Thursday, July 16, 2020

Spectrum Robot Design Review Videos

While we moved our meeting to virtual sessions, we have been doing design reviews or design overviews of all of our past robots. Today we finished the series by doing a design review of our 2020 robot. Below we will link to the full youtube playlist and to each of the videos for our 2012-2020 robot. (While 3847 existed in 2011 we weren't Spectrum until 2012 and we don't have any CAD for the 2011 season).

Playlist - https://www.youtube.com/playlist?list=PLTocT0DivsNnpLQTUjilKfViGwg69PSW3

Ultraviolet 2012


Gamma Ray 2013


Infrared 2014


X-Ray 2015


Ultraviolet 2016


Gamma Ray 2017



Infrared 2018


X-Ray 2019


Ultraviolet 2020


We have also added a few other videos to our youtube channel and will continue to do so while meeting virtually. If you want to be notified of new content to subscribe to our youtube channel or follow us on Twitter.

- Spectrum

Thursday, April 30, 2020

Chairman's Award - Houston 2020

We were honored to receive the Chairman's Award for the suspended Houston 2020 District Event.

Here is our 2020 Chairman's Video.


Congratulations to the other FIRST in Texas District Chairman's Award Winners!

- Spectrum

Thursday, March 12, 2020

Spectrum 2020 Design Slides

Throughout the season we kept a design slide deck that allowed us to keep notes and document our designs and ideas. We are releasing this to the public so people can see how some of our ideas developed. We did go back through this document to add a few slides that were based on notes in other places and it was updated throughout the season so some of the kickoff area slides aren't really from kickoff.

Link: https://docs.google.com/presentation/d/13yS35uDdEM2lEDKCAESrFgklObFr6WldLW2VufSugBQ/edit#slide=id.g8165cb3ccd_2_5

Friday, March 6, 2020

Everybot Progress Photos + Gluing Balls


Everybot

Our Everybot project should be driving next week. We made a few changes from the original design already but overall, it's mostly stock. The two biggest changes are it has a NEO for a climber motor and only has one set of gear on the arm.

IMG_20200306_001447.jpg
IMG_20200306_001453.jpg
IMG_20200306_001537.jpg
IMG_20200306_001459.jpg
IMG_20200306_001507.jpg

Ball Glue

Team update 16 has a link to a ball repair guide for events. We wanted to test the glue that is specified and see how repaired balls felt. We bought the glue and repaired a ball and left it overnight. It seems to seal up the cuts pretty well but with our first test ball, it didn't cause the cuts to become airtight again so the ball was still easy to compress, similar to before we glued the cuts. The places that are glued do feel a bit harder, then normal places on the ball. We glued the rest of our cut-up balls today and we should be able to test shooting them next week. (we are taking the weekend off, everyone needs a break)

IMG_20200305_143855.jpg
IMG_20200305_143905.jpg

Spectrum

Wednesday, March 4, 2020

VP Ratchet Climber Lock

Many teams have asked us about our climber break from last season. We mentioned possibly using it this season and showed a small CAD image.

We want to give a full story into the development of this break.

Last season we planned to use the VP ratchet in a normal way and have a cylinder pull a string to disengage the pawl.  When we did that we either could disengage the pawl or couldn't engage it properly. We also heard of people breaking the pawls.

While at champs we were looking for a way to brake our climber that didn't use the pawl. SOTAbots (FRC#25570 were in our division and they had a great climber break that they showed us. Here is a picture we took.



We worked in our pit to make a version of this but we couldn't custom make the parts they did. So we removed the out shell of the ratchet and just used the spacers. We also tried to use a normal bolt but we broke it, so instead, we just use the pneumatic rod end directly into the ratchet. We found that it didn't damage the rod end at all when doing this.

For IRI our setup looked like this.
IRI ratchet setup 2019.PNG
The VP dual input doesn't have the rear bolts so we need to clamp on the cylinder.

We have heard from several teams that have used this setup with great success. We aren't using it this year. For Dripping Springs we were able to just use our NEO climb motors in brake mode, with about a 30:1 reduction on our elevator and our robot would stay in the air for more than enough time to keep the climb.

We do have a latch mounted on our robot.
Climber Latch 2020.PNG
This latch uses a laser-cut Delrin ratchet that is pressed on to the pinion of one of our NEOs. We haven't tested this setup yet as we haven't needed it. We do plan to get it working so if we climb late enough to not be at the top of our climb we will stay off the ground.

Spectrum