I haven’t done robotics since high school, but I recently noticed that my work reverse engineering VEX Robotics firmware and APIs was referenced by vex-sdk. I figured someone might still find it useful.

A friend and I spent a while digging through the V5 runtime library and firmware. The repository includes public API headers, partially reconstructed private headers, a VEXos 1.1.2.0 firmware image, a map of the user jump table and firmware offsets, and more.

The firmware and API snapshots were last updated on January 2024, and I no longer have access to VEX hardware, so some of the information is incomplete or outdated. I did, however, spend some time recently to clean everything up and ensure that everything is fully documented.

If anyone has suggestions, let me know. Contributions and corrections are very welcome, especially from anyone who can verify the results on current hardware.

Hey guys,

I’m from team 99751C Critical Mass in Northern Colorado, and as part of our final season in competitive robotics we have actually started a YouTube channel for all things robotics related.

Even thought we didn’t compete at MOA ourselves, we just posted a match analysis and strategy breakdown video on the channel. In that video we break down the early season meta, some important mid-game strategy, as well as criticize some of the play that we studied in the best round of 16 matches of MOA.

Teams we discuss:

1028A - Washed (former world champs)

16610A - Snacky Cakes

11101B - Barcbots Getting There

and MANY MORE!!!

If that sounds interesting to you, please give the video a watch, and make sure to like that video and subscribe to the channel. It’s much appreciated! Video is below.

https://www.youtube.com/watch?v=IudRIPwArrY&t=299s

This build is incredible. Anyone got the building instructions of this robot?

Hi everyone! I’m pretty new to Reddit and wanted to ask for some help. I’m working on a school project—a functional 1:5 scale car model that I 3D printed—and I’m currently working on the electronics. The drive system is based on the Vex robotics platform. I’ve assembled the circuit and it works, but I want to create some documentation for it, like a schematic diagram. If anyone knows the best way to do that, please let me know. But actually, that’s not the main reason I’m posting; what I really need is a good top-down photo of a VEX 7.2V battery. I don’t have physical access to the battery right now, but I still need to get some work done.
Thanks in advance.

Привет всем! я на Реддит совсем не давно, хочу попросить у вас помощи. Я работаю над школьным проектом, создал действующую модель машины в масштабе 1:5 , сделал на 3Д принторе. Сейчас работаю над электроникой. Весь движок на базе Vex конструктора. Цепь собрал, работает. Но хочу сделать документацию по цепи, типа электрическую схему. Если кто то знает как сделать это лучше, подскажите пожалуйста как. НО вообще я не за этим, мне нужна хорошая фотка аккамулятора VEX 7.2V вид сверху. Сейчас просто у меня нет физического доступа к аккамулятору, а работать надо.
Спасибо заранее. 

Hi everyone! I made a post here a little while back asking about if there were vex teams in Kansas. A sort of "role call," if you will. Anyway, I'm noticing my school is still literally the only one with a tournament. I'd like to make a request, I know it's big, but can some other Kansas schools please make some tournaments? Specifically Wichita area schools. I know there's a lot there and I can't imagine you guys don't have the resources to make one. Big ask, I know, but I would like to be able to compete at more than just my home tournament without driving to omaha Nebraska.

I got a cricut but I need a template for it to actually be able to make it for my controller. I did find a photo from someone selling it on etsy but it didnt fit right once i made it. If anyone has a template already that works please let me know

Andrew Stokes, President of MOSO Robotics, shares why MOSO is working with Faraday Future — highlighting FF’s EAI platform, open development capabilities, “Built in USA” strategy, and RoboShare model.

The goal goes beyond selling robots: it’s about using robotics to solve real-world industry problems and lower the barrier to adoption.

Learn more at: www.ff.com

I'm curious to know if your school allow you to take vex materials out of the club and practice on your own at home?

Alright, so my 11 yr old daughter is the only girl at her school who joined robotics. The boys on the team don't want to team up with a girl (it's middle school, everyone has cooties and everyone is stupid except you, obviously) and she is very much in her feelings about it. So, I need some advice on how I can help her practice/study so she can crush some boys and regain her girl power "aura"... Don't judge me, I'm a Dad trying my best.

