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ITGRESA ROBOTICS LIBRARY > GUIDE > COMBAT ROBOTICS SAFETY GUIDE

Guide

Combat Robotics Safety

Build, Event & LiPo Battery Guidelines

Combat robotics is an exhilarating sport that combines engineering ingenuity with high-energy competition. However, with the excitement comes the need for strict safety measures, before and during the event. Lipo battery safety is also paramount. Whether you’re building or battling, understanding and adhering to combat robotics safety guidelines and procedures is crucial to protect yourself, your team, spectators, and others. From the workshop to the arena, safety in combat robotics ensures that the focus remains on design, skill, and strategy, rather than accidents or injuries.

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Soldering setup featuring Hakko soldering station and fume extractor

BE SAFE BUILDING

 

Safety Tips for Building 1lb and 3lb Combat Robots

Building small combat robots, such as 1lb (antweight) and 3lb (beetleweight) bots, is an exciting but challenging process. It’s possible to get hurt. Safety should always be a top priority. Here are some essential safety guidelines to ensure a safe and enjoyable build process:

Personal Protective Equipment (PPE)

  • Eye Protection: Always wear safety glasses or goggles when cutting, soldering, or using tools to protect your eyes from debris and sparks.
  • Gloves: Use gloves when handling sharp components, cutting materials, or working with adhesives to protect your hands from cuts and abrasions.
  • Lung Protection: Use a fume extractor when soldering. Note: Many events, including NHRL, require a fume extractor when soldering.

Tool Safety

  • Soldering: Soldering irons get hot. Always pay attention to where the hot iron is. Use a stand to keep the iron safely in place when not in use. Avoid touching hot metal parts and the iron. Avoid inhaling fumes while soldering.
    Hand Hygiene: Many solders contain lead. After soldering or handling electronics, wash your hands with soap and water before touching your face or eating —especially important for kids in classroom or camp settings.
  • Cutting and Drilling: Secure materials properly before cutting or drilling. Make sure your tools are sharp and of good quality to avoid accidents. Always watch the cutting path and keep fingers away.

Testing and Operation

  • Powering Up: During testing, place your robot on a stand to prevent unexpected movement. Keep hands clear of moving parts, especially the weapon.
  • Remote Activation: Ensure your remote control has a failsafe mechanism to stop the robot if the signal is lost, preventing unintended activation.  Make certain the transmitter is OFF when working on the robot and that you are in control of the proper transmitter.

Work Environment

  • Organized Workspace: Keep your workspace clean and organized to avoid tripping over wires, tools, or materials. An organized space reduces the risk of accidents.
  • Fire Safety: Have a fire extinguisher rated for electrical and battery fires nearby, and know how to use it.

Emergency Preparedness

    • First Aid Kit: Keep a first aid kit accessible in your workspace for quick response to minor injuries.
    • Emergency Plan: Know what to do in case of a fire, battery failure, or injury. Ensure others in your household or workshop are aware of these safety protocols.

Battery Safety

  • Battery Safety:  Lithium polymer batteries pose both risk of fire and toxic gas.  See the battery section for proper lipo safety.
Combat Robot Event - Atlanta Dragoncon
BE SAFE FIGHTING

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Safety Guidelines for Combat Robot Events.

While safety procedures can vary from event to event, there are general standards that are common. Always familiarize yourself with a particular event’s rules. Whether you’re a competitor, organizer, or spectator, following safety procedures is crucial to ensuring a safe and enjoyable experience for everyone involved.

Pre-Event Safety Checks

  • Robot Inspection: Before the event begins, all robots must undergo a safety inspection to ensure they comply with competition rules and safety standards. This includes checking for secure weapon locks, proper failsafe functionality, and no exposed sharp edges.
  • Battery and Electrical Systems: Ensure that all batteries are securely fastened and insulated to prevent short circuits. Check that all wiring is properly dressed and protected from damage during combat.

Pit Area Safety

  • Controlled Environment: The pit area, where teams work on their robots, should be organized and well-lit. Teams should keep their workspaces clean to avoid accidents.
  • Personal Protective Equipment (PPE): All team members should wear PPE as appropriate, including safety glasses and gloves.  Hearing protection may be required in certain situations.
  • No Active Weapons in the Pit: Weapons should remain disabled when robots are in the pit area. Testing of weapons should only occur in test boxes or an arena.
  • Ensure control: Make certain you have the proper transmitter for the bot you are working on.  Labeling is useful.

Arena Safety

  • Arena Walls: The arena should be made with durable, transparent barriers that can withstand impacts and debris from combat. Ensure that all access points are securely closed during matches.
  • Restricted Access: Only authorized personnel, such as referees and technicians, should be allowed near the arena during matches. Spectators should be kept at a safe distance behind barriers.
  • Failsafe Functionality: Before each match, confirm that all robots’ failsafe systems are operational. This is essential to prevent uncontrolled movements or weapon activation if signal loss occurs.

During the Match

  • Referee Control: Referees have the final say in stopping a match if a robot poses a safety hazard, such as losing a weapon or becoming stuck. All teams must immediately comply with referee instructions.
  • Weapon Locks: Locks should only be removed when the bot is safely placed in the arena and the transmitter is OFF.
  • Debris Management: Be aware of flying debris during matches. The arena should be cleared of hazardous materials and debris between rounds to prevent hazards in subsequent matches.

