Scottie Builds ants sometimes

[Scottie]

Last weekend I went to the university of bristol beees robots wars and entered these 3 bots. From left to right, Pingu, Brutal Barbera and Sawboss mkvi.

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Pingu is a flipper and its specs are:

weight: 138g
body: 3d printed pla with 2mm abs sheet and 0.75mm ploycarb on the base of the flipper wedge
drive: 4 wheel drive with 2 wheels connected with oring pulleys
motors: 600rpm metal gear motors
flipper servo: Turnigy TGY-306g-hv
electronics: 2s6a dasmikro with random dsm2 receiver
battery: 7.4V 180mah lipo

I had some problems with this robot. Basically any receiver I connected to it would break. I used 4 or 5 receivers on this bot. Sometimes they would break immediately some after about a few minutes. Powered receivers with both 5V and the raw battery voltage (upto 8.2V i think?) I also used a lemon RX and that broke too... I'm pretty unsure why this is happening. I'm speculating that it could be something to do with the motors, possibly somthing to do with EMI. I am not using spark capacitors that are supplied by the dasmikro. They are also alot slower than the typical 600rpm motors, so i dont know what they are. Weirdly the gearboxes are identical to the normal 600rpm types.

Brutal barbera is described in the first form post in this thread.

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Sawboss is a walker with a rotating blade and its specs are:

weight: 178g
body: 3d printed pla with 2mm abs sheet
blade: 3mm thick titanium at 18g
drive: 6 legged walker
motors: 600rpm metal gear motors
weapon motor: V-spec 2205 2350
weapon motor ESC: afro 20A
electronics: 2s6a dasmikro with random dsm2 receiver. drive motors are powered via dc-dc stepdown converter
battery: 11.1V 180mah lipo

Sawboss is the 6th iteration of this robot. The previous iterations will enjoy a post of their own. Ill try and find some footage of it walking. The weapon motor is powered by 11.1V probably a bit to overpowered for antweight, it will drain my battery after 2 fights. But when it can get a hit it can release alot of force. During one of the last brawls at beees it managed to get entangled on one of their arena hazards.. and another robot. This put the motor into stall condition and it got rather hot, melting its body. Funnily it could still drive after being attached to a big lump of metal and a 150g bot.