I will check out the config files. Are you running the BBB on a Comet? How much are you asking for the boards? Harley
On Thursday, January 12, 2017 at 8:08:18 PM UTC-8, Ralph Stirling wrote: > > 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 >>>>>>>> [email protected] >>>>>>>> >>>>>>> -- >>>>>>> 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 [email protected]. >>>>>>> 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. To unsubscribe from this group and stop receiving emails from it, send an email to [email protected]. Visit this group at https://groups.google.com/group/machinekit. For more options, visit https://groups.google.com/d/optout.
