Quote Originally Posted by driftspin View Post
Hi guys,


I recieved my cheap webcam today.

It is a ASHU H800 1080p cam, about 18 euro incl shipping.

https://a.aliexpress.com/Zos0Tdull


If internals are really 1920x1080 (windows says it is) this might be an ok device.

The chip size is ~6.5mm x ~3.2mm


So this sensor could be 0.003mm ish per pixel.

I wanted a bigger size sensor than the 640 pixel 2.5 mm one. Because of the width of the laser line on my bosch laser


Does the software account for not having the sensor 100% level?
I hope it does.

Or does not having it level actually help achieve sub pixel accuracy .

The lens can be screwed out and put back on so it is only exposed to dust while in use.

I wil drill 2 mounting holes in the housing and bolt it to a piece of 4080 profile.


I will try to install the software and try icw the bosch laser i have.

Will report back on progress.





Verstuurd vanaf mijn SM-A320FL met Tapatalk
The app expects the sensor is in portrait orientation wrt the laser line, it then sums the intensity over each pixel row (sensor column) to produce an intensity curve which it post processes to determine the centre. This means if the laser line is at an angle to the sensor it doesn't matter, it should always find the height of maximum intensity at the centre of the sensor width. You don't want a crazy angle as it will reduce accuracy, a few degrees is fine though.

I'm also going to move to a larger sensor, it takes too long to align the laser to the 2mm sensor over any reasonable distance.