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Comment by alex_suzuki | Hacker News Reader

Anyone who finds this interesting might also like this one, it‘s not DIY – comes fully assembled: https://www.waveshare.com/roarm-m2-s.htm

I have one and the build quality is really impressive for the price point.

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There's also the 5-dof version that I've seriously considered buying at one point, but it's really hard to tell if the ROS 2 integration is any good: https://www.waveshare.com/product/robotics/roarm-m1.htm

A real shame there isn't a 6-dof one, since that's what you'd really need to grasp anything properly in the radius around the arm.

This is one of those things I have NO NEED FOR but I definitely would want one on my desk.

Nice. What do you use it for?

Reproducible test scenarios for barcode scanning with a smartphone.

Very clever. This use case would never cross my mind.

Unless it has to do something with the print quality itself, can't this be achieved using a stationary phone with its camera towards a monitor displaying 3D transformed barcode images ?

Yes, possibly. But reading from the screen is quite different from reading actual barcode prints, for instance you have to deal with Moirè patterns and such. And frankly it was just a good excuse to buy an arm. Sue me! ;-)

> for instance you have to deal with Moirè patterns and such

My understanding is e-ink displays will not be suceptible to that.

I might just have given you an excuse to buy a large e-ink display/monitor :)

Haha fair play, this is exactly how things should be!

I wish I had it a decade ago when I tested phone touch screens

Any such thing on amazon etc?

How is the software support?

I‘ve only just started using it via the web UI, no idea.

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