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Search took 0.04 seconds. search: Posts Made By: Dan Richardson
Forum: General Forum 12-31-2016, 08:17 AM
Replies: 40
Views: 4,425
Posted By Dan Richardson
Robot in 3 Days 2017

Robot in 3 Days is proud to be back for our fifth year and we are again growing our ranks of robot builders. This year we have 11 teams competing against the clock to build a robot in 72 hours....
Forum: General Forum 01-16-2016, 09:16 PM
Replies: 16
Views: 6,585
Posted By Dan Richardson
Re: Robot in 3 Days 2016

I believe they will post their reveal video Sunday.
Forum: General Forum 01-14-2016, 09:36 PM
Replies: 24
Views: 6,775
Posted By Dan Richardson
Re: Ri3D 1.0 Robot Reveal 2016

We saw the clarification this morning.

If I'm interpreting this correctly then our configuration is legal as our arm never extends further than 15" outside the robots frame perimeter. This works...
Forum: General Forum 01-14-2016, 08:42 AM
Replies: 24
Views: 6,775
Posted By Dan Richardson
Re: Ri3D 1.0 Robot Reveal 2016

I think it would require creating a sheet metal bracket that spanned the rear and front gaps to create a flat surface for the bumper to mount. You may also need some standoffs to ensure that the...
Forum: General Forum 01-12-2016, 06:35 PM
Replies: 24
Views: 6,775
Posted By Dan Richardson
Re: Ri3D 1.0 Robot Reveal 2016

Thanks for the kind words!

In regards to the G17 concerns:

The arm being above the 54" threshold was a slight oversight while filming the reveal video. In actuality this arm would be limited in...
Forum: General Forum 01-12-2016, 12:45 PM
Replies: 24
Views: 6,775
Posted By Dan Richardson
Ri3D 1.0 Robot Reveal 2016

Robot in 3 Days Ri3D 1.0 robot reveal video for 2016 FRC Stronghold is now up on our YouTube channel.

https://youtu.be/Kd1FaSNoDiM

We're proud of this year's build as we finished in just over 48...
Forum: General Forum 01-08-2016, 01:35 PM
Replies: 16
Views: 6,585
Posted By Dan Richardson
Robot in 3 Days 2016

Robot in 3 Days is proud to be back and bigger than ever for 2016. This year we will have 8 teams competing against the clock to build a robot in 72 hours.

We are continuing the trend of mixing...
Forum: Technical Discussion 01-16-2015, 12:28 AM
Replies: 13
Views: 3,116
Posted By Dan Richardson
Re: How to make Lead Screws work

We have a calculator on our site to help determine speeds and forces: http://dartactuators.com/calculations-actuators/

You can also download our step files to see some of our design considerations...
Forum: General Forum 01-13-2015, 10:44 PM
Replies: 19
Views: 6,820
Posted By Dan Richardson
Re: [Ri3D] Ri3D 1.0 2015 FRC Robot Reveal

We attached the wheel with a Flex Hub Flange and put a 3/8" shaft collar that we reamed out for 10mm on the other side.

Only 1 side of the wheel was supported.

There are more robust ways to...
Forum: General Forum 01-13-2015, 06:31 PM
Replies: 19
Views: 6,820
Posted By Dan Richardson
Re: [Ri3D] Ri3D 1.0 2015 FRC Robot Reveal

As promised here is a little bit of a deeper dive into our robot and decision making: http://youtu.be/I7jfwprVXMY



We did not CAD the tote claw.

Instead we took an iterative mock-up based...
Forum: General Forum 01-11-2015, 11:43 AM
Replies: 47
Views: 16,095
Posted By Dan Richardson
Re: DART Linear Actuators for the CIM Motor

5/16" - 24 on both ends.

The clevis also has a 5/16" through hole.
Forum: General Forum 01-10-2015, 08:43 AM
Replies: 47
Views: 16,095
Posted By Dan Richardson
Re: DART Linear Actuators for the CIM Motor

Thanks for the concern, it's always good to talk through the questions.

