Team Ucalegon's ants

All things antweight

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tomchaps
Posts: 46
Joined: Thu Jul 28, 2016 4:51 pm

Re: Team Ucalegon's ants

Post by tomchaps »

A few videos from a recent competition. There weren't many 150g robots, but I did end up with 1st and 2nd. My vertical spinner has never worked well, but it did great here, for some reason.

Swarf v Underscore. "Great fight"--Ray Billings of Tombstone fame actually commented this on Reddit! https://www.youtube.com/watch?v=Pqnk5FP8Ldg

Swarf v Scoop, a neat lifter that can also clamp. https://youtu.be/aFYmrafdwYg

Jellytussle versus Scoop: https://youtu.be/iGfoSc1VC0w

Jellytussle in an unjudged grudge match versus a nasty drum spinner. Not sure who would have won. https://youtu.be/WdxHQbIPnkI

Jellytussle getting revenge for Swarf. https://youtu.be/40YOghNWd1o
tomchaps
Posts: 46
Joined: Thu Jul 28, 2016 4:51 pm

Re: Team Ucalegon's ants

Post by tomchaps »

One further question. I have some small, high-powered servos that look like they're close to the "pink" that I use in Swarf, but they're only rated to 6.0V or 7.0V.

Is there a converter people typically use to lower voltage from 2S batteries to servos? Preferably one that isn't too big for a 150g robot? Those I've found have been way too unweildy...
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Kyro
Posts: 412
Joined: Fri Jan 18, 2019 12:36 am

Re: Team Ucalegon's ants

Post by Kyro »

i generally use the bec from my esc's to power lower powered servo's... both types of esc i use have a 6v bec which is usually the power standard servo's require...

you could use a seperate bec if your esc's dont have one built in... sadly, i cannot provide links to any decent bec's as i have never needed a seperate one...

if all else fails, i have a friend that uses seperate bec's in her bots... i could ask her for the ones she uses and post back here if you needed me to
Team Rocket
Trappist 1(4wd grab 'n' lift)
Ton 618 (4wd expanding bot)
Io(4wd flipper)
tomchaps
Posts: 46
Joined: Thu Jul 28, 2016 4:51 pm

Re: Team Ucalegon's ants

Post by tomchaps »

Huh, I thought you needed to run servos directly off of the batteries, or the receiver would brown out. (See a page or two up on this thread, in fact). Does the ESC's BEC help in that case? My TinyESCs have them, but I'm not sure what the wiring would look like...

Thanks.
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Kyro
Posts: 412
Joined: Fri Jan 18, 2019 12:36 am

Re: Team Ucalegon's ants

Post by Kyro »

usually you get brown outs due to the servo drawing more than the bec inside your esc can put out... usually brownouts occur when a high power servo has to move something heavy... regular servo's (6v max) should be fine running straight from the bec inside your esc... 6v bec beats 5v bec...

i think the tiny esc has 5v bec but dont hold me to it...

really, the best way to test would be to hook up your servo normally and test it under load to see if power craps out on you... if so then your esc's bec probably isn't up to much more than powering your rx... either that or your servo draws a lot of power... in either case, an seperate bec or a lower power drawing servo would be the answer... unless you wanted to risk overvolting your servo (hook red wire from servo to red from battery)

i have done this with some mg90 servo's, none went pop, a couple worked fine and a couple were a bit jittery (returned to normal after returning wire where it should be) used the good ones for maybe an hour or 2 max before swapping them out for better servo's...

so it would be whether you wanted to risk your servo if you took this route
Team Rocket
Trappist 1(4wd grab 'n' lift)
Ton 618 (4wd expanding bot)
Io(4wd flipper)
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