How do you measure negative voltage with the 8bit A/D Converter?
jsmasterking
Posts: 35
The 8bit converter that parallax sells/includes in their kits have an input range of 0-5V. I been wondering how to measure both positive and negative voltage with this little chip. For example -2.5 to +2.5 volts.
Is there a way to offset the voltage to get to a 0-5V range? I been searching on the net for at least 2+ hrs and haven't got any clue to how to do this. Please Help!
Also what is the purpose of the Vref pin?
▔▔▔▔▔▔▔▔▔▔▔▔▔▔▔▔▔▔▔▔▔▔▔▔
·on····· plane··········································, when catching ducks
"In this house, we obey the laws of thermodynamics!"
··············································································^
http://profiles.yahoo.com/jsmasterking
Is there a way to offset the voltage to get to a 0-5V range? I been searching on the net for at least 2+ hrs and haven't got any clue to how to do this. Please Help!
Also what is the purpose of the Vref pin?
▔▔▔▔▔▔▔▔▔▔▔▔▔▔▔▔▔▔▔▔▔▔▔▔
·on····· plane··········································, when catching ducks
"In this house, we obey the laws of thermodynamics!"
··············································································^
http://profiles.yahoo.com/jsmasterking
Comments
▔▔▔▔▔▔▔▔▔▔▔▔▔▔▔▔▔▔▔▔▔▔▔▔
--DFaust