Need help in choosing controller board from small honby cnc.

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01 May 2024 05:21 #299440 by amanker
I want to use 3d printer board for CNC. Because I want to use stepticks for motors and its compact. I have read that remora works on stm32f4 based boards. 
ARe these boards suitable for hobby grade 5 axis machines? Remora don't support tmc5160 which i want to use. So no option left for me except using 8825 driver.
What will be difference if i use stm32f4 via spi or if i use w5500 via spi-ethernet. I have choosen mks octopus pro stm32f429 board. Is it good enough.
Or i can use my existing MKS Tinybee board with w5500 spi-ethernet interface? I have seen someone using esp32 with w5500. But in Tinybee stepper signals are derived from i2s bus. Not directly from gpio pins.
I think I have too many questions. I help will be appreciated.

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01 May 2024 16:41 #299474 by cakeslob
Hey, we usually hang out in this thread

www.forum.linuxcnc.org/18-computer/42276...ller-via-spi?start=0

You can use the TMC5160, but they cant be configured via SPI. you can also use uart tmc2208/9 drivers

The octopus f429 is a good board, and it will run fine.
The difference between rpi-spi and w5500 versions, RPI-SPI version has more support/features. In my opinion, these boards are perfectly fine for anything using stepsticks.
But I have not yet completed the supporting firmware for the f429 on w5500 ethernet.

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01 May 2024 17:40 #299480 by amanker
Thanks for reply.
I have already ordered MKS OCTOPUS pro 429 version. With w5500 spi-ethernet and 8266 wifi adapter. I will be using drv8825 until there is support for tmc5160. I have read that I can use 5160 in standalone mode, for which I have to manually jumper some pads, but it will be unsafe for low current small motors. So till time I will stay with 8825 stepsticks.
IS stm32f429 board is good enough for 5 axis hobby grade machine? 
Should I try ethernet option or go straight to spi version?
​​​​

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01 May 2024 17:44 #299481 by amanker
Is there any plans to support esp32 boards? Seen some videos with esp32 and w5500. I have MKS Tinybee board already running FluidNC. If i can use it with w5500? But my board don't have gpio pins directly connected to stepper driver. They are connected through i2c.

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02 May 2024 14:41 #299557 by cakeslob
The octopus 429 will be good.
I would use the spi version, it has the best support. The ethernet version is not released yet for the 429.

As for an esp version, I could not comment. that is a separate project from remora.

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02 May 2024 14:46 #299560 by amanker
I didn't know that ethernet will not work in 429 board. I thought it has 1mb flash so it will be good than 446. 429 is a little bit costlier and hard to find. 446 and 7xx is easier to find. Anyway i placed order for 429 and w5500. Hope spi will be good enough for me. 

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02 May 2024 17:36 #299574 by tommylight
Just putting it out there, Octopus has no ethernet, it has an RJ11 connector (6 pins), not an RJ45 (8 pins).

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02 May 2024 18:26 #299583 by amanker
I know it has RJ11 connector, I was asking about using w5500 based spi-ethernet interface. For connecting octopus pro via ethernet. 
The following user(s) said Thank You: tommylight

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02 May 2024 23:38 #299600 by cakeslob
not that it wont work, i just havent focused enough time on other boards yet. the ethernet firmware is still rather new

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03 May 2024 04:44 #299607 by amanker
Then on which board, it will work? I should have ordered 446 board?

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