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EDIT:
One very quick question to OP - are you confident that the wiring/polarity to the battery was correct?, it's the easy way to destroy a controller if reverse connected.

I was going to...

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 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

Hi All

As some of you may know I am interested in using a stretched very fine .008" piano wire to determine straightness using a microscope.

I posted my thoughts through this post here on this...

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...

Interestingly this seems to fulfil the mod requirements for the 3020/3040 etc for virtually no money:...

I don't see why not if the Grbl board can work with the larger working envolope

going by the photos of 3D printers the 3018 machines they use small plug in 1A stepper drivers like these
...

Your thinking is broadly correct, but you don't understand Opto-Isolators. Your chance of success lies with the type of illumination provided by the switches.

In operation, the internal LED...

Shouldn't need to experiment - everything should be relatively simple. I've drawn a basic diagram to give you an idea. Note that the colours of the wires mean nothing in my drawing, its just whatever...

The ribbon cables you have connected are for the motor. The stepper shield is made for the A4988 stepper drivers, and if you want to replace those drivers with something else then you need to connect...

Hi all,
I've finished my first CNC build, a three-axis router with a wooden frame. With all my DIY projects I usually try to incorporate natural materials where possible. For the CNC project, it has...

Here you go:

https://www.ebay.co.uk/itm/Aluminium-Yellow-Chromate/152851887537?var=452590243278&epid=9012428881&hash=item2396aeb5b1:m:mmoXzHT-fHBXPysBtCp9FLw

Why they still have it on the bay...

Microstepping - yes, half-stepping probably gives you as good a resolution as you need for a router, but the thing will run like marbles in a cement mixer! Go to x8 microstepping and it runs much...

Hi All

Some good progress. The saddle and Z Axis has been cast and machined.

25555

More photos at my blog at the other place.
...

Time for one last video in the series ! Some finishing touches . . .


https://youtu.be/vd-Ly1454rw


Still plan to measure the stiffness - I may get a chance to get in the workshop today and...

Hi All

At last the base, columns and cross-member are one and I don't believe I could achieve the level of accuracy obtained without a laser cut mold.
...

Found a photo of the setup I mentioned, it was just a lashup for a one off, it worked well. Note the bolted on wire support and adjustment unit

25421

Cheers!

So got a chance to make the new belt guides today.or simplicity I just 3D printed the bodies in my XT-CF20 - in this new design they don't take any real force as they are supported by the...

Hi All

I just completed the columns for the mill next is the base, an exciting step as for the first time the frame of the machine can be tested.

I have a full write up here....