University of Maryland Extension




2/10 REC Manual V1.1 + REC Build Guide
2/25 REC manual has been updated with rule clarifications and the addition of the scoring sheet.

Maryland State 4-H Robotics Challenge

The Maryland State 4-H Robotics Challenge provides the opportunity for members to participate in an organized statewide robotics activity. Members in each county will form teams that will build robots to perform specific tasks. The county teams will then have the opportunity to compete at the Maryland State Fair. The Challenge will be divided into two divisions: the LEGO Challenge and the Robotics Engineering Challenge. Each of the divisions will be broken down into age divisions.  Both divisions will have a Jr. Division (8-11), Intermediate Division (11-13) and a Senior Division (14-18). Mixed age teams will be allowed and will participate in the age division of the oldest member on the team. Teams in the LEGO division will have from 3-8 members and teams in the Robotic Engineering teams will have 2-4 member. The Robotics Challenges will be released each year on February1st.

Please click on this link to access the FAQ's List

The Maryland 4-H Robotics Forum is live! Click to join the conversation at:  

Have questions? Looking for help troubleshooting problems with building your robots or the field components? The 4-H Robotics Team is here to help. Sign up for a free account and ask away. 4-H members and leaders will be able to have full conversations, share information and ideas with each other, and have greater collaboration on how to best tackle this year's 4-H Robotics challenges. Take a look!

Maryland State 4-H Lego Challenge

The playlist for the 4-H Lego Challenge Build Guide is here:

Maryland 4-H LEGO Robotics Challenge will have members build robots using the LEGO Mindstorms NXT and LEGO parts. The challenge will be run on a 4’ X 4’ table. The robots will be required to start in a home base area and then travel autonomously through out the board completing predetermined tasks. The NXT robots will be preprogrammed utilizing icon based programming software. The robots will score points as they compete task with in a 2 minute 30 second time frame. Teams will complete three rounds with their best score counting toward their final score.

Maryland 4-H LEGO Robotics Challenge will also require the team to present a technical presentation to a panel of judges. The teams will explain how their robot and attachment work and how they worked together to complete the challenge.

A third component of the Maryland 4-H LEGO Robotics Challenge is the community service project. Each season the 4-H LEGO Robotics Challenge will have a theme. The team will be asked to develop a service project that supports the theme. The team will do a visual presentation for a panel of judges explaining their service project.

The final score for each team will be based on combination of the best robot round, technical presentation and service project.

4-H Robotics Engineering Challenge

The Maryland 4-H Robotics Engineering Challenge will have members building larger robots up to 18”X18”X18” which will compete on a 12’ X 12’ playing field. The robot can be constructed from a variety of robotic platforms including but not limited to VEX, Tetrix, or LEGOs. The challenge will change every year. The first 30 seconds of the challenge will be performed by the robots autonomously.  The final 2 minutes will be driver controlled through wireless controls.

Teams will also interview by a panel of judges answering questions about their robot construction, team work and community activities. 

2020 Maryland 4-H Lego Robotics Challenge Documents: 

      • Aquaculture - Stock the Pond
      • Automation - Feed the Cows
      • Automation - Milk the Cows
      • Urban Farming - Build a Rooftop Garden
      • Automation - Water Valve
      • Automation - Robotic Weeding
      • Precision Agriculture - Remote Sensing
      • Automation - Egg Collection
      • Urban Farming - High Tunnel 

2020 Maryland 4-H Robotics Engineering Challenge Documents: 

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