fit-PC Users Forum

GPIO Timing accuracy
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Author:  Dinosaur [ Wed Feb 24, 2016 7:28 pm ]
Post subject:  GPIO Timing accuracy

Hi All

If I go through all the trouble of using GPIO and interfacing it to a Solid State Relay,
what would be the output pin timing accuracy.

For example, I need to drive a pneumatic solenoid that has to be ON for 300 mSec.(operator adjustable)
Using usb I am getting 3 or 4 mSec variation, with an occasional 11 mSec variation.

The 11 mSec variation is the problem.

Author:  mbirger [ Sun Feb 28, 2016 12:07 pm ]
Post subject:  Re: GPIO Timing accuracy

Using fitlet GPIO cable you interface the GPIO HW directly with very simple and not memory-consuming drivers, what keeps the time delays to really minimum values, and the operation is real time.

Author:  Dinosaur [ Sun Feb 28, 2016 6:05 pm ]
Post subject:  Re: GPIO Timing accuracy

Hi All

Thank you for the reply mbirger, one final point:
Where do I find what the maximum load in milliamps is for those outputs ?

Author:  hassellbear [ Mon Feb 29, 2016 4:05 pm ]
Post subject:  Re: GPIO Timing accuracy

This may answer your question - it is a bit "buried" in the wiki. ... pabilities

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