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Technical

Technical docs

Heavy Wheel or Light Wheel?

Usually if you don't have specific option, you should use lighter wheel. Because lighter wheels have lower rotational inertia which means they less exhaust the motor's usable energy. Also with lighter wheels robot will accelerate and decelerate fa...

Why all minisumo & sumo robots are painted mainly black?

Nearly all robots uses beam sensors like infrared or visible light reflective sensors. And with black body color all beam reflective type sensor's distances decrease too much. So builders generally paint their robot to black to decrease opponent r...

For sumo robots rubber wheel or silicone wheel?

It depends. For different types of robots we have two different model wheels. At this article I will handle differences  of rubber and silicone wheel models. first of all silicone has better traction than rubber and nearly for all types of robots ...

Which Line Sensor Should I Use - QTR-1A, ML1 or QTR-1RC?

ML1 and QTR1A are same sensors with different PCB design and giving analog output depending on colour. QTR1RC is digital sensor that can work with measuring RC time contast depending on surface colour. We strongly suggest to use ML1 or QTR1A senso...

How to clean wheels?

We suggest alcohol based cleaners and soft cloth. That will make silicone wheels very soft and sticky.

XMotion Fast Start

Apply voltage to board. We uploaded Test code inside. Dipswitch 1 opens motors, back & forward. Dipswitch 2 opens User Led Toggle and Dipswtich 3 and button changes which led blinking.  Download the Xmotion library from  jsumo.com/xmotion #include...

How to attach wheel to motor?

For our all silicone wheel models and rubber models we are using setscrew connection method. All wheels have holes at wheel surfaces (rubber) or at rim surfaces (silicone) you need to put motor's haft to center and after that with setscrew you nee...

What is best motor for mini sumo robots?

We developed core series for mini sumo robots specially.  We recommend for all robot makers for their good price and high power output. What is more that you can overvoltage motors up to 18.5 Volts (5 cell Lipo). It's bigger motor diameter gives e...

What is the difference between magnetic & non-magnetic sumo robots?

Difference is BIG! Non-magnetic sumo robots are uses lower powered dc motors and their acceleration can be very noticeable. Where as magnetic, japan style sumo robots uses very high power dc motors and their acceleration is nearly instantaneous. A...

For sumo, mini sumo robot Which sensor? Infrared or ultrasonics?

Unfortunately we regret to see some projects uses ultrasonics for this type robots. You should never use ultrasonics for mini sumo or sumo robot for these reasons: Slow response up to 70 mS! High affection by vibration (if robot moves fast datas b...