Since BBB Brawl, a lot of work has gone into this robot. This includes the purchase of an 8mm thick bar of mild steel, which was cut, by hand, into a spare weapon for testing and as a backup. The offcuts from this piece were cut and drilled into two sets of long, 8mm thick forks. The 3D printing was successfully done in high-infill green TPU, giving us the fork mounts, four wedgelets to counter drums, and the sharp edge protection for the Hardox weapons and forks, which have not yet arrived. It is unlikely that the Hardox will arrive before we leave for RoboDojo tomorrow, meaning we will have to use the mild steel weapon at the event. The preexisting HDPE wedgelets have been given an angle to save some weight and will remain as the anti-horizontal setup.
Following the wheels taking damage at Bristol, one of them has been replaced as it was slipping quite a lot and all have been given a few coats of rubber cement to improve traction. They have also been covered by wheel guards, of which we made six as they are likely to be damaged during fights. A sticker with the name of this robot, Exposure, has been made with the design of the Hardox disk on it and put on the back to easily identify it.
Testing
This test video was taken before the forks were mounted onto the robot, and the weapon was running on about 30-40% throttle for safety. This footage was taken through the polycarbonate lid of a test box, and we were standing back when the robot was moving. We also tested against the prototype chassis that we made, and it shattered one of the weapon mounts and hit it into the ceiling multiple times! It is clearly capable of giving out some big hits!
This means that we have a fully functioning robot to compete with at RoboDojo, even if we don't have the Hardox parts. The weight with all four mild steel forks is 1.474kg, 26g below the weight limit! My only goals for the event are: to win one fight, and to give something a really good hit, either launching it or causing a lot of damage.
All metal has arrived and parts printed, and we just about got in weight (more on that later)! The first important parts to do were: printing the chassis, weapon uprights and front armour. Then, after quite a steep learning curve, we assembled our 1806 conversion drive without much difficulty. We had our first go at casting polyurethane wheels, and they came out really well and feel really grippy. We then had to wait a little for our new metal parts to arrive, and I decided to re-print the wedge with more walls. However, we finally ran out of green TPU! This meant we had to use the black TPU that we had difficulty printing, but after a few setting changes it went perfectly. Once the metal had arrived, it was time for a test weigh in. This unfortunately weighed in as 1.595kg with the heaviest setup (4 forks). Even with just two forks, it was around 55g overweight. This led to us completely redoing the wiring, trying to cut out as much unnecessary wire as possible. I reprinted the w...
Here is the full event video, I will write the timestamps for each fight. BBB x LHG Summer Showdown 2024- All Fights - Bristol Bot Builders Beetleweight Combat Robots The venue for this event was lovely, however the constant rain was a bit annoying, especially when it dripped off the marquees down the back of my neck! We arrived at the venue and went into the tech check with the heaviest setup we could run, and passed safety with no issues. Fight 1: (06:46) My first fight was against Om Nom and Carbon Copy. I was happy with this match up as I would be the only spinner against a grabber (?) and a cluster bot. The fight began and I quickly engaged with one of the halves of Carbon Copy, using my full weight to push it into the wall and slice some material off the front wedge. I then reversed to give myself a bit of a run up and hit the cluster again, this time ripping the wedge off and slamming it into the ceiling. Whilst this was happening, Om Nom had somehow gotten stuck with...
We competed at Battle in the Burgh on Sunday! Here's how it went... My first fight with Exposure was against Wee Twosers, a two-part cluster armed with vertical spinners. This fight was fairly simple, I picked a target and hit it, then they both ended up upside down. However, both outer forks were damaged, so they were not used for the rest of the event. Fight 2 was against Ultros. The first hit exposed Ultros' internals, so I backed off until I got the confirmation that we could carry on. The second hit left Ultros stranded over by the pit, where it was counted out. Exposure's final fight night fight was against Speeny. From the start I managed to smother Speeny, and give it lots of good hits before it stopped moving. This is one of the best, most consistent flurry of hits I've given out so I was very happy! On to the round of 16, I would be facing Limiting Factor. The left side drive was binding a bit, so when I got the first hit I was unable to capitalise and got st...
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