Remora - ethernet NVEM / EC300 / EC500 cnc board

I've taken copies from two NVEM v2 (v3 on the board) but I've had no success in reflashing the original firmware and having Mach 3 connect. Happy to share if you'd like to have a go.

sure, kind of stuck with a brick.

hello, will it work with the 3axis card?

I'm interested in the firmware if you can upload it.

Can I get a copy of the Version2 firmware backup?

what where you RS232 settings. My device is in a reboot loop.

Here you go for the V3 firmware.

Hi all,
I am experimenting with the NVEM board and the Remora Ethernet component.
My test setup includes the stock firmware from Github and the LInuxCNC component also from Github.
LinuxCNC is running on a Raspberry Pi 4.

My only modification is that I increased the joint SCALE to ~1000.

With the setup described above, I always receive a joint follow error above speeds of 3000mm/min.
When starting a movement, the joint follow error gets bigger and bigger until reaching the defined threshold in the ini file.
Then throws the error.

My idea is that the NVEM board cannot produce steps that fast.
According to my calculations 3000mm/min => 50mm/s => 50000 pulse/s => 50kHz would be possible on this board.

Can anyone confirm please my assumptions?

Hi, the default max step rate is equivalent to the base thread frequency of 40kHz.

Remora-NVEM has the same feature as the original which allows the base thread frequency to be changed. I have not tested this, but it should work. But it will have an upper limit and is limited in code to 120kHz at the moment.

forum.linuxcnc.org/18-computer/43988-rem...ting?start=30#224743

And of course you would match your hal file to same frequency:

loadrt remora-eth PRU_base_freq=80000

Cool thanks for the upload, got mach3 working again. If my NVEM is 3 axis in Mach3 will 6 axis work in Linux CNC. Not sure why my NVEM says 3 axis in Mach3 but the sticker says 6 axis. I'm trying to figure out how novusun license there axis count. Is it firmware or some kind of unsoldered trace?