Remora - ethernet NVEM / EC300 / EC500 cnc board

DMA stream works in circular mode. And yea, for each channel we must have a buffer of states for the GPIO BSRR register.

About inaccurate values of frequency.. It's all about timer's prescaler (16bit) and period (16bit) limits. Inaccurate duty cycle values - it's DMA bus latency related issue.

The number of Ethernet controllers supported by Remora firmware is increasing  . The Digital Dream EC500 is now 99% working with just the NVMPG and spindle analogue to resolve.

The owner of the board below will start testing soon. This board I hope (fingers crossed) will have the spindle analogue working as it uses the same components as the NVEM v3 I have. The EC500 board that I received looks to be an older version using a op amp for the analogue out.

 
 
With the number of boards increasing I'm proposing to change both the repo and the naming of the LinuxCNC component.

Propose to change / new repo to Remora-Novusun and have sub directories for the NVEM and EC500 etc.

The LinuxCNC Ethernet component to change to Remora-nv

Would this cause to many issues for people?
 

Naming is the biggest problem of programming

A short video on the EC500.

Hi Scot, EC500 will have better frequency more than 40khz ?

The default is 40khz but in the config and LinuxCNC loadrt command it is possible to increase the base thread frequency. Capped at 120khz at the moment.

MX_master's posts has got me working on a DMA step generator which should get the step rate significantly higher, I hope.

This is great work. Currently doing a Denford mill retrofit with parallel cards. I also have an emco little CNC waiting to get converted. Is it possible to get these to work with encoder inputs? Ie a toolchanger?.

Murphy wrote:

This is great work. Currently doing a Denford mill retrofit with parallel cards. I also have an emco little CNC waiting to get converted. Is it possible to get these to work with encoder inputs? Ie a toolchanger?.

For 3D printer controllers, Remora has encoder support. Both in software and QEI for high speed. This is a feature that could be added to the NVEM and EC500 versions.

If this feature and a higher step rate could be achieved it would be fantastic. Iv just ordered one for about 90 euro from China to have a play around with.

Middle speed counting is possible for the NVEM. High speed counting - is not.