At 07:42 PM 7/25/01 -0700, you wrote: > Rodrigo, the LM35 outputs 10mV/deg C where 0 deg C = 0mV, -1 deg = -10mV, >+1 deg = +10mV, etc. So 667mV = 66.7 deg C. It really sounds like Nick is >using an LM34 which would give 66.7 deg F... Sounds like he may have connected a resistor (or had leakage or bias current) from the output to Vcc, which may have overwhelmed the internal resistors (it's a common-emitter output, so it can only source significant current, not sink it). Even a couple of dozen microamps could do that- it would cause the temperature vs. voltage curve to plateau at some value, and the exact temperature at which it stopped working properly would be quite variable from unit to unit because of the wide variation in IC resistor values. Best regards, =-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-= Spehro Pefhany --"it's the network..." "The Journey is the reward" speff@interlog.com Info for manufacturers: http://www.trexon.com Embedded software/hardware/analog Info for designers: http://www.speff.com Contributions invited->The AVR-gcc FAQ is at: http://www.bluecollarlinux.com =-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-= -- http://www.piclist.com hint: To leave the PICList mailto:piclist-unsubscribe-request@mitvma.mit.edu