We had a trip out to Ferry Fair recently. It was great seeing all of the display robots and having a chance to fight with my dad's antweight! Here is some footage taken at the event.
Our trip to Robodojo earlier this month highlighted a few issues that needed to be resolved. Most of these problems were to do with the weapon assembly, which had way too much flex and caused us to lose the weapon in our first fight. Also, the 3D printed parts were PLA at the event (uh oh) so they needed to be re-printed in TPU with a slight redesign for some parts. The fork mounts needed a way to stop the forks rotating under the robot like they did in York, and the weapon spacing needed to be increased. After looking at different companies that could print what we needed, we decided that it would be easier (and probably more cost efficient) if we bought our own 3D printer and TPU filament. This also opens up a lot of opportunities for printed antweight and beetleweight chassises. The first step for improving the weapon was to move the weapon bulkheads outwards and extend them backwards to the piece that separates the drive motors from the rest of the robot. We changed the ...
Because the Robodojo events have an antweight competition along with the beetleweights, we decided to make a couple of ants to take to the next event. These follow the same theme and colours as Exposure, but are a little less competitive and more of a chance to try new things and make robots that are fun to fight. However, I still wanted to make a spinner. So I thought for a long time about how I could make a spinner that would be entertaining, but not too serious, and I eventually settled on a 4WD large undercutter design. The plan was to make the chassis as small as possible but make the weapon as LARGE as possible. The actual chassis footprint is only about 80 x 65mm! This was printed in PLA+ with 2 walls and 30% infill, which feels nice and strong. It also runs on 3S LiPo because why not, and uses a 2700KV 1806 motor to power the weapon. This gives a theoretical tip speed of 319mph, or 34,000 rpm with the largest weapon. Also, due to the battery voltage, we couldn't use the ty...
We went to Battle in the Burgh 5 recently. This is the last event for the current version of Exposure, and was also the first event for the brand new version of Photon. Exposure Exposure's first fight was against new robot Shark Bait. I was deliberately holding back a bit at the start, but then I got a good engagement into Shark Bait's PETG (I think) chassis which shattered, giving me a nice first win of the event. My second fight was against another newcomer, Sunstroke, a dual horizontal spinner. I started the fight with a box rush, hitting Sunstroke and unplugging its battery with the force of the hit. The whole fight last just under 3 seconds, with no damage at all to Exposure. My final Fight Night fight was against a spinnerless Sweet Tooth. Unfortunately, I think the force of the hit in the last fight slightly misaligned some things in the weapon motor assembly, so when I somehow ended up inverted, the weapon died which caused my first loss of the day. Onto the Round of 16...
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