SumoBoy is a professional fight robot, made in accordance to international Mini Sumo robot competition rules and ready for real tournaments. It can be customized and programmed for changing tactics in arena. The Robot has an Arduino microcontroller as its brain, so it can be used for educational purposes in order to learn the basics of C and C++ languages. We are offering the Sumo Kit with an actual robot and set of electronic parts for education purposes. You can take the Arduino microcontroller from the robot, put it on prototyping board and start to program it, playing with LEDs, DC motors, and sensors.

About us

SumoBoy was created by a team of robotics enthusiasts who are building robots and engaging in tournaments for more than 10 years. Our team has won all the major competitions all over the world (Europe, USA, Japan, etc.) and SumoBoy serves as a next big step in our dedication to make robot sumo competitions more popular and the robots – more available and affordable. We all are educated and qualified engineers, with many years of experience in electronics and robot technology.

Sumoboy has been made for:


  • Complies with the international SUMO robot competition rules and regulations
  • Made from high-quality parts
  • Fast and tough
  • Customizable hardware and software
  • Safe LiFePO4 battery


  • Perfect for learning basics of C and C++ programming languages
  • Based on widely popular Arduino microcontroller
  • Comes with prototyping board set and electronic parts for training
  • No soldering needed
  • Best choice for electronics enthusiasts

And it acts like a real sumo

The sumo robot battle takes place in a circular arena. Robots are operating autonomously. The objective of the robot is to push its opponent out of the ring.

By using sensors the robot seeks the opponent while avoiding the white line surrounding the arena.

SumoBoy uses one of the previously programmed battle strategies.

SumoBoy locates its opponent. It turns its ''blade'' against the opponent. The processor ''makes'' a decision.

High quality silicone wheels guarantee a perfect grip with the surface while low center of gravity keeps the robot on the ground.

Robot that has managed to push its opponent entirely out of the ring wins the match!

Sumoboy training set

SumoBoy can be used also for educational purposes. We have made a special set, which helps to learn the basics of C and C++ languages of electronics and programming. It consists of the robot, mounting plates, engines, sensors, light diodes and other electronic parts that are necessary for the learning process. Therefore this set can be as well used in schools and electronics clubs.

Technical data

  • Dimensions 98x98x42 mm (3.85x3.85x1.65 inches)
  • Weight - 359.8gr (0.77 pounds)
  • Anodized aluminium shield
  • Tempered spring-steel blade
  • Stainless steel base
  • Silicone wheels
  • Aluminum wheel hubs
  • Power - 6V - 12V
  • Metal gear motors 2x6V, 1.2A, gear ratio: 50:1
  • Battery 700mAh 6.6v LiFePo4 2S1P
  • 5xIR range sensors
  • 3xIR line sensors
  • Arduino micro-controller

Made in European Union

Most of the robot parts are made by RobotNest team. Rest of them are being designed and outsourced strictly by our specifications.

Wheels, silicon tyres, armor plates, frontal blade, base plate and wheel discs are all made by our own hands

Full SumoBoy set

All in one box.
Everything you need for learning, programming, experimenting and ultimately taking part in the robot tournaments.

Champions. The team behind SumoBoy

The team behind Sumoboy

We have been building robots and coding for almost 10 years. During the last 5 years we have been working on the sumo robot technology. Together we spend loads of time trying to find and figure out ways to make our devices do new and exciting things.

We are peers, colleagues and friends. Together we spend loads of time trying to find and figure out ways how to make our devices do new and exciting things.

Robot tournaments

Being true friends, peers, and colleagues has allowed us to us to win all the biggest sumo robot tournaments all over the world, and ultimately create the SumoBoy!