They are legal and you are able to use more than just the CIM motors on them. Mini - CIMs, Versa Planetaries and the AM...
Forum: General Forum 01-10-2015, 08:10 AM
Replies: 19
Views: 6,820
Posted By Dan Richardson
Re: [Ri3D] Ri3D 1.0 2015 FRC Robot Reveal

The 6" Hi-Grip wheels were direct drive off a PG-71 from Andy Mark. The arms were spring loaded in the closed position using recycled trampoline springs. They were actuated open by a 6" DART. We'll...
Forum: General Forum 01-09-2015, 08:11 PM
Replies: 19
Views: 6,820
Posted By Dan Richardson
Re: [Ri3D] Ri3D 1.0 2015 FRC Robot Reveal

As promised here is a playlist of our current videos. We have another more descriptive video being posted tom.

http://www.youtube.com/playlist?list=PLpJRpRT0xvIgZmpWUbpyXSuJn6OujkNQd

Each of the...
Forum: General Forum 01-09-2015, 07:51 PM
Replies: 47
Views: 16,095
Posted By Dan Richardson
Re: DART Linear Actuators for the CIM Motor

Thanks for the interest. We apologize for the delay as we had a slip in deliveries from some of our suppliers. The first shipment of DARTs is at AndyMark now and available for purchase. You can place...
Forum: General Forum 01-07-2015, 10:52 PM
Replies: 19
Views: 6,820
Posted By Dan Richardson
Re: [Ri3D] Ri3D 1.0 2015 FRC Robot Reveal

We'll have another video that explains a bit more on how it works but the simple gist is that the arms are spring loaded and only actuated open. They are free to expand as needed but are constrained...
Forum: General Forum 01-07-2015, 08:34 PM
Replies: 19
Views: 6,820
Posted By Dan Richardson
[Ri3D] Ri3D 1.0 2015 FRC Robot Reveal

Ri3D 1.0 has completed the Robot in 3 Day challenge and we're proud share the completion of our robot "Franken Totes Ma Goats."

View the video here: https://www.youtube.com/watch?v=nRJwIhfKJO0

We...
Forum: General Forum 01-05-2015, 06:34 PM
Replies: 47
Views: 16,095
Posted By Dan Richardson
Re: DART Linear Actuators for the CIM Motor

The pages are up now and being populated with the technical bits. The DARTs should be available late this week/early next week at AM. The quickest way to get updates will be to select "Email Me When...
Forum: General Forum 12-27-2014, 10:25 AM
Replies: 32
Views: 12,466
Posted By Dan Richardson
Robot in 3 Days 2015

Click here to watch our video announcement for Ri3D 2015
(http://youtu.be/SaJVBwTs0kU)

From our blog: Robotin3Days.com (http://www.Robotin3Days.com)



We're looking forward to 2015 and can't wait...
Forum: General Forum 12-23-2014, 12:49 AM
Replies: 47
Views: 16,095
Posted By Dan Richardson
Re: DART Linear Actuators for the CIM Motor

Thanks for the kind words Paul. The lead screw has a .500" O.D. and a .200" Lead. This information hadn't made it's way to the website but we've since added it and a calculator to help you determine...
Forum: General Forum 12-22-2014, 10:03 AM
Replies: 47
Views: 16,095
Posted By Dan Richardson
Re: DART Linear Actuators for the CIM Motor

You are correct, there will be the backlash in the POT gears, pulleys and screw. You also need to take into account the bit rate of the controller as well if being driven by position commands via...
Forum: General Forum 12-22-2014, 09:53 AM
Replies: 47
Views: 16,095
Posted By Dan Richardson
Re: DART Linear Actuators for the CIM Motor

A fully laden 12" Stroke Length, that's including the pot, CIM and limit switches it's 5.8. According to AndyMark the CIM is 2.8lbs so that would put the DART at 3lbs.
Forum: General Forum 12-21-2014, 03:53 PM
Replies: 47
Views: 16,095
Posted By Dan Richardson
Re: DART Linear Actuators for the CIM Motor

We will certainly do our best to meet market demand. AndyMark will have a sizable inventory to start the season and we will have many of the components on hand if demand is higher than...
Forum: General Forum 12-20-2014, 11:11 PM
Replies: 47
Views: 16,095
Posted By Dan Richardson
Re: DART Linear Actuators for the CIM Motor

Generally, we did not see back-drive with the actuators during testing. Technically, because the screw offers greater than 50% efficiency it is not considered self locking and may back-drive...
Forum: Technical Discussion 12-20-2014, 10:41 PM
Replies: 22
Views: 5,514
Posted By Dan Richardson
Re: ThunderHex Bearing Explained

This is a slick new product Paul, I can see where this would save a ton of time manufacturing drive shafts. Looking forward to getting my hands on some to try it out!
Showing results 1 to 25 of 500
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