Download QMK TOOLBOX
Download the HEX FILE
Select the Downloaded HEX file from wherever you saved it
Select Auto Flash
Connect the USB arduino to your comupter
Short RST and GND on the arduino
Then, your arduino gets programmed! – Easy 🙂
Bit of a change of pace from the electronics, onto the CAD…Here’s a first draft of the first key on the C64 Keyboard – the Left Arrow!
Done at full scale, then at 50% scale
Straight as a laser beam!
Not much really – Shift Lock keys just arrived off the slow boat. The pinouts are confirmed, I’m going to hit ‘go’ to manufacture after another quick check on the PCB
Also, from a bit of researching, i’m not so sure the Diodes are needed.
I may have to make two batches of board, one with, one without
After a loooong weekend and sneaking in a few hours – Success with the keyboard layout dimensions!
There’s few tweaks here and there remaining to align things perfectly and also to add some nice Silk Screen artwork
And, how I got there!
After spending a while lining up the buttons and generally making the PCB layout a bit tidy, I figured I’d print a 1:1 and see just how well it aligns….
Been a few months of non-tinkering really, Just had a heck of a time getting anything useful printing in the D9………..Finally solved that issue – combination of badly cut PTFE tube and poorly machined throat caused major under extrusion and, well, that combined with two kids, a wife working away often meant zero time to actually tinker……
Anyways, in that ‘why the hell shouldn’t I go buy something that ‘just works’..’
I saw the Snapmaker 2 on kickstarter and got the old braincells working,
I have at home currently several devices that are taking a bunch of space
So after seeing the kickstarter I Decided to try to sell the 3020 on Facebook marketplace
After several dozen people “interested” and several hundred messages, I now fear for the future of the human race having any semblance of collective intelligence and have decided to keep the 3020T
Revisiting my earlier adventures, The CNC, being a parallel port version won’t run on windows 10, nor will that little dongle thingy I purchased
So, I purchased a new little dongle thingy –
It’s a rather clever little GRBL shield Which doesn’t have any Driver chips bulit in! it just wiggles the relevant data lines of the DB25 port in the back of the CNC controller…..
It’s alive again!……now back to the fun of calibration and figuring just how to use it, whilst allocating my decreasing waking hours to having fun tinkering…….
Getting right into the guts of this thing, there’s a few basic discoveries
There’s two names on the market –
Monoprice MP Maker Pro Mk.1 is an alternate supplier of this printer – Externally they look identical!
Reading up in-depth more about Arduinos, CNC’s and ‘stuff’, I’ve found a superb product called TinyG
Reading further on the Synthetos website about the TinyG, I discovered a forked branch of the code that is called G2. It’s basically a TinyG Arm port that uses their G-Shield, which at the time of writing is, unfortunately sold out.
I’ve noted that the G Shield uses TI’s DRV8825 stepper drivers
Whilst Googling those parts, I discovered – This website that basically suggests that they’re pin compatible with the A4988 used in those cheap drivers I picked up. Main advantage of the G-Shield device is that it can do 1/32th of a microstep, so much finer resolution for the CNC. Given that i’ve trouble locating the spindle within roughly the 30×20 area of the CNC without smashing into the limits, I think i’ll manage with 1/16th for now
Oh, the picture.
I think i’m going to spend more time buggering about making the thing cut than actually cutting anything…..Still have the software to go yet
Finally, why I haven’t bought a Syntheos product.
I can see that the TinyG V8 board has been out a little while now, there’s headway being made to V9, even some reports of them out for testing. I’m on the wall right now and really happy learning, tinkering. i’ll be jumping and buying a V9 when it’s released :-). V8 is a very well reviewed product so I can’t wait to see what V9 has to offer.
For those of you less into the electronics and general tinkering – highly recommend to get a V8, it’s almost plug and play with these cheap, chinese CNC’s
Have been reading up on control methods for the CNC (yep, too much reading, not enough actual do-ing),
Stumbled across something called GRBL, which to summise,is, “an arduino CNC controller”
There’s a shedload of websites regarding GRBL…..so……
I actually own various quantities of each of the following microcontroller boads that i’ve acquired over the years, a few more modern ones include
And, given my recent discovery of GRBL,and a penchant for hoarding un-used demo boards,
I’ve purchased one of these………
It’s a blatant clone of a couple of other shields out there, at under eight AUD though, it was worth a punt
I picked up five of them also….for just under $14 AUD, three for now, a fourth if I ever figure out 4 axis machining and a fifth as i’ll probably blow something up
so, for a grand sum of $13.81 Plus $7.63 = $21.44 delivered, I have a nice CNC Shield for my Arduino