This depends a lot on what sort of machine you're trying to drive. A
"standard" CNC machine with step/dir typically needs a DB25 (aka:
parallel port) with buffered signals you can connect to external stepper
drivers. A 3D printer would more typically have low-powered "Pololu"
style drivers either on-board or via sockets along with some high power
outputs for the extruder and bed heaters. A more advanced system might
provide a control signal (+/- 10V, or perhaps PWM) to drive a motor
driver and provide for encoder feedback to close the servo loop.
...so it really depends on what sort of system(s) you want to support,
and how much you want to try to be a "one size fits all" solution.
On 3/12/2020 8:38 AM, Jason Kridner wrote:
Seeed is looking to not only build a Machinekit-focused Cape for BeagleBone
Black and BeagleBone AI, but to:
* Take in features and feedback from the community
* Contribute the design to open source and certify it as such
* Manufacture the design under the BeagleBoard.org name to support the
BeagleBoard.org Foundation and community
* Help assemble and provide software images configured for an open source
3D printer and CNC machine (with BeagleBoard.org and community guidance and
support)
* Offer a collection of additional accessories which might commonly be
needed
I am very excited about this because I know Seeed cares about open hardware
and also knows how to deliver solutions reliably and cost effectively.
So, what are your ideas about where to start on such a cape?
--
Charles Steinkuehler
[email protected]
--
For more options, visit http://beagleboard.org/discuss
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