Post-Match Safety

  • Power Down: After a match, ensure that all robots are powered down and weapons are disabled before removing them from the arena.
  • Damage Assessment: Inspect your robot for damage that may pose a safety risk, such as exposed wires, sharp edges, or leaking batteries. Repair any issues before the next match or returning to the pit area.

Spectator Safety

  • Stay Behind Barriers: Spectators should remain behind the designated safety barriers at all times during matches to protect themselves from flying debris.
  • Follow Event Instructions: Adhere to all instructions from event staff regarding safe viewing areas, evacuation procedures, and emergency protocols.

 

BE SAFE CHARGING

 

LiPo Battery Safety for Combat Robotics

Lithium Polymer (LiPo) batteries are the defacto standard for combat robotics. However, they present a risk of fire and toxic gas. Batteries require careful handling and adherence to Lipo battery safety procedures.

 

Choosing the Right LiPo Battery

  • When selecting a LiPo battery for your combat robot, ensure that it meets the voltage and capacity requirements for your bot. Overloading a battery increases the risk of overheating, swelling, fire, and toxic fumes.

Charging Safety

  • Use a Quality Charger: Always use a charger specifically designed for LiPo batteries. These chargers monitor each cell’s voltage and ensure a balanced charge, reducing the risk of overcharging. We like the C6D charger.
  • Charge in a Safe Location: Charge your LiPo batteries in a fire-resistant container, such as a LiPo charging bag or metal box, and never leave them unattended. Always charge in a well-ventilated area away from flammable materials.
  • Monitor Charging: Regularly check the battery’s temperature during charging. If it becomes too hot, disconnect it immediately and let it cool down before investigating further.

Handling and Usage

  • Avoid Physical Damage: Never puncture, crush, cross wires, or otherwise damage a LiPo battery. Physical damage can cause internal short circuits, leading to a thermal runaway:  the battery catches fire or explodes.
  • Secure Placement: Ensure that the battery is securely mounted in your robot to prevent it from being jostled or damaged during combat. Use padding or shock-absorbing materials to protect it from impacts.
  • Watch for Swelling: If your LiPo battery starts to swell or puff up, it’s a sign of internal damage. Stop using it immediately, and dispose of it properly, as continued use could result in a fire.

Storage Safety

  • Store at a Safe Voltage: For good lipo battery safety, always store batteries at a 50% charge (typically around 3.7 to 3.8 volts per cell) to prolong their lifespan and reduce the risk of damage. Avoid storing fully charged or fully depleted batteries for long periods.
  • Temperature Control: Store your batteries in a cool, dry place. Extreme temperatures degrade the battery’s performance and increase the risk of failure.
  • Use a Fireproof Container: When storing multiple LiPo batteries, keep them in a fireproof container or LiPo storage bag to contain any potential fires and prevent damage to their surroundings.

Emergency Procedures:

  • Fire Safety: In the event of a LiPo battery fire, use a Class D fire extinguisher (designed for metal fires) if available. Alternatively, sand can be used to smother the flames. Never use water, as it can cause the fire to spread. Have a sand bucket, tightly enclosed metal container, or fire extinguisher ready in advance.
  • Safe Disposal: If a LiPo battery is damaged, swollen, or no longer holds a charge, it should be disposed of safely. Fully discharge the battery by connecting it to a resistor or other low-power device, and then take it to a battery recycling facility.

Compliance with Competition Rules

  • Follow Rules: Competitions have strict rules regarding lipo battery safety. Ensure that you comply. Failure to comply can lead to disqualification or accidents.
  • Exposed battery: Generally an exposed battery during combat means the match is over.

Toxic Fumes

  • Airflow: Lipo batteries on fire or in thermal runaway generate fumes. These fumes are toxic. Arenas should be ventilated to ensure one air exchange every 60 seconds.
  • External Venting: Arenas should always be vented to the outside.
  • Evacuation plan: Any location where Lipo batteries are present should have an exit plan to the outside and fresh air.

About this Guide

This Guide offers an overview of all safety considerations for combat robots. It is not intended to be an exhaustive reference, but a good combat robotics safety guide and overview.

 

SECTIONS

  • Be Safe building
    • Tips for 1lb and 3lb robots
    • Protective Equipment
    • Tool Safety
    • Testing and Operation
    • Work Environment
    • Emergency Preparedness
    • Battery Safety
  • Be Safe Fighting
    • Pre-event safety checks
    • Pit Area Safety
    • Arena Safety
    • During the Match
    • Post-Match Safety
    • Spectator Safety
  • Be Safe Charging
    • Choosing the right battery
    • Charging Safety
    • Handling and Usage
    • Emergency Procedures
    • Rules Compliance
    • Toxic Fumes
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ITGRESA ROBOTICS LIBRARY > GUIDE > RESOURCES: SAFETY VIDEOS

BASIC SAFETY

FAILSAFES

BUILD A TEST BOX

LIPO FIRES

BUILD AN ARENA

BOT TESTING

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