After a month-long hiatus after the crash, I redesigned the tricopter chassis. The aluminum arms are now foldable, and the motors are closer to the center of the chassis (I have yet to trim the arms to a shorter length). There is room for the new and bigger ESCs underneath the other electronics.
Two years ago, I designed my own motor driver breakout board using two L298N motor driver ICs and had them manufactured through BatchPCB. Here it is, finally finished. The KiCAD files are on my github repo here.
Minibot proof of concept out of old Lego parts. The purple arms push against the pole, which angles the wheels into the pole to create a horizontal vector just strong enough to keep the bot on the pole. Took about two hours to make. The bot is climbing up a 40 inch metal pole that […]
Meeting time: 15:00 to 21:00 We are two days behind schedule. I started a WOT (Weighted Objectives Table) discussion of the various lift concepts at 3:30. We started with seven concepts: Single-jointed arm Multi-jointed arm Telescope (elevator) Four-bar linkage Eight-bar linkage Scissor 60/40 scissor We narrowed it down to the four-bar linkage and the elevator […]
Meeting time: 15:00 to 19:00. We will have budget discussions every Tuesday after meeting. FIRST Choice parts ordered, including the FTC Mini Kit for the minibot. Talked more about end effectors, spent 30 minutes prototyping. Kushal and Damian made a pretty sweet prototype of a four-bar linkage arm. I messed up here again and completely […]
Meeting time: 15:00 to 19:00. Continued talk about end effector design. We built prototypes and tested them in the shop, but just as Will was showing the old triangular scissor lift and I was wondering why there were suddenly so few people, my sister ran in and told me Mr. C (my youth symphony director) […]
Meeting time: 15:00 to 21:00. Printed 73-page game manual. Everyone should read the rules! Reconsidered different drive designs (swerve, mecanum, simple, treads, omni, casters) and decided to go with swerve over mecanum in a 10-7 vote. Note the total number of votes. We have 46 people on our roster. Granted, the five PR people and […]
Meeting time: 9:00 to 14:00. Read the rules. We hosted a team from Canby, OR per their request for a place to brainstorm after the Kickoff. Our classroom was packed. Will wanted to set up a mock field using tape and play the game using human robots, but as LogoMotion is a very three-dimensional game, […]