Show Posts

This section allows you to view all posts made by this member. Note that you can only see posts made in areas you currently have access to.


Messages - zacodonnell

Pages: 1 2 [3] 4 5 ... 36
31
Progress Reports / Re: Team Brain Damage
« on: November 03, 2018, 06:15:39 am »
Here is the build album for Magneato before FI 2018. Not quite as much as a fresh build but still some interesting stuff in there.

https://imgur.com/a/OoX3vXH

-Zac

32
Progress Reports / Re: Mutually Assured Destruction
« on: November 02, 2018, 09:21:43 pm »
I think you might have left your sweatshirt at the pit table. It's dark gray with a white logo on the front. Did you lose one?

I can bring it to Moto if you want
-Zac

33
Progress Reports / Re: Team Brain Damage
« on: November 02, 2018, 09:20:38 pm »
Ok, maybe I have time after all...

Magneato had a pretty mediocre showing record-wise at Franklin, despite getting a few upgrades before the show. I added an outboard support bearing to the weapon shaft to stop the flywheel from skipping off of the baseplate, and replaced the weapon shaft itself that had become pretty bent over the last few years. I also replaced the rear shaft and the baseplate from the giant gash that Pitter Patter put in it at Moto.

The bot still gets stuck upside down way too easily, takes too long to power up between flips, and has issues with gyroscopic precession (see #1). I was more careful with the drive system this time to avoid flipping myself over, but of course it happens in every fight.  I also had some flakiness with the weapon throttle for some reason. I'm starting to think I have a bad connection on the weapon ESC signal wire somewhere. That happens to also be the 5v supply for the rest of the bot, so it is actually a single point of failure for the entire weapon system. I should probably fix that.

I did manage to beat Clomp this year, which is great because they are a team I mentored a little bit and they put me out of the tournament two years back. I needed some payback. Now we're 1-1 so I guess next year will be the rubber match.

I'm uploading some videos now: https://www.youtube.com/watch?v=NlQQrvrc-Hk&list=PLATw5d_vDtZlY1GT1elcCKjEASIgN4B9t&index=1

I think the most fun I had was the Sportsman rumble. Ed, Jim, Kathy, Beth (and the gang) managed to jam time in for it right at the end of the show despite some pretty heavy pressure from the FI folks. It was super fun and chaotic... everything we thought it could be. All I can say is.... TO THE DOOOORR!

-Zac

34
Progress Reports / Re: Team Brain Damage
« on: November 02, 2018, 08:57:56 pm »
I had a great time at Franklin and have been pretty busy since. I expect to have some time next week to catch up here, but until then here's a video of Roger Lord Mortimer vs Heracross. This might have been the sportsman final
https://youtu.be/pVMRiwh3CRY

I have videos of my one win and two losses somewhere here too. It's on the list :)

-Zac

35
Progress Reports / Re: Team Brain Damage
« on: July 25, 2018, 08:24:00 pm »
The build space was great. Lots of space, good lighting, and even a bathroom close by. We were in one of the storefronts. I think somebody said it use to be The Gap.  It was much quieter in there, and separate from the main arena, so you couldn't hear what was going on very well. In some ways that made working much easier, but in other ways it would have been nice to hear the announcements.  Next year I'll be bringing my wireless speaker so we can get a feed from the mic back there.

It was nice to not have to worry about people walking off with your tools, though that has only been a theoretical concern in the past I think - I can't remember anybody actually having problems with it. Hope you had fun at Robogames!

-Zac

36
Progress Reports / Re: Team Brain Damage
« on: July 22, 2018, 08:48:03 pm »
Yeah, it worked ok against dynamo but I broke it against blackout. It probably wonít scale too well in its current form, but it was fun. If I did it again Iíd include an encoder but for the short time I had I was happy enough.  Fun was had by all and Jeremy and the family do a great job. The floor held up great this year. You missed a good time

Zac

37
Progress Reports / Re: Team haciM
« on: July 18, 2018, 11:17:57 pm »
Having spares won't hurt you any at AVC either. Good luck!

-Zac

38
Progress Reports / Re: Team Brain Damage
« on: July 18, 2018, 11:15:32 pm »
Sooo... After toying with a couple of afterthought self righting ideas tonight, I decided to try the battery bump after all. When I went to throw them on the charger.... the cells looked fine.  This time instead of trusting my charger I pulled out my meter and... they still looked fine.  I wiggled the wires around a little bit to make sure I don't have intermittent contact and they still check out.  I then put one of the packs on the charger and watched it closely as it charged. Everything went fine.

So... I think I'm going to chalk that up to me being way too tired from working way too late too many nights in a row.  It might die and bite me in a blaze of glory at Bot Blast but... I hope not.

The good news is that once I charged it up and ran it on 7S, the robot now flips better and IT SELF RIGHTS.  That was the last milestone as far as I'm concerned. I may add a little extra armor on there with the extra weight but I'm going to spend a few hours grinding edges and making spares tomorrow and call it a robot.

