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vnh20sp30
#1
I added support for this driver but, out of the 3 I have ordered:
  • Reverse half speed with a lot of heat.
  • No reverse
  • Both directions work perfect, but no current sense output.
So all three defective.  I am not very interested in this part anymore unfortunately.  Would have been a nice solution to reduce the needed solder connections.   It does make a lot of heat at 20khz ultrasound frequencies so must be run slower but maybe it it defective in this way too.

If anyone has fully working parts let us hear about it and where they were obtained.  I have no doubt good versions of this part will work.
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#2
i'll give it ago this weekend fingers crossed
whats the pinout? is there another ino. for it ?

"This product can get hot enough to burn you long before the chip overheats. Take care when handling this product and other components connected to it."
mare liberum
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#3
i put heatsink on the chip and epoxied a thermistor to it and dug up a few motors.
can you elaborate on the support for this driver. i looked on github and didn't see anything there.

thank you
jim
mare liberum
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#4
I put some commits in git, check now, motor.ino Should specify the pins in the comment, and you will need to uncomment the appropriate #define VNH20SP30 Let me know if you have success. I had 3 out of 3 bad parts.

The one that did drive without having working current sense does not heat up at all with a load of 1-2 amps.
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#5
i had trouble compiling, long story short.
i created a new tab in the ide named crc.h and copied the code for it there and deleted the ../ on the line 208 to look like this #include "crc.h"
then it compiled uploaded..
i don't feel like soldering right now.. so ill get back to it later and report..
mare liberum
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#6
hmm... sorry it is my fault. I don't use the ide at all, but the Makefile. I need to add a -I. to the cflags and remove the ../ Thanks for letting me know.

I don't think you need to solder if you use jumper cables, unless you didn't put a header on the part yet. Anyway let me know if it works, and if the current sense works.
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#7
no header pins, i am going to use some rj45 cable.
i have a doctors appointment today..i'll try to get it done this evening.
mare liberum
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#8
i got it wired up this weekend and i get no motor movement at all.i will try a test script and double check my wiring and report back..it could be a power problem as well i was using a computer power supply .
mare liberum
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