Robot to Lead Labor Day Mackinac Bridge Walk

[Craig Roys]

Join the Fighting Pi in becoming the FIRST to bridge The Bridge!

FRC Team 1718 - The Fighting Pi welcomes all teams in the FIRST community to participate in this year’s Labor Day Bridge Walk across the Mighty Mackinac Bridge on September 1, 2014

We’ll be accompanying Michigan Governor Rick Snyder in leading the way, along with our specially designed Bridge Walk Robot. Come on out, walk the bridge, and help us promote FIRST in northern Michigan. Due to security reasons, only members of Team 1718 will be allowed to join the Governor’s group, but all walkers can discuss FIRST and robotics during the five-mile journey.

Date: September 1, 2014

Time: 7:00 a.m.

Location: St. Ignace – Mackinaw City, Michigan

For information on transportation and parking, see the following link - http://www.mackinacbridge.org/annual-bridge-walk-7/

[Craig Roys]

I wanted to update with a picture of the robot we built which will be leading the way for the walk across the Mackinac Bridge on Labor Day.

[Procolsaurus]

This is really cool and so is that robot with your mascot!

But I have to ask, Does that robot come with a blade attachment?

[DanielPlotas]

Originally Posted by Procolsaurus

But I have to ask, Does that robot come with a blade attachment?

with eyes?

[Tom Line]

Soooo tempting.... must make dozer bot....

Watching them put this together was pretty awesome. We've never made anything like it before that is on/offroad capable. It's pretty happy climbing curbs, and they did a lot of testing (and jogging) to make sure that it could travel the right distance at the right speed.

It even has cruise control - with a deadman switch for safety.

They're using an on-board laptop and a wireless x-box controller to control it during the walk. The bonus is that if it goes out of range or the controller is disconnected, the driverstation automatically disables. Safety FIRST.

I know we've had 8 batteries on it (it's designed to actually have more, I believe), and it's perfectly happy driving with someone on top of it because the drive hardware is steel and well supported.

Bonus points if you can spot the error on the robot in the picture.....

Fun fact: According to the design and build teams the the solar panel can supply something like 60% of the power required to drive on level ground on a very sunny day.

[safiq10]

I'm going to have to guess that front left frame covering is bent out?

[EricH]

Originally Posted by Tom Line

Bonus points if you can spot the error on the robot in the picture.....

Last I checked, 1718 was not the Fighting Tau. Admittedly something may have changed since... Or someone took a little liberty with how they fit the logo onto the robot. (And this time, I don't think programming can be blamed...it's obviously a marketing problem!)


Either that, or Dozer doesn't have a cantilevered main drive shaft.

[MrBasse]

Originally Posted by Tom Line

Soooo tempting.... must make dozer bot....
....I know we've had 8 batteries on it (it's designed to actually have more, I believe), and it's perfectly happy driving with someone on top of it because the drive hardware is steel and well supported...

I know it sounds crazy to think 8 batteries might not be enough, but I would recommend walking five miles with it to check and make sure it will make the trip. We had our Dozer bot out for a two mile parade and it only made it 1.5 miles! We ran an Optima yellow top deep cycle battery and didn't do much for turning or crazy driving. We were down to 9 volts and were dropping communication left and right. Luckily we had a pickup truck to do the heavy lifting. Solar panels would have been a welcome addition for us. Our next update is to drop the C-rio and go to a 8 channel RC control system.

Oh! And a tire pump is a wonderful thing to bring too, a slow leak can really slow you down!

Best of luck to you guys and have fun on the bridge! That is such a cool experience for students and I highly recommend anyone who hasn't walked the bridge to give it a try.

[BBray_T1296]

How much do those solar panels actually contribute to the electrical supply to the robot during the walk?

It seems hard to imagine that you would get a whole lot of power from them given the relatively small quantity, and the demands of our FRC robots.

Of course, even a minor increase in range is beneficial.

[dodar]

You built your Centaur backwards.

[Tom Line]

2 Batteries took this robot 4.5 miles (before we stopped). We've actually been running it on the jogging trail (with hills) at our local Metropark to verify it has enough distance - 8 batteries took it much, much further.

FRC bots generally take very little power if you're driving in a straight line with no secondary mechanisms running. We've checked amperage and found that one side of the drivetrain pulls 4-5 amps running on flat ground.

The solar panel can actually supply a decent chuck of power while the bot is running. We haven't tested the panel output, but I expect the panel to give 50-75 watts (it's rated to 250 at max sun conditions). That's around 50% of what the bot takes to run on flat ground.

[Tom Line]

Originally Posted by EricH

Last I checked, 1718 was not the Fighting Tau. Admittedly something may have changed since... Or someone took a little liberty with how they fit the logo onto the robot. (And this time, I don't think programming can be blamed...it's obviously a marketing problem!)


Either that, or Dozer doesn't have a cantilevered main drive shaft.

*snicker*. Yeah - fighting Tau.

Check out the 'right' hand of the Pi Guy. The thumb shouldn't really be there...

[Craig Roys]

Originally Posted by EricH

Last I checked, 1718 was not the Fighting Tau. Admittedly something may have changed since... Or someone took a little liberty with how they fit the logo onto the robot. (And this time, I don't think programming can be blamed...it's obviously a marketing problem!)


Either that, or Dozer doesn't have a cantilevered main drive shaft.

Hmmm...I never even noticed that that wasn't actually a Pi symbol. However, the bottom half of the Pi Guy (Tau Guy...that just doesn't sound right) will be covered with a bridge walk t-shirt.

[tr6scott]

FRC team 3436, the fighting tau!
And Pi is still wrong... http://youtu.be/jG7vhMMXagQ

[GaryVoshol]

I didn't hear it, but my wife said the governor mentioned the robot while being interviewed on WJR (Detroit radio station) before the walk started.