Three different screens. The Manga screens were for the Replicape which was a 5 axis stepper driver module for 3D printers. One axis driver failed and support for the cape vanished. The two manga touch screens never worked well. I even sent the original back to demonstrate the problem. It was returned with the comment that nothing was wrong with it. Touch still didn't work in the corners so like a fool I bought the large Manga 2. It's really just a converted Cell Phone screen.
And the SD systems small board, although it worked, was also discontinued. And some of the pins for the button and display made running LinuxCNC difficult with the cape. And CAN bus was impossible without rewiring the cape. The other problem with the BBB is the HDMI interface is for lower res screens because that was the standard at the time. The 800x480 HDMI is discontinued. https://www.adafruit.com/product/2261 Maybe this one would work. Anyway, the key word is discontinued...discontinued...discontinued. Modern electronics has a lifetime now often less than the development time for a solid product. Not like the milling machine you buy and expect to use for 20 years. John > -----Original Message----- > From: John Dammeyer [mailto:jo...@autoartisans.com] > Sent: August 5, 2023 3:24 PM > To: 'Enhanced Machine Controller (EMC)' > Subject: Re: [Emc-users] Beaglebone black latency > > Me too. A closer look at the fine print and selecting the correct button shows > the actual CNC controller is $513 or $541 for 3 or 4 axis respectively. The MPG > is priced separately at $96. > > And this is why a BBB with a cape that included a Break Out Board with a few > relays etc. for under $100 would be quite the bargain. The question is then > what sort of display would be good. And you still need some sort of MPG to > go with it for also about $100. > > For $94 I can get, from amazon.ca a 7inch HDMI LCD (H) 1024x600 Monitor > IPS Screen Capacitive Touch Display Supports Raspberry Pi Jetson Nano > BeagleBone Black Banana Pi & Microsoft XBOX360, Sony PS4,Nintendo Switch > > And therein lies the problem. Creating something similar to the $500 Chinese > CNC controllers with touch screen will ultimately cost in the same $500 range. > But unless the MachineKit or LinuxCNC version is stable with a target life > similar to the life of the machine tool no one will spend the energy and time > to make that. > > The market isn't big enough to justify the work required. Which is why so > many of the Beagle Capes are no longer available. Next week there's an new > ESP32 with more bells and whistles. Won't do what the Beagle does but ... > > John > > > > -----Original Message----- > > From: Martin Dobbins [mailto:tu...@hotmail.com] > > Sent: August 5, 2023 11:44 AM > > To: Enhanced Machine Controller (EMC) > > Subject: Re: [Emc-users] Beaglebone black latency > > > > It makes me wonder which operating system they put on that Chinese > > controller, and what motion control system. > > > > Martin > > > > ________________________________ > > From: John Dammeyer > > Sent: Friday, August 4, 2023 7:41 PM > > To: 'Enhanced Machine Controller (EMC)' <emc- > > us...@lists.sourceforge.net> > > Subject: Re: [Emc-users] Beaglebone black latency > > > > My biggest issue with the Xylotex BBB Cape for CNC was that the logic for > > ESTOP was inverted. ESTOP was a N/O switch so if a wire was broken you > > wouldn't find out until you tried to save a body part from being injured with > > the ESTOP. > > > > _______________________________________________ > Emc-users mailing list > Emc-users@lists.sourceforge.net > https://lists.sourceforge.net/lists/listinfo/emc-users
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