Hi, this is a work in progress project of a modular rolling robot platform.

The idea is to provide :

• a standard modular chassis
• a set of "heads" (brackets) for different front sensors
• a few variations of the rear caster
• various wheel designs
• adapter plates for different electronics boards (PICAXE, Arduino, Raspberry Pi..)
• space for batteries under the chassis
• some kind of front gripper or arm
• an hexapod kit

Versions

• Standard size is 75mm wide by 130mm long

• Narrow size is 56mm wide by 130mm long

• v0_0 is a first release without any mounting holes for the electronics

• v0_1 includes holes for Arduino Uno R3, Picaxe 28x2, 28x1 and 08 project boards.

BOM

• a pair of "continuous rotation" mini servos. They can be bought as is or you can make the mod yourself See the attached PDF it contains a step-by-step procedure I've written ages ago
• a standard SG90 micro servo for the head, a pair if you want to use the pan/tilt bracket
• a 1.5 or 2mm pin for the rear caster ( just use a nail snipped to an appropriate length )
• flex material il you want to print the tires, but rubber bands will do
• an other good and extra cheap option for tires is to buy "10 Pcs 60mm x 3.5mm Mechanical Nitrile Rubber O Ring Oil Seal"
• a Sharp GP2Y0A21YK0F IR sensor or an HC-SR04 ultrasonic sensor
• a bunch of M3 screws and nuts, as all the holes have a 3.2mm bore (as on the electronic boards except the 2mm for the Picaxe08)

Stay tuned !

Videos

• V0_1 in an arena with a BoeBot : https://www.youtube.com/watch?v=xHTAqvC1kc8