Lithuanianbots mini sumo board | Vexor

The LithuanianBots Mini Sumo Control Board (VEXOR) is a compact, competition-ready control solution engineered specifically for Mini Sumo robots. It integrates high-power motor control, advanced sensor interfaces, power management, and seamless programming support into a single, robust PCB designed for real competition environments.

Developed based on hands-on Mini Sumo experience, VEXOR minimizes wiring, reduces setup time, and maximizes reliability—allowing teams to focus on strategy, tuning, and performance rather than hardware complexity.

At the heart of the board is the ATmega328P microcontroller, providing stable performance, low latency, and full compatibility with the Arduino ecosystem.

Motor control is handled by two DRV8874PWPR motor drivers, delivering aggressive pushing power required for competitive Mini Sumo robots. Each driver supports high peak currents up to 6.5 A (device-limited), enabling fast acceleration and strong traction under load.

The board also features integrated current sensing for each motor, allowing advanced diagnostics, load monitoring, and smarter control strategies.

For line detection, the board integrates an LM324N analog signal conditioning stage, optimized for two line sensors, ensuring stable and noise-resistant readings in high-interference competition environments.

Line sensor sensitivity can be adjusted instantly using the onboard potentiometer, eliminating the need for software recalibration during setup.

For opponent detection and advanced strategies, the board supports:

• Up to 5 distance sensors
• High-speed sensor reading suitable for real-time decision making

The board is fully compatible with the LithuanianBots Line Sensor Breakout Board, which can be soldered directly onto the PCB for a clean, wire-free installation:

👉 https://lithuanianbots.com/shop/tproduct/542052985802-lithuanianbots-line-sensor-breakout-boar

Visual Feedback & Debugging

VEXOR includes an integrated RGB LED, designed for:

• Robot state indication
• Strategy visualization
• Debugging during testing and competitions

This allows quick status checks without connecting a computer or additional hardware.

Power & Protection

• Designed for 2S Li-Po battery input (7.4 V nominal)
• Fully operational with 3S Li-Po batteries (tested in real conditions)
• More than 3S is not recommended
• Onboard voltage regulation for logic and sensors
• Battery reverse-polarity protection, protecting the board from accidental +/– connection

The PCB layout is optimized for high current paths, ensuring reliable operation under heavy load.

Programming & Expansion

• USB-C connector for fast, reliable programming and debugging
• Dedicated connector for start module integration (IR or mechanical)
• Servo output support, ideal for flag deployment mechanisms
• Dedicated high-speed N20 / N10 motor output, designed specifically for fast flag or blade deployment mechanisms

Software Support

The board is officially supported by the VEXOR Arduino library, developed specifically for Mini Sumo robots:

👉 https://github.com/LithuanianBotsShop/Vexor

The library provides:

• Ready-to-use examples
• Optimized motor control routines
• Fast sensor reading (bitmask-based where applicable)
• Competition-oriented software architecture

This makes VEXOR suitable for both beginners and advanced competitors.

Key Features

• Designed for Mini Sumo robots
• Ready for use Arduino library designed by professionals
• ATmega328P microcontroller
• 2× DRV8874PWPR motor drivers
• High-power motor control
• Up to 6.5 A peak current per driver
• LM324N analog front-end for line sensors
• Supports:
• 5 distance sensors
• 2 line sensors
• 2S Li-Po battery input (7.4 V)
• USB programming interface
• Servo output support
• Compact PCB with mounting holes
• Clearly labeled connectors for fast setup

Ideal For

• Mini Sumo competitions
• Advanced robotics projects
• Educational and research robots
• Compact high-power mobile robots

Why Buy from Us?

We are based in Europe, meaning you get: ✔ Fast & reliable shipping – no long waits for international orders. ✔ No import taxes or hidden fees – avoid extra customs charges. ✔ Trusted European supplier – quality and support from a local robotics specialist.

Choose LithuanianBots VEXOR — a control board built for real Mini Sumo competition, where performance, reliability, and smart design matter.

Useful Links:

Vexor board Github

Lithuanian Bots parts 3d models