Moof
Full Member level 2
![Full Member level 2](/styles/images/ranks/elevel2.gif)
Dear Friends:
i need to connect a temperature sensor to a pic, but i have some problems:
1- it is a battery project so i need to consider how much current i "spend" feeding the sensor and the signal condicioning.
2- need 0.5ºC or 1ºC accuracy.
3- maximum distance 20 meters.
4- minimum vcc = 3 v
Any suggestions how to do this?. Any sensor. I saw a lot of sensors with low current, but the interface is spi and i don't thing that i can use spi with a cable 20 meters long!!.
i need to connect a temperature sensor to a pic, but i have some problems:
1- it is a battery project so i need to consider how much current i "spend" feeding the sensor and the signal condicioning.
2- need 0.5ºC or 1ºC accuracy.
3- maximum distance 20 meters.
4- minimum vcc = 3 v
Any suggestions how to do this?. Any sensor. I saw a lot of sensors with low current, but the interface is spi and i don't thing that i can use spi with a cable 20 meters long!!.