Wednesday, February 1, 2023

Day 26: Practice Robot Progress

Our practice robot is coming together quickly. We had cut and powder coated all the rails. We are powder coating practice parts for two reasons, one we started competing with our practice robot more at off-seasons so it’s nice for it to look good, and it lets us choose the best coated parts for our competition robot. 

Our competition robot should be assembled pretty quickly behind this one, we already have all the rails cut and powder coated and the swerve modules assembled. 

Progress will begin on getting the Four Bar components mounted on to practice robot, and then we will need to manufacture our V1 competition intake and launcher.

Launcher Progress

Changed all intake/launcher motors to Falcons, still running open loop and manual aiming. 

More test videos where it misses are in the gallery

Monday, January 30, 2023

Day 23-24: Launcher go brr

 * *Exceptions apply, see terms of service for details


We did more testing on our launcher by replacing the launcher motor with a 12:18 gearbox with a Falcon 500. We also switched the 2” silicone rollers for 3” compliant wheels. Here are 2 videos about how that went:

Practice bot swerve

We have been refurbishing out 2022 Comp bot swerve modules for our practice bot this year. It’s a really slow process and takes around 3 hours per module. 2 are done, and the rest will be done through the week. This is what our drivetrain for the practice bot looks like right now.

Saturday, January 28, 2023

Day 20-22: Intake and Practice bot


We experimented more with the intake these past two days. We have added a second roller to the bottom to better guide both the cone and cube into the correct position for transporting across the field. This lets us pull the nose cone up more and stops the cone from diving down and being held in an incorrect position for scoring. Other experiments can be seen in the photo gallery including a hard wooden floor that helped guide the nose but reduced the floor cone intake abilities.

Practice Bot

Practice and Competition bot; drive and elevator MAXtube rails were powder coated. We started assembling the practice bot elevator.

Wednesday, January 25, 2023

Day 19: Elevator Rails and intake testing

Intake Testing

We had some of our best intake tests today. One of the key points in an interactive design cycle is when you begin to understand what can be removed not just what can be added to allow the system to keep working but to make it simpler and more robust. 

Yesterday Alpha’s intake had 3” compliant wheels on the top roller and launcher. Today we swapped those for 2” polycarb and silicone rubber (these are the hood rollers from our 2022 practice robot).

This test setup worked very well and allows us to build the intake lighter, simpler, and make it less expensive. This is just today’s version of the intake, we expect it will change many times over the season and probably before next week but it’s at a good progress point.

The current intake can

  • Intake cubes from the floor in the full down position.

  • Intake tipped-over cones from the floor when the nose is slightly pointed at the intake and the flange is inside the width of the intake. We estimate we have around 150 degrees of intake range on the cone. With training, we believe this should be good enough for our pilot to use this as an efficient loading option from the loading zone.

  • Intake standing cones if the intake/four bar are set to the correct height. The current intake is pretty height sensitive to standing cones. We need to be within in about a ¾” height window for it to intake well. This should be good enough for us to intake cones from the Human player shelf.

Things to experiment with

  • Intake from the single substation?

  • Improve storage geometry to make sure the cone tip always goes in the intake so we aren’t holding cones tilted up.

  • Ensure our grip on the cones is firm enough so we never drop a game piece.

  • Improve scoring geometry on high and mid posts.

Intake Standing and Tipped Over Cone

Intake Cube

1/25/2023 Intake Specs

  • Lower roller is just 1/2" hex with silicone tube floated on top.

  • Top roller is a 2" polycarb with silicone tube floated on it around it (actually, it's just our practice bot hood roller from last season).

  • Gap between the roller surfaces is around 4.75" in these tests and roller C-C is at a 73° angle from the floor.

Elevator Progress

We cut all of our elevator rails for the practice robot and competition robot. We also began laser cutting some of the additional parts.

WCP Inline Clamping bearing blocks are being powder coated, as are The Thrify Bot Elevator Gussets we will be using on the elevators.

Monday, January 23, 2023

Day 15 & 16

 Cone Intake Testing

  • We are pretty happy with the test version of the cone intake. It’s able to pick up tipped-over cones that have their tip ahead of the flange and the flange within the width of the intake.

  • When at the right height it can pick up standing-up cones as well.

  • There are more failed attempts on in our photo gallery.

Cube Intake Testing

Basic Charge Station Test

  • We are still building part of the station but got enough built to see if Alpha could drive up

  • This is using unmodified SDS MK4i modules in the standard low 2x1 mounting configuration.