Feb 23

GRBL Firmware Bug

Posted on February 23, 2021 by Konstantin

Look at this:

Yes, my laser cutter went crazy and have burned the base plate.

Am I right blaming GRBL firmware? Well, it is not black and white

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Feb 21

Back Light for a microscope

Posted on February 21, 2021 by Konstantin

I made a back light for a microscope based from some very cheap but powerful 12V LED panel!

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Feb 21

CNC a spoon

Posted on February 21, 2021 by Konstantin

3D Designing a cube and a cylinder is easy. Try to design a spoon!
Well, I made one:

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Feb 21

Starfish Coaster

Posted on February 21, 2021 by Konstantin

Yet another laser cutout coaster designed in Inkscape:

Feb 02

Laser engraving plus paint

Posted on February 2, 2021 by Konstantin

Laser engraving is cool, but it misses colors. How about a little touch of acrylic paint?

Result looks pretty cool!

This is Belarussian coat of arms “Pahonia”, which means “chase”, BTW.

Shall I do more of those types of projects?

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Jan 31

Program STM32 via USB

Posted on January 31, 2021 by Konstantin

STM32 is an awesome alternative to Arduino board. Unlike 328P, it has native (fast) USB support. It is cheaper than 32U4. And it faster, 32 bit and has 10x more RAM!

Also, unlike Atmel, counterfeits wannabes are clearly identifiable (look at the microcontroller on your board. If it is CH32 – throw it into a trash can. STM32 and CKS32 are good)

It is easy to make it work – just follow the instructions:

STM32 Arduino Instructions

(you can also use ST-Link V2 and connect to the board via 4 wires. I have found this approach very reliable. You can both flash firmware and upload sketches from Arduino IDE. I set both boot header switches to “1″ when I do it. But programming via USB is more convenient, right?)

Ok, so you follow the instructions from Windows 10 PC and try to program your board via the USB and it cannot find the DFU.
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