raspibotics
commented
3 years ago Hi Niko,
I had issues at first with getting my steppers to cooperate. I would suggest testing some seperate example code to see if you can get any sort of movement out. Are you absolutely sure that you've wired the correct stepper coils to the stepper drivers? I know when I did the guide I was following had some inaccuracies so I had to use trial and error as well as measuring the resistance to determine which order the coils should be connected. If they are connected wrong the stepper will move unexpectedly or lock up but when working correctly should activate when the accelerometer reads the critical value.
There shouldn't be too many differences with board pinnout and I'm afraid I can't help diagnose too many software issues with the original YABR code as I left it mostly unchanged and did most of the software on the raspberry pi. Although the original author goes through the code in great detail in these two videos if you rule out hardware.
Hope this helps,
Harry
On Fri, 19 Mar 2021, 16:39 niko-kl, @.***> wrote:
Hey there, I'm having some issues getting the YABR code working. I've got the same hardware as mentioned in your project. An Arduino Uno (SMD version, should not differ, as far as I researched) and CNC Shield. It seems the code fails on following line: TIMSK2 |= (1 << OCIE2A); The result of running the YABR code are two non functional stepper motors. One of them can be moved by hand, the other one being blocked at a position. Both are producing some noise. I checked the current limit on the driver and used other motor drivers. Unfortunately without success.
I tried to increase OCR2A = 39; to 3999999 which should result in a timer interrupt every 2 seconds instead the 20 µs, but looking into serial output the timer would still spam the code, way faster than 2 seconds. I replaced the Arduino with another one (different brand, same processor, not SMD). Same behavior there. I replaced the writing to PORTD with digitalWrite() but had no luck either.
Could it be possible that I'm missing out on some point not mentioned in the guide?
Greetings, Niko
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ghost
Hey there, I'm having some issues getting the YABR code working. I've got the same hardware as mentioned in your project. An Arduino Uno (SMD version, should not differ, as far as I researched) and CNC Shield. It seems the code fails on following line:
TIMSK2 |= (1 << OCIE2A);The result of running the YABR code are two non functional stepper motors. One of them can be moved by hand, the other one being blocked at a position. Both are producing some noise. I checked the current limit on the driver and used other motor drivers. Unfortunately without success.I tried to increase
OCR2A = 39;to3999999which should result in a timer interrupt every 2 seconds instead the 20 µs, but looking into serial output the timer would still spam the code, way faster than 2 seconds. I replaced the Arduino with another one (different brand, same processor, not SMD). Same behavior there. I replaced the writing toPORTDwithdigitalWrite()but had no luck either.Could it be possible that I'm missing out on some point not mentioned in the guide?
Greetings, Niko