mjscore

mjscore is a scoring system for Mech Warfare (http://mech-warfare.com) style competitions between scale size legged robots.

• GitHub https://github.com/mjbots/mjscore
• Free hardware and software: Apache 2.0 License

Overview

The scoring system consists of piezo panels which are affixed around the robot, and a transponder which powers the panels and relays scoring information to a central station.

Panels

Each panel consists of:

• A laser cut front and back plate made of 1/16" Delrin.
• A piezo sensor affixed to the back side of the front plate with contact cement.
• A conditioning board, consisting of an ATTiny85 which samples the piezo, and emits scoring hits and debugging information.

There is a full sized (3.5"x3.5") configuration, and a half sized configuration. For the half-sized configuration, each portion has a separate conditioning board, which should be daisy chained together to drive a transponder.

Transponder

The mjscore panels are designed to inter-operate with any revision of the official Mech Warfare transponders, or for instance, the RTEAM version at: https://github.com/bloftin/rbots/

Base Station

For the RTEAM and official Mech Warfare transponders, the base station can consist of an XBee explorer, such as this pair from SparkFun:

• https://www.sparkfun.com/products/11812
• https://www.sparkfun.com/products/8710