PEEP is also very unpleasant and thats the main reason while the patients that need it are sedated. I never used it on animals in my career yet. I learned about it at university, which is quite a while ago
The sound of motor.
Thank you Jeff!!
You guys may be able to get some good information in this facebook group:
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After 15 minutes running the motor it is getting hot, any reason why?
The heat is determined by the current (not the movement). The current is set by the little potentiometer on the driver.
Here is a video on some basics for setting the current limit:
Looks like youāve made some great progress.
Now i realize I took drv8825 from MPCNC setup but i am using a different motor for the AUTOAMBUā¦
Yep. There are a couple University professors here working on an external iron lung type device made out of a shop vac and a home depot bucket that could be used on patients without sedation:
changing motorā¦
the UNO usb must be connected to pc all time for the motor to work?!
Yes, it will not run on its own.
By design? Why will it need a computer changing timing as watched by running computer
that is really unexpected, i thought the UNO is a micro PC which can be run independently, lack of knowledgeā¦is there any other option to bypass it?
Once the UNO is programmed, a PC is not necessary. You will need an appropriate power supply of course, but there is no need for anything to plugged into the USB port.
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great news!!!
I am using 12v 1.5A , what do you recommend?
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Depends on how high you adjust the driver to but that sould be plenty to run 1 or 2 nema 17s
I tried again, same problem, Maybe there is something wrong with the wiring?
0.9V on the Dvr8825
Sorry, I misunderstood your question.
no problem , my communication issues 
What is the problem? Does the UNO not run without a computer connected?
exactly