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Here you go, https://github.com/paulius-zubavicius/pulleys-profile-generator

You need java to run it.

Hi Clive, yes there was a moat, I put it outside of the frame at one end. The rails are planar within 10um, I checked them with my laser software. Or at least they were when I fitted them, they have...

So I've just scoped the DDCS. An axis setup as per my machine, 1610 screw, 16x ustepping -> 320 steps/mm, max speed 10000mm/min.

As expected step frequency is ~53kHz, half period of 9.375us....

Hi Doddy,

So it turns out if you ditch the standard I2C/TWI wire.h library and display driver, crack open the 328p datasheet, write your own crude framebuffer and I2C non-bocking state machine...

Afternoon all.

I've finally got back to my machine project. I gave up with trying to create a planar surface in one shot and as the weather had warmed up I poured epoxy, this looks like it has...

Hi Bert and everyone,

Here are some renderings of the laser-plano-meter I've been trying to describe.
27468 27469

It consists of a square device sat on 4 spherical feet at the corners. 3...

Yes I could have done, using maths I even worked out it would cost £84 in electricity ;-)

I may still use the epoxy if this doesn't work out but this thread is about developing a open source...

This morning I had an empty house so I grabbed the opportunity to do some testing. I used the dewalt laser and my mostly completed gantry, the sensor was clamped to the rear of the lower Y bearing...

I took a punt and picked up a cheap (£25) Bosch laser today. Main reason was I don't want to tear apart my Dewalt and remove the lasers from the pendulum which I think would be required for our...

Not really no. If you want the rails to sit flat then you have to mill the extrusion anyway particularly with 15mm rail on 8mm slot.

When you set the rail you will need a setting tool to offset...

Hi Bert, I use these, only vga but work really well and super easy to take apart and remount on and solid block.

KKmoon USB 2.0 50.0 M Webcam, HD Camera, Web Cam with Microphone for Computer, PC,...

Hi John,

You are very welcome, I've been a bit busy with work, great to see you are making progress.

Yes it should be possible to grab higher resolution images from the camera giving you the...

Hi John,

Let me just sanity check your methodology. You have the sensor or wire on a precision positioning system. You move the system in steps based based on your dial indicator and click measure...

Hi Bert,

The sensor in your cam is probably fine, although if the overall dimension of the camera is only 8mm it maybe harder to work with. The VGA sensors we are using are 2mm across.

It seems...

See what I said above about it not working on a PI by default.

Hi Kit,

At the moment the app is only performing a gaussian fit in 2D, i.e. one spatial dimension say Z and intensity. I could probably add a 3D fit which would allow you to use a dot laser.
...

Hi guys,

Fixed some UI issues so it should work on a 1024x768 laptop screen (just for you Kit). I've also added linear regression to the measurements taken. This is because the best way to use...

Hi all,

I've put a new version up with some major improvements, starting to turn into a piece of software I might use!

So it will now allow you to record a bunch of measurements against a...

Kit,

You need java.exe on your PATH and setup another environment variable JAVA_HOME that points to the directory with the jdk in it. e.g. if java.exe is in c:\\java\jdkXXXX\bin\java.exe then...

Hi Kitwin,

Glad you are making progress. It is a bit of a pain to do if you don't already have a dev environment setup I agree. When I get time and when the software has evolved into a usable...

I've put the software up on github if anyone wants to play, I will add features as I need them or they are suggested here.

https://github.com/betzuka/laserlevel

Ok, I understand what you are talking about. The larger sensors are just as cheap btw.

This is what I'm going to do with the unit I've built.

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Thanks Andy.

I guess if the lens was canted slightly so the beam was not hitting the cylindrical face at the lens normal you would get a bowed line, but this should be easy to spot and also...

Hi,

Update 26/8/2019
Software to experiment with can be downloaded from here:
https://github.com/betzuka/laserlevel/blob/master/builds/laser.zip?raw=true
Unzip and run (double click) the...