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Topic: HX711 response times. (Read 158 times) previous topic - next topic

Fulliautomatix

Hi, I'm playing with one of these...https://www.sparkfun.com/products/13879
Using this library....
https://github.com/aguegu/ardulibs/blob/master/hx711/hx711.cpp

The getValue() process starts by waiting for the data output pin to be pulled low (line 45 in the library I've linked to). Experimentation indicates that this takes 80-90ms, which limits the number of samples to around 10 per second, is this fixed? or can I speed up this process? I can't find any mention of this in the datasheet (perhaps I should be more honest and just say I can't understand the datasheet!)

The datasheet for the ADC is listed here...https://cdn.sparkfun.com/datasheets/Sensors/ForceFlex/hx711_english.pdf

DaveEvans

Would knowing that "SPS" means "samples per second" help you read the sparkfun product page or the datasheet?  What about that jumper on the back of the board labeled "RATE"?

Fulliautomatix

Quote
Would knowing that "SPS" means "samples per second" help you read the sparkfun product page or the datasheet?  What about that jumper on the back of the board labeled "RATE"?
Thank you!

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