The first tests of the LoCoRo documentation is underway. It’s also time to look at the potential kitting of the LoCoRo which means a critical eye at all of the parts from the view of mass production – even if it’s at a small scale to start.

The result is the new universal chassis and universal electronics places.

CAD parts for production LoCoRo
CAD parts for production LoCoRo

The chassis (in blue) is now the same regardless if it is built as a tricycle, tank drive, or with mecanum wheels.

The electronics board supports both plug-n-play with a USB battery or a pair of 3.7V rechargeables.

The electronics board can now grow with the user. It starts from the entry level LoCoRo with a Raspberry Pi 3 and PWM servo controller. It has a reserved space for a power breadboard at the back. From there the user can add a four channel DAC, a 3-axis accelerometer + 3-axis gyroscope, a scanning ultrasonic or time-to-flight sensor, an 128×64 OLED display, bumper switches, LEDs, and who knows what else.

Just as important as the universal assembly plates is the standardizing of hardware. The new assemblies use just one screw size for all hardware assembly and electronics mounting.

By early April, all three models of the LoCoRo will be assembled with updated documentation. Manufacturing costs will be computed and then it will be decided if/when the LoCoRo project can graduate from 100% DIY to an educational kit.