Mix and Match - 1x parts for the win holiday contest

In the early years of VIQ there were some pretty amazing robots that were heavy on struts. They were light, very airy and pretty interesting.

Across the last few years, 2x and big plates have become more popular. For the last three years and this year, it’s been chunky robots. The are all shorter to keep the height down but they are still pretty chunky.

I think the 1x parts have a place. If you connect them at 90 degrees along the length they are as strong if not stronger than a 2x beam. With the wide variety of corner connectors and the new beam parts, there isn’t a limit on what you can build.

We are also coming up the Christmas Holidays. (Yea, I normally this before Thanksgiving but time sometimes isn’t my friend. ) So there are slightly more than 30 days.

Contest: Best Mix and Match robot that is 80% 1x parts. I’m hoping for robots that can stack but also do something with the beam.

Criteria: 80% or more of the frame building components are 1x parts. So motors, gears and wheels don’t count. I want to see the 1x parts highlighted. Corner connectors, pins, shafts, etc. are allowed. Use of standoffs and any the 5 different standoff ends, will get you a bonus. (I was trying to go for an all standoff challenge, but it turns out things like the 90 degree and truss ends are hard to find)

You can submit CAD solutions. While I love “As built”, I’ll take submissions from roboteers showing off CAD skills.

Looking for the most complete competitor, so functions matter.

Submissions: by 11:59 PM on January 4, 2026. (That is the Sunday of the long Holiday weekend). I want 6 pictures: bottom, top, all 4 sides. I’d like to see them posted to this thread. But I understand that you may have found out that 1x parts are cool and are actually building your competition robot this way. In that case, email me at Foster dot Schucker at STEMRobotics dot org.

Prizes: First $100 in VEX parts before shipping, Second $75 before shipping and third $50 before shipping. In the event of a lack of entries, prizes will be rolled up. So if you are the only entry, it’s a $225 prize. Only first and second will split the $50 third place money. (I want to give a shout out to the VEXRobotics Australian Team, they figured out how I could order parts in Australia while living in Delaware to fulfill the 2024-25 a contest winner prize).

There have been an epic number of parts in the last few field elements that are 1x. Kits are littered with 1x parts. Here is a chance to really show off your design and engineering skills, prove to us you are better than “Moar Plastic”

Feel free to ask questions.

As always, judges decisions are final even if they are petty, vindictive, capricious and arbitrary. Bribes are not condoned, but I am up for listening to your “offer”. This contest may be illegal in your town, state or providence, it’s up to you to figure this out. Contestants must be under 18 at the time of submission. If you are older, email your submission, I may or may not have additional prize money.

To be transparent, I’ve been very impressed with what people have been building in the last 5 years. I can’t speak for the VEXIQ management and Engineers, but I have been blown away by some of the recent constructions. I’m excited to see what you all can come up with given this extra but minor constraint.

Last years contest is here (Rapid Relay - 1x parts for the win holiday contest) if you were wondering how last year worked out.

Ah yes it has come back
If I have time I will compete, but I am crazy busy doing VEX and preparing for Midstate violin and clubs

Is this for current students only? I competed last year and didn’t get a change to do the holiday contest (lack of parts/CAD).

Under 18 for prizes, all ages for bragging.

Reminder, three weeks to go, so start gathering up those 1x parts. Lots of you are going on holiday break and you want to make sure that you are stocked up!!

Me to!! And happy Holiday to @bkahl !! But now is the time to toss down those cookies, ignore Aunt Sandra that says “Vex is just a toy”, Turn to your 15GHz CPU with 128 GB of memory with 3 GPU’s (just like @bkahl has on his desk) and fire up the CAD program and create the winning robot.

This is the easiest challenge in a decade. Grab any of the claw bots, reduce down to paired up 1x instead of 2x parts. Even Huey can be reduced to simpler forms. Remember you are only limited to the 1x parts on hand, or for the CAD entry for the 1x parts in the catalog. 180 Scorpion in 1x is a snap. Revolver is almost all 1x parts now. And Huey, soooo simple. Even Uncle Roger would say FUIYOH on how easy this is,

After unwrapping your gifts you have 6, 7 or so days to make this work. But it’s a hard deadline to meet. Don’t get caught with @Bailey_Kahl at home eating his favorite ginger snap cookie and not cleaning the forum queue out.

this was quite the inspiration😆

@foster, What form do you want the submission to be in? Pictures, videos? Uploaded directly to VF or in a Google Drive?

