It was such a simple design that I didn't bother with a BOM. I started with the Probotix config files, but can't guarantee that my board is still completely compatible with the PBX-BB. The "engr480a" hal and ini files work with my board.
-- Ralph On Thursday, January 12, 2017 at 11:20:27 AM UTC-8, Harley Engholm wrote: > > Do you have a BOM for the board and will the configuration files for > Comet_NP for the PBC BB work and how much for the PCB? Looks like a good, > simple setup. > Harley > > On Thursday, January 12, 2017 at 10:43:44 AM UTC-8, Ralph Stirling wrote: >> >> I made one mistake on the (hasty) board layout I did, which requires >> pullup resistors >> to be added to the digital input pins at the BBB headers, but otherwise >> they did the >> job for me. They are nothing fancy. You can look at my documentation at: >> http://gab.wallawalla.edu/~ralph.stirling/misc/bbbcape to see if you are >> still interested >> in a blank board. >> >> -- Ralph >> >> On Thursday, January 12, 2017 at 10:36:44 AM UTC-8, Harley Engholm wrote: >>> >>> Have the boards you had made worked well for a probotix type setup? I >>> have a V90 and an asteroid and am now working on a diy engraver that I want >>> to use the BBB on. Finding capes for CNC only instead of 3D printer setups >>> has been a challenge. I would be especially interested in your board since >>> it seems you are working on the same type of equipment. I contacted Len and >>> he said the new version of the PBX BB won't be available for at least a >>> couple of months. >>> Harley >>> >>> On Sunday, September 18, 2016 at 10:24:39 AM UTC-7, Ralph Stirling wrote: >>>> >>>> Not finding anything available that I liked, I have designed a simple >>>> cape myself >>>> and will be getting a batch fabricated this week. Would anybody on the >>>> list be >>>> interested in buying a bare board for $15 each (+ shipping if outside >>>> US)? >>>> >>>> I use a cheap LM2596 dc-dc converter module off ebay for powering >>>> everything, >>>> and Toshiba TBD62083 drivers to provide protection for the BBB. These >>>> are >>>> open-collector, so loads need to be +V referenced. The +V can be >>>> 5-24V. The >>>> step/dir signals are intended to drive 5v inputs, but the GP outputs >>>> are intended >>>> for 24v loads (but can switch lower voltages fine). The inputs are 24v >>>> capable. >>>> >>>> I designed it to work with the Probotix Comet configuration (as I >>>> already have a >>>> PBX-BB board) for step/dir and home/limit connections. The general >>>> purpose >>>> outputs will need additions to the hal file. >>>> >>>> -- Ralph >>>> >>>> On Thursday, September 15, 2016 at 8:38:15 PM UTC-7, Ralph Stirling >>>> wrote: >>>>> >>>>> I came across this oddity while poking around this evening: >>>>> >>>>> http://www.waveshare.com/CAPE-for-Arduino.htm >>>>> >>>>> The price is right, the claims sound good, but how does this >>>>> thing handle 5V arduino peripherals without any active (or >>>>> passive for that matter) circuitry? The schematic just shows >>>>> the arduino sockets connected to BBB pins through selectively >>>>> stuffed 0 ohm resistors. Looks like a good way to burn up a >>>>> BBB. Am I missing something? Back to my Kicad session... >>>>> >>>>> >>>>> On Thursday, September 15, 2016 at 6:35:24 PM UTC-7, Dave Cole wrote: >>>>>> >>>>>> I was in a plant where they make a large number of boards on multiple >>>>>> lines and I looked at their automatic test fixtures that probe the >>>>>> boards... and all of them were wire wrapped! So maybe not "that" >>>>>> retro! >>>>>> :-) >>>>>> >>>>>> Dave >>>>>> >>>>>> On 9/15/2016 8:28 PM, Ralph Stirling wrote: >>>>>> >>>>>> You would have to suggest hand wiring :-). The proto capes I've seen >>>>>> don't look big >>>>>> enough for the dip buffer chips and connectors, but I'll look at that >>>>>> option a little bit more. >>>>>> I guess I could use generic perf board material while I'm at it. I >>>>>> wonder if I have enough >>>>>> wire-wrap sockets and wire to go really retro? >>>>>> >>>>>> On Thursday, September 15, 2016 at 5:09:09 PM UTC-7, Charles >>>>>> Steinkuehler wrote: >>>>>>> >>>>>>> On 9/15/2016 5:27 PM, Ralph Stirling wrote: >>>>>>> > I have decided to use Machinekit running on BBB's in my >>>>>>> Manufacturing Systems >>>>>>> > course for >>>>>>> > senior ME students. I've been using old PC's running Linuxcnc the >>>>>>> past several >>>>>>> > years, and >>>>>>> > the old PC's have been failing. They also take up a lot of space >>>>>>> in the lab. >>>>>>> > I've got one >>>>>>> > Probotix PBX-BB cape, which is perfect for my needs, but Len is >>>>>>> out of stock on >>>>>>> > them, and >>>>>>> > won't have any before his design revision in 3-4 months. I have >>>>>>> external >>>>>>> > stepper drivers. >>>>>>> > >>>>>>> > Does anybody know of any capes that aren't already featured in the >>>>>>> wiki? I've >>>>>>> > looked at >>>>>>> > all of those, and they are either too expensive, unavailable, or >>>>>>> too fancy. I >>>>>>> > just need 3 or >>>>>>> > 4 channels of buffered step/dir, buffered home inputs, and a few >>>>>>> gpio's. I've >>>>>>> > got a design >>>>>>> > of my own underway, but only have about 3 weeks until I need to >>>>>>> have these >>>>>>> > running, and >>>>>>> > don't think I can pull off my custom design in that time. I need >>>>>>> eight or nine >>>>>>> > boards. >>>>>>> >>>>>>> You could build your own manually using a prototype cape and a few >>>>>>> through-hole buffer chips. It sucks soldering 8-9 boards up by hand >>>>>>> with "flying wires", but it shouldn't take more than a few hours if >>>>>>> you're decent with a soldering iron and have the right tools (a good >>>>>>> set of diagonal cutting pliers and a nice wire stripper). >>>>>>> >>>>>>> -- >>>>>>> Charles Steinkuehler >>>>>>> cha...@steinkuehler.net >>>>>>> >>>>>> -- >>>>>> website: http://www.machinekit.io blog: http://blog.machinekit.io >>>>>> github: https://github.com/machinekit >>>>>> --- >>>>>> You received this message because you are subscribed to the Google >>>>>> Groups "Machinekit" group. >>>>>> To unsubscribe from this group and stop receiving emails from it, >>>>>> send an email to machinekit+...@googlegroups.com. >>>>>> Visit this group at https://groups.google.com/group/machinekit. >>>>>> For more options, visit https://groups.google.com/d/optout. >>>>>> >>>>>> -- website: http://www.machinekit.io blog: http://blog.machinekit.io github: https://github.com/machinekit --- You received this message because you are subscribed to the Google Groups "Machinekit" group. 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