Remora - Rpi Software Stepping Using External Microcontroller via SPI

Anyone recognise this board? It has SD card and Ethernet.

 

everyone keeps talking about encoder inputs.. Are we talking real servos with feedback or software one that looks at the output pulses to verify output? I have 5 CNC machines and only one has encoders, am I missing something? i think most diy are openloop other the spindle.

Thanks

I think most people do use open loop.
But as I have been upgrading I have added encoders to all axis.
I love the ability to have a encoder on my spindle for rigid taping. I might only do it a bit but it's great to have.

 
Hi there

I see this project is targeted mostly at printers is there a reason why I couldn't be using it with a Black Pill + Chinese BOB? If so what would I need to do to achieve this? I'm surprised this Idea is not more popular looking at the other MCU Projects (Arduino, Teensy, ESP32..)

Sorry I have not setup any linuxcnc ever so its a bit hard for me to asses even though I can read code.

Thanks a lot!
Alessandro

EDIT: Sorry I realised the last few pages were actually about this topic: is there a working project with this or people using SKRs with external drivers?
 

I am using mine on a CNC mill.
I use external stepper motor drivers.
I also have a board that converts pwm into true 0-10v spindle control.
You just need a rpi4 and one of the supported 3d printer main boards

Cncninja wrote:

everyone keeps talking about encoder inputs.. Are we talking real servos with feedback or software one that looks at the output pulses to verify output? I

I'm talking about real AC or DC servos or closed loop steppers with hardware encoders that read actual machine position or motor shaft position back to a PID. Not just a stepgen that double checks its Step count. Encoders are very low cost now compared to a decade or two ago.