GRBL upgrade for K3 Mini CNC Laser Engraving Machine without Mods.
– Github (https://github.com/maz3dp/GRBL-SUKA-V3)
– Mini Laser engraver firmware.
– Support Board: STM32F103 based Board.
– Base Source : GRBL 1.1 (https://github.com/gnea/grbl)
– Recommended Software: LaserGRBL v2.8.50 (http://lasergrbl.com/en/)
– To download firmware, Serial Wire Debug (SWD) Debugger is required. Download via SWDIO / SWCLK pin.
————————————————————
Thanks, Mike Ratcliffe for your explanation.
I will add it to the description.
-STM32 ST-Link Utility v4.3 [download is at the bottom of page]: https://www.st.com/en/development-tools/stsw-link004.html#sw-tools-scroll
-St link compatiable programmer [I use this one] https://www.ebay.co.uk/itm/ST-Link-V2-Emulator-Downloader-Programmer-STM32F103C8T6-STM8-STM32-w-Cable/302106332464?ssPageName=STRK%3AMEBIDX%3AIT&_trksid=p2060353.m2749.l2649
– .bin [or .hex] file from the github link in the video
-Some pin headers and a soldering iron so you can connect the programmer leads to the board[just match up the pins on the flasher to the ones labeled in the github link as Vdd, gnd, SWCLK, SWDIO.
Plenty of videos on how to use the st-link software, remember to make a copy of the bin already on the machine in case of a problem.
————————————————————
source