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Attis92
Attis92

28 Apr 2025 17:05

Replied by Attis92 on topic Remora - ethernet NVEM / EC300 / EC500 cnc board

Remora - ethernet NVEM / EC300 / EC500 cnc board

Category: Computers and Hardware

Hello,

I'm trying to set up an EC500 board with Remora firmware, but I'm encountering an issue.
I successfully flashed the latest BIN file to the MCU (using DAPLink, PyOCD, etc.).
Then, I tried to upload the DMA-based stepgen configuration (

ec500-rt1052-DMA.txt

), but Remora reports:

JSON Config file CRC incorrect

My Python version is 3.11.2

Here is the upload log:

Valid JSON config file, uploading to NVEM board
Config file length (words) = 2171
Config file length (bytes) = 8681
Remainder = 1
Padding added =  [0, 0, 0]
Config file length with padding (bytes) = 8684
CRC-32 = 0x28a8b96b

And this is the serial port response:

Receiving new configuration. Stopping threads..
    timer stop
    timer stop


Checking new configuration file
mod = 1, padding = 3
Length (words) = 2171
JSON length (bytes) = 8681
crc32 = c17ec40f
JSON Config file CRC incorrect

Has anyone encountered this issue before?
What am I doing wrong?Thanks in advance!

DarkPhoinix
DarkPhoinix

28 Apr 2025 17:04

Replied by DarkPhoinix on topic [SOLVED]linuxcnc Latency test ambiguous results

[SOLVED]linuxcnc Latency test ambiguous results

Category: General LinuxCNC Questions

PCW wrote:
What was the result of the ping command?

You need result of all 40000000?

PCW

28 Apr 2025 16:56 - 28 Apr 2025 22:22

Replied by PCW on topic spindle with encoder

spindle with encoder

Category: Basic Configuration

Typically you just have one track of holes and the B detector offset from the A detector by
hole_pitch*(N+1/4). That is, if the holes were 2 mm apart, the A/B detectors would be
spaced .50 MM or 2.50 mm or 4.50 mm etc.

This 1/4 pitch offset gives you the desired 90 degree phase difference between A and B.
Note the when drilling holes you should aim for a 50% duty cycle waveform
on A and B. This may require some experimentation and changing the sensors
radial positions.