Hello World, I’m Cristian, I make things (move). Before joining Balena, I worked turning OpenEyes into a product. It never hit the market, and never will, but I gained a lot of experience with edge machine learning, robotics, haptic feedback and the ROS stack. At my first interview for Balena, @ph…

Yes @dragomir ! I can’t wait to follow along on this thread!

Likewise, looking forward to building this one myself!

[image] dragomir: So, what’s next? Components SBC [|] Since the ability of running neural networks is one of the core features of this build, we obviously need a NPU (Neural Processing Units). These are specialized chips that run matrix multiplication, gradient descent and other building bl…

hello, nice project, I think it will be hard to keep the hardware cost close to the target point considering the budget ! For slamming, cartographer is far simpler and superior than gmapping For your motors controler, you need to check that it is able to handle your motors stall current, otherwis…

For those that don’t want/cannot build their own frame, there are a lot a kit for indoor or outdoor rover for cheap in most shop. Here is an example of a small outdoor rover frame for 40€ on Amazon with 4 12v motors and wheels. It is aluminum so it is easy to make more holes on it to put screw for e…

For power regulations, it is important to have lot of it as the motors will bring some noises. Generally, lm2596 based board are very cheap and quite sufficient. It is better to put a lot of regular to have stable sensors and protect them! Better have the 10cents regular burn instead of the lidar ! …

Hey @khancyr , thanks for all the feedback. I haven’t worked with cartographer yet, I’ll give it a try, thanks. The motor controller supports up to 1.5A per channel and the stall current of the 50:1 motors is 920mA. That’s actually a great point, i’ll update the CAD design to compensate for that. D…

I have used a lot of LM2596 based boards, hundreds, and very few of them actually work properly. A few don’t work at all, but most of them do work but never reach the advertised 3A. I still use them for some projects, but I can’t recommend it. Even if it’s more expensive, for this build I opted fo…

CAD and Fabrication I’d love to be able to give you an overview of the steps I usually take when trying to design something, but honestly, I can’t. My workflow is usually extremely chaotic, unstructured, and horribly difficult to document. So, while cleaning up the dozens of AutoCAD files related t…

That is why I just said they are sufficient ! For they price they are nice enough and allow to make mistakes on first builds. But yes for a serios build it is better to invest in serious electronics. We always get what we pay for ! Here is a shop with the i2c sr04 HC-SR04 Ultrasonic Sensor - I2C . …

Building a more accessible robotics platform

Show and Tell

jmakivic September 17, 2021, 7:01pm 15

@dragomir It’s so cool to see the progress that you’re making on your robot! I really like the in depth descriptions of your trial and error process as you build this platform.

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Building a more accessible robotics platform

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