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ARTY Z7-20 board I/O output level


karimia

Question

Hi, 

I use a ARTY board to control Motor servoamp.

 

Generates a PWM signal and sends it to the I / O port.

 

When no load is applied, the output voltage swings from 0 to 3.3V.

However, when the amp and port are connected, the voltage changes to 1 ~ 2V.

Anyone know what the problem is?

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@karimia,

It's hard to provide an answer with so little information, though I suspect that you can figure this one out on your own.

  • What pins on the Arty-Z7 are you using for the interface?
  • What servo amplifier are you using?
  • Where are you probing?
  • Where is your ground reference point?
  • What IOSTANDARD are you using for the FPGA output pins?
  • What IO current have you set for those output pins?
  • What is the problem (with the servo)?
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