Remora - ethernet NVEM cnc board

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17 Jul 2023 04:12 #275612 by tuxcnc

Which encoder

With real encoder you can't do detailed test, because counts and resets not meant work well.
You need a knowledge how many and how long pulses you sent to controller, for compare to HAL pins values.
You need a smart signal generator or DIY encoder hardware emulator (like as I described above).
You can make that device from any microcontroller, ULN2003 driver and eventually L7805 voltage regulator, nothing difficult.
If you want to have real encoder, you must buy a set (for example 100, 500, 2500 ppr) because index slot usually has width as phase's slots, and you can't change these.
The Omron E6B2 series encoders is a good choice, ( www.aliexpress.com/item/1005003655783846.html , this it is a first found, I don't know this seller).

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17 Jul 2023 04:39 #275617 by tuxcnc

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17 Jul 2023 06:48 #275626 by rbobey1989
       

hello Scott, I imagined for that moment that pressing the button that the EC300 has could solve the problem, but at least not for me, if you have some special sequence or some specific moment to press the button and you can guide me, I would be very happy to revive my EC300.
I attach a photo of the encoder that I have, regards
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18 Jul 2023 21:10 #275766 by Murphy
Are these boards able to output PDM aswell?

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18 Jul 2023 21:36 #275768 by scotta
Hi, no software PWM or PDM (sigma delta) currently. But there are Remora modules that could be added if needed. What's the application?

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18 Jul 2023 21:42 - 18 Jul 2023 21:46 #275770 by Murphy
It's an emco vfd with a 3 phase motor.  I'm in two minds to just buy a cheap Chinese vfd with 0-10v. It has step and dir differential inputs, I have a little circuit to do this. It requires PDM rather than PWM
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Last edit: 18 Jul 2023 21:46 by Murphy.

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18 Jul 2023 21:51 #275771 by scotta
I'm away from the workshop for a while. Will look to include the software PWM and PDM modules.
The following user(s) said Thank You: Murphy

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19 Jul 2023 16:01 - 19 Jul 2023 20:33 #275825 by raf1110

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Hi in above configuration I have problem with connecting to device via DAPlink or rs232 usb adaptor to see if there is data connection to board.
Following steps I got to point where I should compile firmware but software that you using have broken download page I have little knowledge on ARM.

Is there easy way with DAP link to flash bin file for cnc linuxcnc machine. I have studied this topic and now got stuck. I can provide more info if necessary.

It is amazing what you do and if anyone could guide me a little how to flash correct firmware on NVEM v5
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Last edit: 19 Jul 2023 20:33 by raf1110.

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20 Jul 2023 00:56 #275842 by scotta
Hi, it's best to use the CMSIS-DAP firmware for the ST-Link. The DAPlink has not been reliable for people.

github.com/scottalford75/Remora-RT1052/b...SIS-DAP-STLINK21.hex

Use pyOCD to flash the firmware.

pyocd remora-rt1052-1.1.0.bin --target mimxrt1050_quadspi

Latest firmware:

github.com/scottalford75/Remora-RT1052-c...ora-rt1052-1.1.0.bin

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20 Jul 2023 21:13 #275915 by scotta

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Hi in above configuration I have problem with connecting to device via DAPlink or rs232 usb adaptor to see if there is data connection to board.
Following steps I got to point where I should compile firmware but software that you using have broken download page I have little knowledge on ARM.

Is there easy way with DAP link to flash bin file for cnc linuxcnc machine. I have studied this topic and now got stuck. I can provide more info if necessary.

It is amazing what you do and if anyone could guide me a little how to flash correct firmware on NVEM v5

Hi, just looking at your photos again. Is this the actual setup used when trying to flash the firmware? You also need to power the board during the flashing process. In the photo you have no power supply connected...

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