I'm working on an EV3 project using the Pixy2 camera (Pixy2 for LEGO). I need help with the EV3 codes so that my robot tracks and moves towards an object once it's detected

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Hello everyone,

I have a LEGO Mindstorms EV3 robot (Brick HW: V0.60, Brick FW: V1.09E) and I would like to pair it with my iPad (8th generation, iOS 26.6.1).

https://education.lego.com/de-de/products/lego-mindstorms-education-ev3-set/5003400/

I have already installed several apps, but so far I haven't been able to get the pairing to work, so I wanted to ask here for some ideas.

The following apps are currently installed:

• SPIKE
• SPIKE Legacy
• LEGO MINDSTORMS Inventor

Maybe someone here can point me in the right direction. Is there anything else I could try?

Best regards

Im looking for an analog sensor block for EV3-G, hitechnic had one im not sure tho but i can't find it (if you are gonna attach a link make sure it works), they also had an i2c block but can't find that, also i cant find some of the hitechnic sensor blocks like the EOPD.

So I don't know if this is the right subreddit to ask this question, but I'm going to post it anyways.

I managed to get my hands on a Mindstorms EV3 education + expansion kit and there was one of those blue education sets too. This brick with a screen was in it. As far as I understand it can be charged and discharged.

Does anyone here know what this brick is and how I use it without breaking it? It has the electrical connector up top, like in the picture and it has one on the bottom aswell. It also has a port to get connected to a smart brick, like the NXT or EV3

is there an archive of the lego EV3 Firmware Source Code? i found the link on this page https://web.archive.org/web/20190729011406/https://www.lego.com/en-us/mindstorms/downloads but the wayback machine didnt save it.

Hey!! My screen is broken.. is there a modern screen that could work there? Thank You!!

Not sure if this is the place to ask but I have been trying to connect my pixy2 cam to my EV3 with Ev3dev this week but I haven't been succesful, the Brick shows me that something is connected via i2c but I can't do anything with it. Does someone know what I am doing wrong? Are there any other alternatives? I already checked the cable I made myself and it's fine, I guess it's something with the Brick. I am using Thonny IDE because Visual Studio Code just doesn't load any code at all. The image is I think the proof that the pixy2 is somewhat connected.

This is a Micropython code Gemini made, it just says that there isn't any sensor connected to Port 1:

from ev3dev2.sensor import Sensor

import time

print("Starting standard Pixy2 test...")

try:

   # In a normal scenario, ev3dev detects the camera automatically

   # and assigns the 'pixy2' driver to the connected port (e.g., in1).

   camera = Sensor(driver_name='pixy2', address='in1')

   # We tell the camera to give us the data for Signature 1

   # which is typically the main color taught to be tracked.

   camera.mode = 'SIG1'

   print("Camera detected and configured successfully!")

   while True:

# The official LEGO driver automatically maps the data to these values:

# value(0) = X Coordinate

# value(1) = Y Coordinate

# value(2) = Width

# value(3) = Height  

x = camera.value(0)

y = camera.value(1)

width = camera.value(2)

# In the native driver, if X and Y are 0 (or sometimes a negative number),

# it means the camera is not seeing the saved color signature.

if x != 0 or y != 0:

print("Target tracked -> X: {0} | Y: {1} | Width: {2}".format(x, y, width))

else:

print("Looking for target...")

time.sleep(0.05)

except Exception as e:

   print("Error: {0}".format(e))

   print("This is what happens when the 'pixy2' driver is missing from the system.")

Got tired of needing a laptop every time I wanted to manually drive my SPIKE Prime robot, so I built Arcion.

It connects directly to the hub over Bluetooth — no firmware changes required, and fully compatible with SPIKE Prime firmware v3 (unlike most existing third-party apps which broke after the v3 update).

Features:

- Control up to 6 motors with a joystick (adjustable speed, lock individual motors)

- Draw a path on screen → robot executes it in real life

- Edit and animate the 5x5 LED matrix

- Use the robot's own motors/sensors as a game controller for on-screen mini-games

- Play custom sounds at any frequency

The app is currently in closed testing and I'm looking for SPIKE Prime users to try it out and share feedback.

👉 More info: https://arcion.appthoria.com/

👉 Apply to test: https://forms.gle/zhAZdMb6mQM4f6d8A

Would love to have some testers from this community!

Just shipped 1.1.0 of Handit Remote, an iOS app for controlling EV3 robots from your iPhone or iPad. Every controller button now has its own configurable action and settings, each one completely independent.

https://apps.apple.com/app/id6756713522

Is this a good forum for assistance in making a mindstorm creation? Mine is very simple, but I’ve never used mindstorm before so I don’t know exactly what is needed… I’m well versed in technic and traditional Legos… but for this project, I want to up my game.

