Guys, be careful with the option from link nr.3, a customer says: "There's one glaring flaw: the micro-stepping jumpers don't work because they connect to ground instead of vcc. I had to modify mine. I removed all of the ground-side pins from the jumper pairs, then made a wire that reached each stepper driver's remaining jumper pins. One end of the wire connects to the +5v on the board and each of the other three ends was soldered to a jumper, which allowed me to send voltage to one or two pins on each stepper (I was able to enable 8x microstepping, which was fine for me). As for the flaw that another buyer mentioned, with the "step" and "dir" pins being reversed, you don't necessarily need to modify the board for that. Just compile your GRBL with the "config.h" file listed in the link on Banggood's CNC Shield product page. Overall, I'm happy, now that I got it working. The Arduino and the stepper motors seem to be flawless so far. And it only took 2 or 3 weeks to get to Ottawa, Canada via regular mail, so that's not bad."
On Thu, Dec 30, 2021 at 8:17 PM 'Oliver Seitz' via jallib < [email protected]> wrote: > Hi Hans, > > "how you did this?" > > Well, I didn't. I just said how I would do it. I usually do projects which > are not readily available or far to expensive. > > The raspberry pi is my desktop computer, or a video player, or the more > complex side of a project. > > My fridge, which is outside and needs heating in winter, is controlled by > a PIC. It's connected to a Pi zero W, which acts as nothing more than a > wifi interface to get the temperature curves to my screen. Yes, an ESP > controller would do it, but that's a new world I haven't entered yet. > > You shoudn't compare the raspberry pi to a PIC controller. It is a (cheap > and small and low-power) computer. > > Greets, > Kiste > > Am Donnerstag, 30. Dezember 2021, 17:39:28 MEZ hat hans < > [email protected]> Folgendes geschrieben: > > > Hi Kiste, > Thank you for responding. I bought a raspberry set with screen a while > ago, but because it's very different from JAI, I haven't done anything with > it yet beside running some ready-made programs on it. Can you give me some > info how you did this? > > Op woensdag 29 december 2021 om 14:16:31 UTC+1 schreef Kiste: > > Hi Hans, > > jal is not the language to decode almost any files. It is solely for 8bit > microcontrollers. Such a controller is an excellent choice to control > stepper motors in sync with an engraving laser module, but not for decoding > any data files. You would want something with more computing power, more > memory and other kinds of interfaces. > > For decoding files, I myself would use a raspberry pi, connected to a PIC > by UART. Then, I would transmit only simple actions like "go forward 300 > steps, then turn on laser, go forward another 100 steps, turn off laser" to > the microcontroller. > > On a complete little computer, there are libraries for decoding most file > types you may want to use. The microcontroller then can do the swiching > with fractions of microseconds accuracy. > > Greets, > Kiste > > Am Mittwoch, 29. Dezember 2021, 10:02:41 MEZ hat hans < > [email protected]> Folgendes geschrieben: > > > Hi all, > Having a lot of material like steppers laser etc i am now thinking about > making a cnc graving tool. I have not yet done anything with CNC etc. > My question : Is there a Jal lib for CNC decoding or other advices? > Thank in advance (again) > regards > Hans > > -- > You received this message because you are subscribed to the Google Groups > "jallib" group. > To unsubscribe from this group and stop receiving emails from it, send an > email to [email protected]. > To view this discussion on the web visit > https://groups.google.com/d/msgid/jallib/17de83e8-726d-45fd-8d97-acd61ab06dbdn%40googlegroups.com > <https://groups.google.com/d/msgid/jallib/17de83e8-726d-45fd-8d97-acd61ab06dbdn%40googlegroups.com?utm_medium=email&utm_source=footer> > . > > -- > You received this message because you are subscribed to the Google Groups > "jallib" group. > To unsubscribe from this group and stop receiving emails from it, send an > email to [email protected]. > To view this discussion on the web visit > > https://groups.google.com/d/msgid/jallib/2784b35d-bdb0-4a8b-96ac-a3187c468a27n%40googlegroups.com > <https://groups.google.com/d/msgid/jallib/2784b35d-bdb0-4a8b-96ac-a3187c468a27n%40googlegroups.com?utm_medium=email&utm_source=footer> > . > > -- > You received this message because you are subscribed to the Google Groups > "jallib" group. > To unsubscribe from this group and stop receiving emails from it, send an > email to [email protected]. > To view this discussion on the web visit > https://groups.google.com/d/msgid/jallib/954933892.245252.1640888269803%40mail.yahoo.com > <https://groups.google.com/d/msgid/jallib/954933892.245252.1640888269803%40mail.yahoo.com?utm_medium=email&utm_source=footer> > . > -- Vasi -- You received this message because you are subscribed to the Google Groups "jallib" group. To unsubscribe from this group and stop receiving emails from it, send an email to [email protected]. To view this discussion on the web visit https://groups.google.com/d/msgid/jallib/CABsDq%3D-%2B9Kyi75CzPknQvHEJNmUpnPhkFj2Tba%3Dq67LJdFyg1g%40mail.gmail.com.
