Hackbot Micro Pi Noon Bot

thingiverse

Here are the parts required to print the Micro Pi Noon Bot, chassis. The post at the rear is designed to hold a metal coat hanger formed to hold a balloon at the rear and a pin at the front of the bot. These are then used with the Wiimote to joust, first person to pop the other's balloon wins, usually a two-person competition. These were all printed on a Makerbot 2X. You will also need the following parts to complete the Pi Noon Bot: Pi Zero (various suppliers) Bluetooth dongle (Robot Shop or similar) 4 x 50:1 metal gear motor/gearbox (Pimoroni) 4 x wheels (Pimoroni) 1 Astro Designs Pi-Z Moto motor control board 1 toggle switch (RS 317-645 or similar, hole size is 6mm) Turnigy 1800mAh 2S 12C Lipo Battery Pack (HobbyKing) Lipo battery checker (to see remaining charge on the battery and check battery balance) 1 Wiimote (eBay or Amazon) !!!! NOT THE WIIMOTE PLUS !!! 1 right-angle micro USB to USB A, to plug the Bluetooth dongle into the Pi (right angle fits better) 4 x 15 mm M3 PCB stand-offs one end threaded stud and other end threaded hole 4 x 10 mm M3 PCB stand-offs same as above 4 x 5 mm M3 PCB stand-offs same as above 7 x M3 x 5mm pan head screws to fix chassis top to stand-offs between main body and top, and to fix motor control board in place 1 x M3 x 10mm pan head screw to fix body down while holding battery clip in place 8 x M1.6 x 3mm screws to hold motors in place in chassis If you wish, you can power this bot from 4 AA batteries, cheaper but less powerful. Instructions for initial Bluetooth install here..... http://www.brianhensley.net/2012/08/wii-controller-raspberry-pi-python.html How I Designed This Inspiration This was inspired by Micro Pi Noon bots used in Cotswold Pi Jam, usually cobbled together from Meccano, Lego or plain gumption and sticky tape. I decided to make a more resilient version with the 3D printed chassis. While doing so, I tried integrating a Lipo battery for a bit more power. The AA batteries originally used provide 6V, and the motor control board can handle up to about 9V, so the 7.4-volt 2-cell pack seemed a good solution. Finding PCB stand-offs the right length to hold the pack snug between the top and bottom of the chassis made it a perfect solution. The design was used to promote the use of Pi Zero with the "Astro Designs Pi-Z Moto" motor control board, which also has pins available to make this a line follower. And have LEDs or range test functions added, latest instructions for this board can be found at the following location: www.astro-designs.com/downloads/piz-moto/instructions/PiZ-Moto_Instructions.pdf This location also includes links to the code required on the Pi to make the bot function. The 3D printed parts for the bot were all designed using OpenScad. This was also created to promote Cheltenham Hackspace. More information on our group can be found at www.cheltenhamhackspace.org.