dual Temp, humidity, and light, display and monitor

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i animal control officer , 1 of top complaints in summer people leaving pets in cars on hot days. can criminal offence here , have right enter vehicle if conditions life threatening.

what if use arduino make device monitors ambient outside temperature, humidity, , light level. second temperature long probe can insert through open window or door seal. want able see these values in real time on lcd have them recorded. , want alarm can set on fly (up , down arrows on device.)

i hoping guys can suggest arduino best. sensors use (something can certified great) ds18b20 - to92. , http://www.brewershardware.com/12-temperature-sensor-ds18b20.html probe.

also looking links , suggestions on programming this. remote device cant connect network (gsm not feasible) thinking make write values sd card. maybe in form of csv? , want time stamps constant clock might necessary.

i game wants out , thank much. first arduino project defiantly not last.

i wouldn't want breaking car based on readings "home-built" gizmo.   i assume equipment need be laboratory-calibrated , certified.

that said, can various sensors , i'd suggest prototyping/breadboarding 1 function/measurement @ time before integrating them together.  likewise, design , test time-stamping, display, alarm, , data-storage functions separately before integrating together.    1 measurement simple (once understand particular sensor), these modules/functions it's not going quick project...


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