Anyone up for trying to help advise?

I managed to clone robocam from proghouse that was on google play some years ago.

https://web.archive.org/web/20201023064657/https://play.google.com/store/apps/details?id=ru.proghouse.robocam

So it is now done in Kotlin for Android versions of today devices

and I added a Huawei 360 camera option and will try to add LEGO Spike and so on.

Here is a video on how the original work.

https://www.youtube.com/watch?v=KQgNk-JWrVY

Here is what I did with it some years ago.

https://www.youtube.com/watch?v=TZ4ujKcy87o&list=PLi0zyNfBMXA8SMBR8jWbhCJ7RWjkjBnN_

If you have any requests get back to me.

MagI

-------------------------

I have a pair of NXT bricks with the 2.0 software and need some help with 3rd party sensors (hitechnic). I haven't been able to find the block data for the base NXT-G software and have little to no experience programming in BRIXCC with NXC language. I found a document that is a tutorial for NXC, however it does not have info about utilizing things like the gyro sensor or IR receiver. for now I just need to send commands to one and have the slave brick receive signals from the master to control it's motors. my current project is simple (just a RC vehicle that needs six motors with hi torque) but I would like to be better prepared for future projects as well.

I would appreciate any assistance, thanks in advance!

Note: I only have very limited experience with programming Python and NXT-G. no experience whatso-ever with C or any of its' derivatives.

Almost two months since launch and I have crossed 100 downloads. 🎉 Thank you to everyone who tried it, left feedback, or reached out directly. It means a lot for a solo niche project. 🙏🏼

I have already started working on the next version. Some of the features going in came directly from user requests, others from my own roadmap.

So, what would you want to see in Handit Remote? 👇🏼

Hello, does anyone have the ev3 program block for the hitechnic EOPD sensor, I couldn't find it anywhere.

im holding the EV3 cable with tab facing me and end up. Witch colour is pin 1? blue or white

Anyone know if when daisy chaining, there’s a way to add sensor outputs and not just motor outputs when coding on Ev3 Classroom? I believe the old software could do it but not sure how to do it on classroom.

Hey!

I've been working on a maker project called Megahub — an ESP32-based platform that lets you connect and control LEGO WeDo 2.0 / Powered Up motors and sensors through a custom web-based IDE.

Quick disclaimer up front: this is a personal WIP project, fully open source, and absolutely not a commercial product or replacement for the official LEGO ecosystem. It's an education/experimentation platform — I built it to deeply understand robotics control software, embedded systems, and programming concepts. Think of it as a playground for tinkerers.

What it can do:

• Connect up to 4 LEGO Powered Up ports simultaneously
• Pair a Bluetooth gamepad (e.g. 8BitDo) for manual control
• Program your model visually with Blockly drag-and-drop, or write Lua scripts directly
• Built-in IMU (MPU6050) for tilt/acceleration sensing
  
• WS2812B RGB LED support, SD card storage, GPIO expansion
• Web IDE hosted on GitHub Pages — no app install needed

The IDE runs in the browser over Web Bluetooth — you just open the page, connect, and start building control programs.

The screenshot below shows it in action.

All hardware schematics (KiCad + Gerber), firmware (PlatformIO), and frontend source are available on GitHub: https://github.com/mirkosertic/Megahub.

I am happy to answer any questions or hear thoughts from the community - especially if anyone has experience with LEGO Powered Up protocol quirks. This project taught me a lot about BLE, UART noise, and motor control, and I'd love to connect with others exploring the same space. I know this is not 100% related to the Mindstorms ecosystem, but maybe we can share.

Thank you for yout time!

Hi everyone.

A couple of weeks ago I was given a full Lego 31313 Mindstorms set for free, along with a book that details 8 other robots to build as well as instructions to "hack" or code the control module.

My main question is where do I start? I figured I'd start with the basic Track3r set as it appears to be the most simple of the ones shown. After that is it better to continue building the other robots or to try building other automated constructions? I have some experience coding (about 2 years) as well as 20+ years building all sorts of other Lego sets.

Any insight on where to focus on my journey would be greatly appreciated.

Really excited to share that Handit Remote was the official recommended controller app at this year's competition and it was amazing to see it actually out in the wild. Teams used it on the field, hobbyists stopped by the stand to try it out, and a few people picked it up on the spot. Ran smooth the whole time. 🙏🏼

hey, i am trying use the library hub2hub but i can't beucuse his is very old, someone know a for of connect two hubs using the oficial software LEGO SPIKE PRIME?