DOH You make a good point...I thought that the GPIO were configurable between analog and digital.
as ADC I've found this: not sure if it is right for me thou. I need these sensors to shoot data concurrently, while I think this board, allow only one signal at time, unless you switch input https://www.sparkfun.com/products/9056 On Wednesday, February 12, 2014 5:14:42 PM UTC-8, liyaoshi wrote: > > Maybe you need more ADC chips . > I dont know how to use gpio as as analog reading , As I understand , GPIO > only get 2 level input 1 or 0 , and if your analog signal over 2 levels > ,how to measure ? > Another idea is > use TDM switcher , maybe you can find some chip can do switch several ADC > input and 1 or more digital output . I dont know if there is this kind of > chip ,maybe > > > 2014-02-13 9:00 GMT+08:00 Karl Longen <[email protected] <javascript:>> > : > >> Was wondering how many of the GPIO I can use for analog reading. I have >> many sensors that output only in analog; so I was wondering if that may >> work, since the BBB has only 7 Analog IO, while the rest are all digital. >> >> If I can't plug more than 7 analog IO, how could I plug in more? Thanks. >> >> -- >> For more options, visit http://beagleboard.org/discuss >> --- >> You received this message because you are subscribed to the Google Groups >> "BeagleBoard" group. >> To unsubscribe from this group and stop receiving emails from it, send an >> email to [email protected] <javascript:>. >> For more options, visit https://groups.google.com/groups/opt_out. >> > > -- For more options, visit http://beagleboard.org/discuss --- You received this message because you are subscribed to the Google Groups "BeagleBoard" group. To unsubscribe from this group and stop receiving emails from it, send an email to [email protected]. For more options, visit https://groups.google.com/groups/opt_out.
