开云体育

Sounds like you got a good machine.? I'm guessing your experience will go better than mine.? I tried this with a budget CNC a year ago.? After a bit of a learning curve and some small successes, I

Looking back at my notes, I see I misspoke: With a long display cable, the v12 code hangs while trying to start the RA8875 object in the setup routine.

------------------------------------------------------------------------------------------------ I don't have anything useful to add other than that looks like a fantastic machine and I want to hear

Different communication bus. I2C vs. SPI. Dr. William J. Schmidt - K9HZ J68HZ 8P6HK ZF2HZ PJ4/K9HZ VP5/K9HZ PJ2/K9HZ VP2EHZ Owner - Operator Big Signal Ranch – K9ZC Staunton, Illinois Owner –

“No one complained about display issues that I can recall.” You might review the posts from fall two years ago to refresh your memory when Al with a group of others was working on ways to calm the

I've tested this.? The T41 doesn't get to the setup routine when a long display cable is used.? It gets stuck trying to create the RA8875 object.

I'm just wondering if the current design gets all it can from the default driver setting.? My tests show that crosstalk is a problem on the display cable and that modifying the SPI signal order on it

... and the receiver doesn't come on like it does if there's no display cable installed ...

I just made a 20' cable. It works fine for the front panel buttons, but when I install it for the display the screen doesn't come on. Is that useful information, or did everyone expect that?

Hi Terrance- The original V11 Main board design uses a driver IC for the SPI bus which drives the display.? Same for the original kits.? No one complained about display issues that I can recall.

Routing has already been optimized… with the 4-layer board. Dr. William J. Schmidt - K9HZ J68HZ 8P6HK ZF2HZ PJ4/K9HZ VP5/K9HZ PJ2/K9HZ VP2EHZ Owner - Operator Big Signal Ranch – K9ZC Staunton,

Plugs DIRECTLY into the display connector on the MAIN board and sits OVER the MAIN BOARD like the picture below: Dr. William J. Schmidt - K9HZ J68HZ 8P6HK ZF2HZ PJ4/K9HZ VP5/K9HZ PJ2/K9HZ VP2EHZ Owner

I'll try mine out with a very long cable as well. Regarding future Main board designs, has routing the SPI traces to minimize crosstalk been considered?

In your case, try out a LONG cable… say 3 feet and see if that works. If it does, I’ll start mass-producing them… and possibly get Oliver to place the circuitry on a V12.7 main board for future

Bill, My system is working and without freeze-ups, but I will try out your board. Al

I believe that this is the "correct" solution.

I have both M and C parts, but it doesn’t seem to make a difference. If there is a software fix for this, I really wonder why someone hasn’t done it. There are posts all over the PRJC site about

I hope you got the M version.? The C version is only specified to 25 MHz. Also, remember there is a potential software solution to boost the Teensy drivers. That will require drilling into the device

I use these ferrite sleeves for ribbon cables. Seems to work FB. Tim W4YN

Another wacky, but successful solution is to hand wire the display with the SPI signals separated by the ground/power lines.? I used the following order successfully on an 8.5" cable: 1. SCLK (gray)