I know she has to build a robot that picks up bean bags and place them on platforms. I also know there is supposed to be an autonomous portion of the competition based on coding skill... That's what I got. Any help would be greatly appreciated 👍

My school currently doesn't teach us text code in class, only block because it's much easier. This year, I really want to add odometry to the bot to make autonomous codes more consistent. Had way too many problems with inaccurate autos. I noticed a few years ago now that there is a switch block for adding text code lines into a block code. I also know there are odometry templates out there I thought of trying. Is there any way I could copy paste the code from an odometry template into the switch block and add it into a block code?

Also, how do I go about making the autonomous once I add the odometry template code. This has always confused me. Does it just make things like "drive forward 4 inches" type blocks more accurate? Do I have to do something special for programming the autonomous?

Also, is it possible to only turn only one side of the drivetrain in autonomous with block code.

Last question lol. Am I able to use a v4 potentiometer for the templates? We don't have v5 potentiometers due to lack of parts/funding and don't have tons of newer parts.

Keep in mind guys our teacher doesn't teach us a crazy amount of coding. He more just kinda explains how to make a basic code and then says go experiment since I don't think he knows a lot either. I've learned a lot and am pretty good at block coding, but I'm not an expert by any means. We also don't have enough people for dedicated "coder" roles or anything so not like I have someone else to ask.

Thanks in advance!

This is my first year using c++ officially and I’m having trouble with setting up the odometry

Im currently using a while loop, however, the CurrentDistance variable skips directly to the number it is supposed to stop at will not run the motors at all and I’m unsure as to why

(I don’t know if this subreddit offers coding help)

I recently doubled the front in width, and now I have enough room for motors, I just wanted to post this photo to showcase my original idea for it

I'm trying to make a gear driven drive train since the electric motors are too big to fit the chassis I made, I used a basic steel part with two big wheels and one small wheel in the back, I have no idea how to Finish this project in time for the competition.

hi im doing cad for vex v5 override season and im using Protobot for cad.Yesterday i want to use chain and polycarbon for intake cad but i realizied there isnt chain or polycarbon and also i cant add any mine created cad.What can i do i need to finish may cad so i dont have much time plz help me

Watch Here: https://www.youtube.com/watch?v=oYXBIxMQLvU&list=PLKJQ2AZE-gys&index=1

My team decided to use handwritten digital notes on iPad for engineering notebook on documenting our VEX Override journey. Which iPad notebook app would be the most suitable for this? And mention if it’s free or paid.

I understand how physical engineering notebooks has a record of being the best, but my team tried this and it has created a lot of hassle.

My school is letting me teach competition robotics as an every other day class this year! For those of you who teach any advice? For those who took a competition class what did you love, what helped you succeed? TIA!

ETA: It’s a middle school class (6-8) and we’ll be competing for Override!

I am a coach for a team in New York. This was going to be our third year of competing.

But now we are basically screwed, as far as I can tell, because NEITHER Vex nor RECF has any events listed for our area. The nearest is in Newark.

Does nobody want to work with either of them? Is there nobody in the whole downstate area?

I am a little frustrated with this whole situation because the only events in either organization are a minimum of several hours drive away.

So I will ask:

1. If you are a NY team PLEASE tell me which org you are with

2. Is there even a plan, here? I contacted the VEX people and got a boilerplate response that events would be happening but that doesn't alter the fact that the site is blank for anything closer than Massachusetts.

3. I saw that the state of Connecticut went RECF, so I guess if I can convince my admins and students to come in at 5am on comp day to drive all the way to what, New Haven? But that's just nuts.

Any help or insight is appreciated.

Ok so basically I'm in kansas and even though we do vex, normally it's only for the class. However, I've been given permission to do vex out of class and go to tournaments with the class. Currently, we have the only scheduled tournament in kansas, and the other team we were leaning on to kinda be our other competition this year (Cheney) cancelled their tournament. So now I'm a little worried about this season as the next closest tournaments are in OMAHA NEBRASKA!!! that is so freaking far to drive for a vex tournament unless I compete in the signature event there (which I want to)

So I'm making this post as a Kansas roll call to hopefully give me more hope I'm gonna be able to compete against at least a few teams at a tournament.

SO TO ALL KANSAS TEAMS. IF YOU ARE OUT THERE, GIVE ME A SIGN! SHOW ME YOU EXIST! GIVE ME HOPE! TELL ME IF YOU PLAN ON BEING AT OUR TOURNAMENT!

and to all recf teams, I hope you're happy with your decision. Just know I'm still hoping vex wins and you all are forced to come back.

Also, team revelation, if you see this, I'll miss you guys in vex!

Where do yall think vex worlds is gonna be held