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Micro:bit sensor project idea

Posted: Sun Mar 17, 2019 2:22 pm
by koops266
I have not found any forums dedicated to the micro:bit so please forgive me if this is unrelated.

I am required to design a working prototype for my university course using a micro:bit provided. I am able to use additional hardware etc to make my project as needed.
I had a few ideas based on the sample projects in the workbook of the "inventors kit".

Would it be possible with the light sensor or sonar on a hand held device, to drag across someones face say. The sensor detects distance in some way, and presents the data as values

eg.
11 12 15 19 15 12 11
12 13 17 22 17 14 12
13 12 15 23 15 10 13
16 10 11 25 12 11 15
16 12 15 20 15 13 15
18 14 12 11 09 09 11

And i can then behind the scenes simulate this data as colours associated to values.

The idea behind this to prototype a 3d scanner.
Obviously on a much bigger scale, it would be 1,000,000 times more accurate and link directly to 3d software. My project requirements are limited to a microbit.

Is this possible to get distance values.

the sonar i feel would be too large (therefore too inaccurate) for this project of a face.
is there a way to measure light distance with a different feedback mech?

sorry if its a "noob" question.
I am Very new to electronics. more familiar with software code.

feel free to throw ideas at me also!!

The other 2 ideas i have which might be more realistic are:
1. light sensors/sonar along an area to represent speed/distance travelled
2. light sensors (like laser traps) that set an alarm off once tripped - but would make it more interesting.

Help :p
thanks.

Re: Micro:bit sensor project idea

Posted: Mon Mar 18, 2019 7:55 pm
by wghe
I think you are looking for some proximity detection through ToF sensor matrix.

https://www.st.com/en/imaging-and-photo ... tId=SC1934

Good luck!
WG