See you all Saturday!
-Zac

39
Progress Reports / Re: Revelation Robotics
« on: July 17, 2018, 03:56:58 pm »
Team whyachi is easy, but local shops work too if you call around. I use one in Huntington pa called Reihart machine.

Zac

40
Progress Reports / Re: Team Brain Damage
« on: July 17, 2018, 03:54:56 pm »
Isnít that pretty dangerous?  Youíre risking over charging the other two cells arenít you? How sensitive are they likely to be?

Zac

41
Progress Reports / Re: Nova Robots: common thread
« on: July 16, 2018, 11:26:24 pm »
Is this registered to fight at Bot Blast? What weight class?  That is a biiiig motor.

-Zac

42
Progress Reports / Re: Team Brain Damage
« on: July 16, 2018, 11:22:43 pm »
Bot Blast is coming...

I have been too busy to do much building or build-reporting lately. The work on the bot has pretty much been just this weekend and today. I think I have it working well enough to compete though. Shuttle Launch v2 uses a crank assembly and a very big motor to run the flipper arm. It uses a break-beam sensor and a microcontroller ot help it reset (since it rotates continuously). It doesn't flip quite as hard as threecoil did, but that's mostly because it is designed for a 1200kv motor and 7S, and all I have is an 1800kv motor and 4S. BOTH of my 3S packs have a dead cell after sitting in storage. (It's ~2v when the others are 4.2 and my charger won't deal with it).  My biggest regret is that it doesn't self-right yet, though I think I might be able to get it to with some tweaks. I'll try software first, then hardware. I have ~.9lbs to add so that shouldn't be an issue.  Still lost to clean up and I need to add a top plate, but it's legal at least.

Bulid Report:
https://imgur.com/a/dpctmFI?

Video:
https://youtu.be/IylNuGCx0XI

See you all at Bot Blast!

-Zac


43
Progress Reports / Re: Team Ignition
« on: June 08, 2018, 11:38:49 pm »
I find that every time I make a shell I wish the teeth were longer against the shell than the last time. On the last version of Triggo and Tetanus before that they stuck out 1 inch and were 2.5 inches along the shell. Triggo had serious bracing on the inside of the shell right where the teeth attached, but they still dented in from huge vertical hits. Anything less than 2:1 I think is asking for shell buckling, especially without some more internal bracing.

I look forward to seeing how your design holds up. I like the tilted back shape for the vertical spinners. I tried to do something similar and I think it helped a lot. The best bet against horizontal spinners is making it so the teeth mesh (traveling the same direction as the other bot's weapon). The design you have can only work one direction, so I think that is a big detriment.

-Zac

44
Progress Reports / Re: Team Thrasher / Sunny Robotics
« on: May 05, 2018, 10:33:23 am »
That's a fun video. I haven't seen many "how I did it" walkthroughs like it. Machining the motor pattern into the disk is a great way to get a low-profile high torque transfer connection. I've considered something similar with an outrunner before but the can shape is so seemingly random between them (and even between runs) that I never pursued it. I like the way you built in some potential adjustment for the variation.

-Zac

45
Event Results / Re: Motorama 2018
« on: March 24, 2018, 10:10:35 am »
Reformatted results:
Thanks Joey for entering them and Mike for hosting botrank

Motorama 2018
2018-02-16
0,Denise,Scooter
0,Spark Plug,Scoop
0,Paw Print,Demise
0,Nibbles,Millstone
0,Gimli,Skeeter From Hell
0,Deathbell,Denise
0,Spark Plug,Crabby
0,Paw Print,Nibbles
0,Gimli,Bugfish
0,Demise,Millstone
0,Scooter,Nibbles
0,Bugfish,Scoop
0,Demise,Denise
0,Crabby,Skeeter From Hell
0,Spark Plug,Deathbell
0,Gimli,Paw Print
0,Scooter,Bugfish
0,Crabby,Demise
0,Spark Plug,Gimli
0,Scooter,Deathbell
0,Crabby,Paw Print
0,Scooter,Crabby
0,Scooter,Gimli
0,Scooter,Spark Plug
0,Spark Plug,Scooter
1,The Highlander,Bread
1,Cornerstone,Toxic Envy
1,Vile Ant,Taco Annihilator
1,Robot,Verbal Irony
1,Commander Doom 2,The Patriot
1,Low Blow,Andreas Speed Wedge 1
1,Foiled!,Slim Pickens
1,The Highlander,Hit or Miss
1,Ratfish,Bird Law Intern
1,FireArrow,Odium
1,Cornerstone,Rising Phoenix
1,Hercules,Swamp Woman 2
1,All Defense,Dumpling
1,Physique Black,Angry Accountant
1,Vile Ant,Here

Pages: 1 2 [3] 4 5 ... 36