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AD Converter PCF8591 for Raspberry Pi: Difference between revisions
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AD Converter PCF8591 for Raspberry Pi (view source)
Revision as of 12:58, 24 January 2019
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Please use [http://www.daycounter.com/Calculators/Voltage-Divider-Calculator.phtml Voltage Divider Calculator] to get values of resistors you need. I strongly recommend you to replace one resistor with trimmer resistor to calibrate it to right value. | Please use [http://www.daycounter.com/Calculators/Voltage-Divider-Calculator.phtml Voltage Divider Calculator] to get values of resistors you need. I strongly recommend you to replace one resistor with trimmer resistor to calibrate it to right value. | ||
For measuring voltage the best is to use [https://github.com/quick2wire/quick2wire-python-api quick2wire] api library combined it with my prepared example [https://github.com/koss822/misc/blob/master/ad_pcf8591/pcf8591read github.com/ko.../ad_pcf8591/pcf8591read] file pcf8591read which has these options: | For measuring voltage the best is to use [https://github.com/quick2wire/quick2wire-python-api quick2wire] api library combined it with my prepared example [https://github.com/koss822/misc/blob/master/RaspberryPi/ad_pcf8591/pcf8591read github.com/ko.../ad_pcf8591/pcf8591read] file pcf8591read which has these options: | ||
<syntaxhighlight lang="python"> | <syntaxhighlight lang="python"> | ||