Forum: General Forum
11-12-2016, 16:25
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Replies: 30
Views: 2,171
Re: Building a second robot - electronics?
It's awesome to have two completely identical FRC legal robots and control systems.
One alternative is to use a lower cost micro controller to get a low cost practice robot up and running for driver...
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Forum: Technical Discussion
11-12-2016, 11:57
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Replies: 12
Views: 1,280
Re: Jigging Tubing Before Weld
I would say that 254 uses gussets extensively...they typically rivet their tube together with plate and then weld them in place.
See attachments. We regularly do the same thing.
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Forum: Extra Discussion
18-10-2016, 09:44
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Replies: 38
Views: 6,703
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Forum: Extra Discussion
17-10-2016, 20:29
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Replies: 38
Views: 6,703
Re: pic: CGX-108 front
The only reason this wouldn't back drive would be inefficiency. Cycloidal drives DO backdrive. :)
Single stage cycloid backdriving!...
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Forum: Off-Season Events
14-08-2016, 20:56
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Replies: 45
Views: 9,058
Re: China Robotics Challenge 2016
Not sure.
I did see an image of the "hand." The component that cradles the boulder. They milled one from aluminum. We 3D printed ours.
Don't know if it made it on the bot.
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Forum: Off-Season Events
14-08-2016, 20:30
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Replies: 45
Views: 9,058
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Forum: Off-Season Events
13-08-2016, 22:19
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Replies: 45
Views: 9,058
Re: China Robotics Challenge 2016
I heard of and then saw proof of a more or less complete 118 knock-off at the tournament!
The pictures I saw of it were incredible. The amount of time they must have poured into replicating each...
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Forum: Programming
07-06-2016, 10:41
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Replies: 61
Views: 4,915
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Forum: Programming
06-06-2016, 11:20
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Replies: 61
Views: 4,915
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Forum: Programming
06-06-2016, 10:40
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Replies: 61
Views: 4,915
Re: swerve drive with arduino mega 2560
Before this project gets all the way off the rails let's just keep making some forward progress.
The very next step you need to accomplish is to get the speed controller spinning the motor using...
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Forum: Electrical
04-06-2016, 18:12
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Replies: 11
Views: 1,320
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Forum: Electrical
03-06-2016, 09:06
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Replies: 11
Views: 1,320
Re: PD Board and Talon/Victor Alternatives
For power I think these are the right choice...
http://www.amazon.com/ATO-ATC-FUSE-BLOCK-GANG/dp/B000N9PJ7W/ref=sr_1_sc_1?ie=UTF8&qid=1464959441&sr=8-1-spell&keywords=Buss+fuse+pane
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Forum: Programming
02-06-2016, 20:31
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Replies: 61
Views: 4,915
Re: swerve drive with arduino mega 2560
I've been slowly walking her towards these next steps.
Our free RobotOpen library and driver station will make tele-operation via wifi dead simple once she gets there. RC is an option too, but why...
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Forum: Programming
02-06-2016, 12:19
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Replies: 61
Views: 4,915
Re: swerve drive with arduino mega 2560
Perfect.
Now you can investigate the "Servo" example. It shows you how to send commands to a hobby servo...this is similar to sending commands to speed controller.
I don't recall off the top of my...
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Forum: Programming
02-06-2016, 12:09
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Replies: 61
Views: 4,915
Re: swerve drive with arduino mega 2560
http://lmgtfy.com/?q=how+to+load+code+onto+my+arduino
Check out the first link. :)
Arduino is supposed to be easy....so follow their simple guide and get some example code loaded. Then we can...
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Forum: Programming
02-06-2016, 11:49
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Replies: 61
Views: 4,915
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Forum: Programming
02-06-2016, 11:43
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Replies: 61
Views: 4,915
Re: swerve drive with arduino mega 2560
Also, I can't see from the image if you have a steering sensor installed?
I presume you have it located on top of the steering module...but I can't tell.
Is this true? What sensor is it?
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Forum: Programming
02-06-2016, 11:38
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Replies: 61
Views: 4,915
Re: swerve drive with arduino mega 2560
This is an exceptional challenge...
We can help, but we can't do everything.
Have you done the following:?
1. Loaded an example program onto the arduino, i.e. blink
2. Verified that the example...
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Forum: Programming
31-05-2016, 11:42
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Replies: 61
Views: 4,915
Re: swerve drive with arduino mega 2560
Agreed.
The whole point of an Arduino is to be "foolproof." Start with using their supplied tool and examples to make sure everything is working as expected...then try your custom config.
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Forum: Programming
31-05-2016, 11:11
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Replies: 61
Views: 4,915
Re: swerve drive with arduino mega 2560
I'm not sure why you would have to do "burn bootloader." Arduino boards come hot out of the gate ready to go.
Under "tools->board" make sure you have the correct Arduino hardware selected. Then...
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Forum: Programming
27-05-2016, 13:50
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Replies: 61
Views: 4,915
Re: swerve drive with arduino mega 2560
This robot is running full 4 wheel swerve on an Arduino...
https://youtu.be/hdAmpk0PQ3I
The controls code is based on the Ether paper. Ether also helped write some integer based routines to...
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Forum: Technical Discussion
12-05-2016, 11:03
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Replies: 178
Views: 18,608
Re: What COTS parts would you like to see?
For those interested, this chain tool is still available in the wild.
http://www.davesmotors.com/DarkSoul-25-Chain-Breaker-Tool-3466.html
We used to sell it...it's a long story as to why we do not...
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Forum: Electrical
14-04-2016, 21:25
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Replies: 9
Views: 1,471
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Forum: General Forum
29-03-2016, 13:51
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Replies: 90
Views: 13,274
Re: Scaling Club
It is a steel compression spring. The trigger is a pneumatic cylinder operating a simple over-center lever.
The dart itself has some bearings that ride the surface of the trigger cam to get a...
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Forum: General Forum
29-03-2016, 10:37
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Replies: 90
Views: 13,274
Re: Scaling Club
This match (https://youtu.be/rA_biYE0tMU) has a great close view of the grappler as we hang!
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This place is much brighter than most institutions I have seen. It also seems to be lacking straight jackets which I think is a mistake for many of us. - Andrew Schreiber [more] 
