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Forum Index : Microcontroller and PC projects : STM32 Blupill and / or Pico

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PhenixRising
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Joined: 07/11/2023
Location: United Kingdom
Posts: 1581
Posted: 08:37pm 23 Sep 2025
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Very cool but not clear if you do/don't have LIDAR and if so, which one?
 
stef123
Senior Member

Joined: 25/09/2024
Location: United Kingdom
Posts: 105
Posted: 09:04pm 23 Sep 2025
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My self-built robot vac doesn’t have one, but the second Neato robot vac, which has a defective mainboard, does. I’m not sure of its exact type, but it might be a common one.

It outputs the current LIDAR angle (in 1 degree steps!), the measured distance per angle, and the returned signal strength via serial at 115200 baud. As far as I remember, it spins at 300 RPM, so the LIDAR electronics are pretty fast in terms of measurements.

Before that, I tried to make my own LIDAR using simple TOF laser distance modules, and also some SHARP IR distance sensors — but no luck; they’re all too slow (20–30 milliseconds conversion rate, unusable for high RPMs). There are some pretty fast TOF sensors out there with a long range, but they can cost a fortune — in fact, more than a used LIDAR.
Edited 2025-09-24 07:05 by stef123
 
PhenixRising
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Joined: 07/11/2023
Location: United Kingdom
Posts: 1581
Posted: 09:34pm 23 Sep 2025
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I have a really neat one but I never tested it and it's back at the shop. Hopefully be there tomorrow. I love this stuff.

I have a pet peeve re: machine safety because the industry standard stuff is a joke. I want to implement these devices as a supplement. Obviously, I can't claim them to be officially certified safety devices but they will prevent the machine from running if conditions are not satisfied.
 
stef123
Senior Member

Joined: 25/09/2024
Location: United Kingdom
Posts: 105
Posted: 03:28am 24 Sep 2025
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When I started my training as an auto mechanic about 35 Years ago (though that’s not my profession now), I remember being shown photos before working on lathes for the first time - to make it clear what could happen if we weren’t careful.

Scalpings from long hair, or someone forgetting to remove the chuck key and getting their stomach split open — all real images of things that had actually happened in this very shop. Those machines from the late 70s had -no- safety features whatsoever.
Edited 2025-09-24 13:29 by stef123
 
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