EDIT: Here is link to our OnShape project.
Hello CD. Welcome to the Grasshopper’s 2019 build thread.
As usual process we started brainstorming robot archetypes after carefully reading the manual. We defined these archetypes roughly by identifying their capabilities in a chart. After downselecting the list looks like this:
We then compiled a weighted decision matrix using a sumproduct operation (that someone from 1114 or 610 (?) suggested in a prior build thread) to rank the archetypes. Unusually, many of the archetypes had roughly the same value for our weighting.
We elected to go with the MVP archetype. Our main objective will be to handle and score game pieces quickly and reliably at all positions, with a secondary objective of completing endgame tasks. For a team of our size we think this is the right scope.
CAD has started for the drive base. We’re looking at up to 10WD with 6in wheels with 6-minicim + ball shifter transmissions. Depending on our HAB climbing approach we might reduce this to 8wd or 6wd. We’re targeting speeds a little slower than what we had last year, 15.5ft/s high and 7ft/s low free speeds compared to 18/8 from last year.
We are prototyping a few different approaches to ground-loading CARGO and HATCHES as well as handling HATCHES. We are looking to iterate our elevator from last year, gear ground collector from 2017, and ball collector from 2012/2014. A real mix-and-match approach of known techniques.
Always happy to hear feedback and answer questions at any point.