Vasi, all Chinese kits have to be seriously touched before use, it's nothing special to cut a trace and solder a wire :) :P Check for the missing thermal vaseline in all kits and products having radiators... Double check things supplied at 5V connected with other things supplied at 3.3V...etc. The worst thing is when you have to deal with Chinese bandwidth (like Fnirsi DSO 110MHz say, 20MHz is...:o) Chinese watts or any other parameters you will wonder about... So. no big problem. Chinese cheap is expensive. Chinese hobby kits are fine. Hobby it suppose to modify and understand. Happy new 2022!
On Fri, Dec 31, 2021 at 2:51 AM vasi vasi <[email protected]> wrote: > Option nr.2 is the best from all angles. Free software, excellent > modularity, excellent online documentation, huge blueprint "database". > Instead of Arduino UNO R3, you can use a Nucleo board and gain in speed > (with the required grbl version built for STM32) just by moving the shield > from a board to another, matching industrial solutions. > > On Thu, Dec 30, 2021 at 11:17 PM vasi vasi <[email protected]> wrote: > >> 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 >> > > > -- > 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%3D8ogPGCM-gm2yGaPHzqeNoiGNWmz1XRTs4Op_gjzeq46Q%40mail.gmail.com > <https://groups.google.com/d/msgid/jallib/CABsDq%3D8ogPGCM-gm2yGaPHzqeNoiGNWmz1XRTs4Op_gjzeq46Q%40mail.gmail.com?utm_medium=email&utm_source=footer> > . > -- You received this message because you are subscribed to the Google Groups "jallib" group. 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