Comments (7)
grblanon
commented on June 25, 2024
1
I need testers with a machine to help with this, until then there will be no updates from me.
Since you can flash Smoothie is the stock board based on a LPC176x MCU? If so it should be possible to try the plugin with the LPC176x driver too before swapping the board.
I have a machine that I can use to test the OPENPNP_Plugin. I am testing its integration now and will provide comments and issues as they pop up.
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terjeio
commented on June 25, 2024
I need testers with a machine to help with this, until then there will be no updates from me.
Since you can flash Smoothie is the stock board based on a LPC176x MCU? If so it should be possible to try the plugin with the LPC176x driver too before swapping the board.
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Wayne2580
commented on June 25, 2024
Hi Terje
I have two machines. Both machines use the same main board with a STM32 M4. These boards are flash protected so it is irreversible. As a precaution I also ordered a stock replacement board from the manufacture (Charmhigh) just in case. There is a long lead time and probably wont receive it until Feb.
I'm familiar using grblHAL only w the Phils Teensy 4.1 being used for 5 axis CNC mill. OpenPnp is new to me and I dont know the hardware or M-codes requirements just yet. If you're interested Im happy to test on both machines.
Thanks Wayne
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terjeio
commented on June 25, 2024
Do you know of anybody who have switched to OpenPNP for these?
Is there only one control board in the machine?
I would guess there has to be a ton of I/O lines for all those feeders etc. No way you will be able to replace that with a Teensy unless there is an I/O board that can be controlled via I2C, SPI or some other protocol.
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Wayne2580
commented on June 25, 2024
There are several well documented conversions, Retrofitting a Charmhigh
CHM-T36VA Machine with OpenPnP | MCU on Eclipse
<https://mcuoneclipse.com/2020/05/03/retrofitting-a-charmhigh-chm-t36va-machine-with-openpnp/>
There is only one control board.
IO line quantity is similar to that of an4 axis cnc machine. The feeders
are not electric, the machine uses a drag pin mounted to the head to pull
part reels in place or use of IC trays.
…On Tue, Dec 14, 2021 at 7:22 AM Terje Io ***@***.***> wrote:
Do you know of anybody who have switched to OpenPNP for these?
Is there only one control board in the machine?
I would guess there has to be a ton of I/O lines for all those feeders
etc. No way you will be able to replace that with a Teensy unless there is
an I/O board that can be controlled via I2C, SPI or some other protocol.
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terjeio
commented on June 25, 2024
Good, after getting Smoothie to run you could then try with the grblHAL STM32F4xx driver before moving on to the Teensy.
Do you know how many analog inputs and outputs are required?
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Wayne2580
commented on June 25, 2024
Understood, a good idea.
Good question. From what Ive gathered the machine does have feedback for
the pull pin (inductive solenoid) and vacuum which I would assume would be
analog. The machine motors have encoders, but not sure if they are actually
used. Obviously there's the binary limit switches. Once I dig the pcb out
Ill ohm out the in/outputs.
…On Tue, Dec 14, 2021 at 9:45 PM Terje Io ***@***.***> wrote:
Good, after getting Smoothie to run you could then try with the grblHAL
STM32F4xx <https://github.com/grblHAL/STM32F4xx> driver before moving on
to the Teensy.
Do you know how many analog inputs and outputs are required?
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