Tell me more ×
Electrical Engineering Stack Exchange is a question and answer site for electronics and electrical engineering professionals, students, and enthusiasts. It's 100% free, no registration required.
up vote 0 down vote favorite

I'm buying this Xbee chip.

But it only has 6 ADC pins and I have 12 sensors! Can I multiplex my 12 inputs? How hard is it to do this? I don't want to have to use 2 Xbee modules for power/cost reasons.

share|improve this question

1 Answer

up vote 4 down vote accepted

You can use a CD4051 8-to-1 analog multiplexer and connect it to one of your analog channels, which will give you a total of 13 channels. You'll need 3 digital outputs to select the active channel on the multiplexer.

share|improve this answer
Very useful. Many thanks. I'll look up the CD4051. – Eamorr May 31 '12 at 19:20
thanks very useful chip ? CD4051. How much it cost over there? – sandun dhammika May 31 '12 at 20:49
@sandundhammika, You can answer questions like that at findchips.com. – The Photon May 31 '12 at 23:19

Your Answer

 
discard

By posting your answer, you agree to the privacy policy and terms of service.

Not the answer you're looking for? Browse other questions tagged or ask your own question.