

Control Modules

Module Designs Coming Soon!

Select Fights








Statistics

Info

  • Rank: #129 in 3lb.
  • Last 5 fights: LWWLL
  • Current streak: L2 (0 KOs/KO'd)
  • Longest winning streak: 2 (1 KOs)
  • Longest losing streak: 2 (0 KO'd)
  • Avg fight time (seconds): 138.3

Record

Year Events Fights W L % KOs KO'd
2018-19
2020
2021
2022 2 7 3 4 0.429 2 0
All-Time 2 7 3 4 0.429 2 0


Events

Date Fought as Reached Place Fights W L KOs KO'd
July 16, 2022 1st Law Elimination Round 3 3 1 2 1 0
November 12, 2022 1st Law Elimination 4 4 2 2 1 0


Opponents

Opponent Fights W L KOs KO'd Last Meeting
D2-Stroy! 1 1 0 1 0 November 12, 2022
Nubert 1 1 0 1 0 July 16, 2022
Venti Waspachino 1 1 0 0 0 November 12, 2022
Stoneforge 1 0 1 0 0 November 12, 2022
HiveLighter 1 0 1 0 0 November 12, 2022
DropSaw 1 0 1 0 0 July 16, 2022
Underbit3 1 0 1 0 0 July 16, 2022

Click "Expand" to see this table.


Full Fight History

Date Opponent Round Result By Points Fight Length (s) Video
July 16, 2022 DropSaw Undefeated Round 1 Loss Judges Decision -1.00 180 https://youtu.be/Y7ICJDeDdfY?t=4312
July 16, 2022 MilkTankette Elimination Round 1 Win Forfeit 0.00
July 16, 2022 Nubert Elimination Round 2 Win KO 1.11 56 https://youtu.be/p76hqdy44QU?t=9883
July 16, 2022 Underbit3 Elimination Round 3 Loss Judges Decision -1.00 180 https://youtu.be/p76hqdy44QU?t=18502
November 12, 2022 D2-Stroy! Undefeated 1 Win KO 1.10 12 https://youtu.be/heNXK2dNk18?t=2241
November 12, 2022 Venti Waspachino Undefeated 2 Win Judges Decision 1.11 180 https://youtu.be/heNXK2dNk18?t=5856
November 12, 2022 Stoneforge Undefeated 3 Loss Judges Decision -1.00 180 https://youtu.be/GrwhM8JogeE?t=24527
November 12, 2022 HiveLighter Elimination 4 Loss Judges Decision -1.07 180 https://youtu.be/heNXK2dNk18?t=24266

* Forfeits are not counted in a bot's W-L record.

For more information on how points are calculated for rankings, click here.

Click "Expand" to see this table.

Gallery