Ohhh, I’m excited!!

I want pictures of the six sides of the robot uploaded here. Doesn’t need to be 4K resolution, but enough to hole count. In prior years I’ve built some of the submissions.

If you have a driving / reveal video then a link to wherever you host the video is fine.

If its a CAD submission a link to someplace we can all see it.

If you are going to compete in events with this let me know.

Looking forward to seeing what you came up with.

I present to you, the 210-mech!
Specs:

  • 2m drive 2:1
  • 2m 4-bar 5:1
  • 1m claw 1:1
  • planning on adding a beam mechansim or an h-wheel with the last motor.
Photos of the 6 sides of the robot






This robot features the innovative 210-mech: a four bar that has both linear and rotational motion at the end.






This robot can make 2 stacks with ease and invert them!




!!!
This robot can even flip itself back on its wheels, so no more excuses kids!
https://photos.app.goo.gl/rXUaTFUbBUSNyrGUA (I can’t upload videos to VF, so here are some short videos of the robot doing things)

Since I am not IQ-eliglble (16 years old) I will not be competing in events. This robot will merely serve as a practice partner to the team I am coaching.

If yoou have any more questions, please let me know!

The kinematics on the 4 bar is pretty interesting. I’m out so I can’t watch the video. Can you post a picture from the bottom, I would like to see how you supported the center.

This is a solid design, did you CAD first or just snap&go?

Here’s a picture of the 4-bar support:


Basically, I had to use a bunch or triangles to get everything supported (I love trig!)

No, this was free-built.

For this challenge, I wanted to make an innovative robot to the table (well, computer). I also wanted to use this robot to teach my students differnet techniques.

I noticed several teams used this “180-mech” robot, which I assume you are familiar with. The biggest issue with that design is being able to stack pins, since the normal 2 bar angles back too much. One day, when playing around with IQ pieces (and failing to make a DR4B), I accidently created this masterpiece: (Can someone help name this please?) This mechanism allows me to have all the benefits of a garden-variety 4-bars while having the rotational advantages of a 2-bar.

Finally, I had a good excuse to build a 180-mech. I started with the drivebase. Being limited to only 1x beams, I had very few options for the drivetrain speed. Eventually, I decided I didn’t need to spend too much time on this (my V5 robot needs some help…) and made a 2:1 ratio with only 1 wheel driving.

Next, I attached the… mechanism… to the drivetrain. I originally had the 4-bar thing angled at about -20-degrees, thinking that would help the pins stack, but I eventually made it more square. After this, I had the claw.

I wanted to retain the double-stacking ability, but the limits to 1x beam geometry made this too difficult. I decided to stick with a single-pin claw. This worked pretty easily, allowing me to test the robot out.

Due to the “light-ness” of the robot, I had some issues with the robot tipping. However, this actually allowed me to score on the standoff goal. It isn’t consistient yet, but I’ll tune it later.

If you have any more questions, please let me know!

im locked in on this right now even thou my comp robot is temu grade

I’ll build a little something when I get back from vacation :smiley:

Hilarious as I originally read this contest as using 1x only of each structural part so only one 5 long etc and thought this is 1: going to produce some hella asymmetrical jank robots and 2: the first submission is sweet but there are so many repeat pieces on it, then I went back and read you original post again!

That’s such a cool bit of 1x engineering. The flip/invert function of your lift bar is something else (meaning really clever). I realize you’re running out of holes on the 1x20 transparent orange beam (my son’s team has several of these from various Hexbug sets) but it appears you have a few in the middle where you could make some sort of beam “guide” to get the distance just right to stack those inverted pins. I’ve seen a lot of the 180 bots use those to orient the beam. Overall this is one of the cooler things I’ve seen done with IQ stuff. Hat tip!

Need to check out the deadline for submission, don’t want you to miss out on the prize money. So far @BananaPi is taking the entire pot.

Yep, my flight leaves tomorrow. I already started something, I’m just finishing it up when I get back. :slight_smile:

Glad to see you caught up with this years entry, take a look back to last years, they are really cool too.

36 hours to go, get those 1x parts out!!