List of robot competitions where we have participated

  • 2015 Robot Challange – Vienna, Austria
    1st and 3rd place – Mega Sumo discipline
    Mini Sumo death-match win
  • Robotex 2015 - Estonia 1st and 2nd place Mega sumo discipline
  • 2014 International Robot Sumo Tournament - Tokyo, Japan
    1st place - Mega Sumo discipline
  • Robotex 2014
    1st, 2nd and 3rd places - Mega Sumo discipline
    2nd place in Mini Sumo discipline
  • 2014 Robot Challange – Vienna, Austria
    1st, 2nd and 3rd places - Mega Sumo discipline
    Mini Sumo death-match win
    1st place - Line Follower
  • 25th All JapanRobot-Sumo tournament 2013 - Tokyo, Japan
    3rd place - Mega Sumo
  • Robotex 2013
    1st and 2nd places - Mega Sumo and Line Follower
  • 2013 Robot Challange – Vienna, Austria (400 robots from around 30 countries)
    1st, 2nd and 3rd places - Mega Sumo discipline
    Mini Sumo death-match win
    2nd place - Line Follower
  • RoboGames 2013 USA
    1st and 2nd places - Mega Sumo
    1st place - Mini Sumo
    1st place – Line Follower
  • 2012 All JapanRobot-Sumo tournament 24th - Tokyo, Japan
    A tie between 13th and14th places
    (more than 1000 participants in the games)
  • Robotex 2012
    1st, 2nd and 3rd places - Line Follower
    1st, 2nd and 3rd places - Mini Sumo
  • 2012 Baltic Robot Sumo – Riga, Latvia
    1st and 2nd places - Mega Sumo „Gauja” and „Firebolt”
    2nd and 3rd places - „Fast&Furious” and „Spartan”
    2nd place – Line Follower „Silent”
  • 2012 Robot Challange – Vienna, Austria
    1st place - Mini Sumo „Fast&Furious”
    1st and 2nd places - Mega Sumo „Flash”
  • 2011 All Japan Robot-Sumo tournament 23rd - Tokyo, Japan
    3kg (lb,pounds) sumo “Flash” – lost in round 1 of playoffs
  • Robotex 2011 – Estonia
    1st and 3rd places – Line Follower
    Robots - „Silent” and „Knight Rider”
  • 2010 All Japan Robot-Sumo tournament 22nd - Tokyo, Japan
    3 kg sumo “Tachka V3” 52nd-48th places, total of 1300 robots
  • RoboGames 2010 USA
    Mini sumo “Shpaktele”.
    3 kg sumo “Tachka” - 2nd place
  • RobotChallenge 2010 – Vienna, Austria
    Mini sumo “Shpaktele” - 30th-40th places of 120 robots
    Sumo 3 kg - 8th-16th places from 80 robots
  • Robotika 2010:
    Mini sumo - 1st place, total of 11 robots
  • Baltic Robot Sumo 2009 LT
    Mini sumo “Shpaktele” - 9th-11th places, total of 26 robots
    3kg sumo “Tachka” - 4th-6th places, total of 13 robots
  • Baltic Robot Sumo 2009 Tallin, Estonia
    Mini sumo “Shpaktele” - 7th-14th places, total of 22 robots
  • Robotika 2009
    Mini sumo “Shpaktele” - 3rd place from 20 robots
  • Baltic Robot Sumo 2008
    3 kg sumo “Tachka” - 3rd place
  • Robotika 2008
    Line Follower “Rat” - 3rd place
  • Robotika 2007
    Line Follower “LineJet” - 2nd place from 26 robots
  • 2007 “Inovācijas arēna”
    Line Follower “LineJet” - 2nd place
    Line Follower “Amphibia V2” - DNF
  • Robotika 2006 Line Follower “Linijdiebis”

Our team

Dr. Agris Nikitenko

Chairman of the Board

One of the leading robotics specialists in Latvia, active researcher and lecturer, focus on research about autonomic systems and the AI(artificial intelligence). Among the organizers of the first robotics event in Latvia.

Einars Deksnis

Chief Engineer

Team and a factual leader of the Latvian robotics team. Has represented Latvia many times in competitions in Europe, USA and Japan, and with his team-mates have secured wide recognition of Latvia in the world.

Gundars Miezitis


Teacher and researcher, manager of several robotics clubs. Has won awards at the international robot competitions.

Guntis Kulikovskis

Engineer - consultant

Made his first competition robot in year 2007. Designed mechanics of the winning robots at European, Japanese and American competitions. Together with his team-mates has made robots for scientific, educational and entertainment purposes.

Karlis Berkolds

Engineer - consultant

Teacher, actively teaches students and other enthusiasts in robot construction. Organizes electronics and robotics clubs in schools, as well as work-shops and seminars about the construction of robots.