Remora - ethernet NVEM / EC300 / EC500 cnc board

I made a video of the EC300 PCB. Not sure if EC500 and EC300 share the same processor. 



 

So it's nearly 1 year to the day when this topic was started for the STM32 based NVEM. And today I can happily share that the RT1052 version of Remora is 99.9% complete with the NVMPG now operational!

github.com/scottalford75/Remora-RT1052/tree/dev

The code will work for the NVEM and EC300. It should work for the EC500 but not tested and it won't have all the IO available until I can get a board test.

Currently MCUXpresso IDE and a CMSIS-DAP adaptor is required to compile and flash the firmware to the board. I'll start to work on DAP-LINK code to hopefully get drag and drop flashing working. This should make things easier if I can get it to work.

I'll merge dev into main as a 0.0 release.

Don't forget that your other Remora thread goes back even further to April 2021. Each thread having over 80K views (jan '23)
www.forum.linuxcnc.org/18-computer/42276...ller-via-spi?start=0

Hi,

sorry to bother you all, but I'm trying to set up remora on my NVEM V2. I was able to flash the firmware and upload the config file. LinuxCNC seems to be able to talk to the board (there is a lot of network traffic between the two); however, I'm having troubles with the inputs (I'm trying the e-stop, but it's the same with the others): when I flip the e-stop button the state of the input pin changes (the voltage drops to 0V as I'm using an NC button) but remora does not "see" it, the input pin in the HAL configuration stays low in any case.

Do you have any suggestions of what could be causing this? May I have flashed the wrong firmware/incorrectly?

I have to say I haven't tried sending some gcode yet, I wanted to have the safeties active before anything else.

Best regards,
Alberto M.
 

I tried sending some gcode and I got an immediate error about joint 2.

Could it be the 12v power supply is not good enough? On the external cover of the NVEM card the input voltage range is 12v-32v, but on the board itself it says 18v minimum and I was wondering if that could be the issue.

Best Regards,
Alberto M.

Hi,

sorry to bother you all, but I'm trying to set up remora on my NVEM V2. I was able to flash the firmware and upload the config file. LinuxCNC seems to be able to talk to the board (there is a lot of network traffic between the two); however, I'm having troubles with the inputs (I'm trying the e-stop, but it's the same with the others): when I flip the e-stop button the state of the input pin changes (the voltage drops to 0V as I'm using an NC button) but remora does not "see" it, the input pin in the HAL configuration stays low in any case.

Do you have any suggestions of what could be causing this? May I have flashed the wrong firmware/incorrectly?

I have to say I haven't tried sending some gcode yet, I wanted to have the safeties active before anything else.

Best regards,
Alberto M.

Hi Alberto, 

Sounds to me that the config file is not loading correctly. Can you share your config.txt file here? If the config file is not correct JSON format it will not load. The only way to know this is to have the serial connection to see the output from the controller. I normally check the config.txt with an online JSON checker to ensure no formatting errors.