Revisiting the 3020 CNC & General musings

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…….

Ramble over,

TinyG, TinyG V2, Arduinos

Gonna be slow few weeks….

Some researching on alternate control methods for the CNC, avoiding totally the old school parallel port…

Well, today the parts have arrived, I’ll be assembling them soon,

Looks like it’s Very early days for TinyG V2 and the CNC shields along with the Arduino Due..

However, good news it does seem.

TinyG V2 is compatible with the RAMPS-FD and modified RAMPS 3D printer boards…and another board I’ve just discovered  – GAUPS – HERE

Those devices use  the standard Polulu style driver modules – that use the A4988 Stepper Driver from Allegro MicroSystems

My CNC Shield V3 device also uses those devices.

So, fingers crossed, it should be, worst case a simple pin-reconfiguration, probably something I can do in some spare time here

TinyG and G2 – an idea for the future!?

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………

an arduino CNC Shield

SKU198457a(3) SKU198457aa

It’s a blatant clone of a couple of other shields out there, at under eight AUD though, it was worth a punt

it uses the standard Polulu style driver modules – that use the A4988 Stepper Driver from Allegro MicroSystems

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

a4988 2 A4988 1

so, for a grand sum of $13.81 Plus $7.63 = $21.44 delivered, I have a nice CNC Shield for my Arduino