Spooky: 150g Combat Robot, Horizontal Spinner

thingiverse

This is a combat robot engineered to compete in the 150 gram weight class with minimal BOM expense to make it accessible to new builders. This design remains a work in progress as it hasn't yet been built. The bot was designed for the Endbots Design Contest! http://forum.endbots.com/thread/41/endbots-design-contest-october-2018 We're going to be building the bot in the coming months, so if you are interested in using this design, you may want to wait until after we've worked out the bugs! This robot is also a scaled-down version of our 3lb combat robot Phantom II, seen here: https://www.youtube.com/watch?v=XUurk-RRiKA This bot is designed to be printed out of Markforged Onyx filament, which is a nylon-based filament containing chopped carbon fiber. Using more rigid filaments may require some adjustments to tolerances for press-fits and holes in the design. BOM: 1x 180mah 2s Batteries ($20 pack of 5): https://hobbyking.com/en_us/turnigy-nano-tech-180mah-2s-25-40c-lipo-pack-5pcs.html 1x Endbots Budget DESC ($20): https://www.endbots.com/collections/products/products/endbots-budget-desc?variant=12506201555018 2x N20 Gearmotor ($7 each): https://www.endbots.com/collections/products/products/n20-gearmotor Any 12-20A Brushless ESC (I'm using these, but cheaper ones are available) ($2-12): https://hobbyking.com/en_us/spider-pro-20a-opto-2-4s.html Emax MT1806 Brushless Motor ($14): https://www.emaxmodel.com/emax-multicopter-motor-mt1806.html This bot was designed around the receiver from a cheap hobbyking radio ($27): https://hobbyking.com/en_us/hobby-king-2-4ghz-4ch-tx-rx-v2-mode-2.html M3 and M2 flat-head screws and M3 nuts from McMaster-Carr or alternate source. 1/16" O-ring belts, 5" Outer Circumference to run between the wheels ($4): https://www.mcmaster.com/8060k1 3mm ID 8mm OD bearings from Amazon ($8): https://www.amazon.com/gp/product/B00ZHSR80U/ref=oh_aui_detailpage_o07_s00?ie=UTF8&psc=1 6" x .75" x .125" 7075 Aluminum bar from Onlinemetals for the blade ($1.53 for these dimensions entered under "custom size"): https://www.onlinemetals.com/merchant.cfm?pid=12663&step=4&showunits=inches&id=916&top_cat=60 Not counting 3D-printed part cost, a beginning robot builder who has no radio equipment or batteries on hand could build this bot for roughly $120 in parts!