Triangular Danger Sticker (qty 10)

Original price was: $12.00.Current price is: $10.00.

Combat Robotics- Triangular Danger Sticker.

High Quality laminated stickers with universal “danger to hands” symbol. Orange and black. 2″ x 1.75″

Sold in packs of 10.

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Original price was: $12.00.Current price is: $10.00.

2 in stock

SKU: triangular-danger-sticker Categories: , ,


Be responsible! Help Combat Robotics build a safer, more secure future. Clearly mark hazards using our combat robotics triangular danger sticker. Show the world you care, and be safe.

Combat robots, even small ones, can deliver huge amounts of kinetic energy to anything that they touch. See the Wired Magazine article on the physics of combat robots here. This amount of energy and injure, even maim.

A surprising amount of energy, you say? What is surprising? Consider this. In Robert Cowan’s article on combat robotics, he says that a little one-pound antweight can deliver 150 joules of energy. In Cowan’s article, he says, “…a little one-pound (Antweight) combat robot could have a spinning mass that stores 150 Joules worth of energy, which is… roughly the same as a bowling ball falling from… [10 feet], which could easily break some bones and cause serious damage to a person.”

Imagine a bowling ball dropped from ten feet, landing on your foot. Ouch!  A pretty quick trip to the Emergency Room!

Make sure you and your team are always conscious of the safety risks with these bright stickers.

Robot danger label- combat robots are inherently dangerous
We are beginning to include this safety pamphlet in every kit and weapon assembly we ship:  

Important Notes About Combat Robot Safety:

Given the violent nature of robot fighting, safety is always the most important issue at robot events. Robot fights take place in a sturdy arena, usually constructed of steel, wood, and bulletproof clear Lexan plastic. The smaller, lighter classes compete in smaller arenas than the heavyweights.” - Wikipedia

Like many other sports that involve physical contact, Combat Robots are inherently dangerous. Precautions must always be taken when assembling, troubleshooting, testing, and fighting your robot.

Events are run with strict rules to keep competitors and spectators safe, but it is your responsibility to keep your work area safe.

These robots should not be assembled or used by children without adult supervision.

  • The robot’s weapon is designed to generate high amounts of kinetic energy to cause damage. This can also damage the human body, creating cuts, broken bones, and other very serious injuries. Take every precaution when building your robot, and always assume that it can hurt you.
  • Safety glasses are required at all times when working on combat robotics. Wear hearing protection as required when testing and operating the robot.
  • Always apply the weapon guard when not fighting the bot. “C-Clamps” or vice grips are not an effective weapon guard. Make sure the blade is completely immobilized by placing something, such as a screwdriver or allen wrench, that completely stops the blade from turning.
  • Always use the power interlock to ensure the bot cannot be powered up unless fighting or testing the bot.
  • Use a safety platform such as a roll of tape to keep the bot off the ground when testing the bot. The goal is to keep the wheels from touching the ground. If the wheels can touch the ground, the bot could drive at you with weapon spinning.
  • Only test the bot inside of a testing arena designed specifically for combat bots. You can find a simple setup plan here: Any testing setup should use at least ¼” lexan (note: NOT plexiglass)
  • Always turn your transmitter on before powering up the robot, and power it down after turning off the bot. This will prevent momentary signals from accidentally activating the bot.
  • Set your transmitter down when moving the bot into the arena, in a place where no one can accidentally touch the controls.
  • We recommend having a fire extinguisher in proximity to the bot.

lipo battery danger sticker


Lithium batteries are a great innovation for many things. However, as you may have seen in the news, LiPo batteries can release their stored energy suddenly, causing fires.

  • Store the batteries between matches in a LiPo storage bag. Many are available from Amazon.
  • If your LiPo charge falls below 3.3v per cell, it will not be safe to recharge. So, for a 2S battery, the minimal voltage is above 6.6v. A 3S battery must be kept above 9.9v. If your robot begins to slow down, recharge the bot.
  • You can also purchase a Low Voltage Alarm that plugs into the white balance plug of the battery. It displays the pack voltage and will sound an audible alert when it is time to recharge.
  • If a pack is ever damaged or seems puffed up, don't try to charge it. Replace the pack and recycle the old one. Charging damaged or puffy batteries can cause a fire.

Thanks for helping to keep our sport safe!