Good morning, I have a problem with TelosB ADC input.
I need reading four different values on ADC input. So I use a selector that switches over a voltage divider powered by the Analog VCC (pin 1 of the 10-pin expansion connector) and closed over the Analog Ground (pin 9 of the 10-pin expansion connector). The output of the selector represent the ADC’s input. I know that the input impedance of ADC is 1 MΩ. I use 1 KΩ resistors to make the divider, but I find the ADC input voltage is always about 0 Volt, as if it is grounded. Can someone tell me why it doesn’t work correctly? Where do I make mistake? I am at your disposal for further clarifications. Thank you very much for your attention. ---------------------------------------------------------------- Nicolò Petta Infomobility Technologies Department Strada Torino 50, 10043 Orbassano (TO), Italy Phone:+39 0119080530 Fax:+39 0119083083 e-mail: [email protected] <mailto:[email protected]> web site: www.crf.it <http://www.crf.it> ---------------------------------------------------------------- ----------Internet E-Mail confidentiality footer------------------------------------------------- The information transmitted in this e-mail message is intended only for the person or entity to which it is addressed and may contain confidential information.Any retransmission, dissemination or other use of, or taking of any action in reliance upon, this information by person or entity other than the intended recipient, if not clearly authorized by the sender, is prohibited.If you have received this communication in error, please notify the sender immediately by e-mail and delete the message from any computer.
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