What exactly gives you these values? Is it the Arduino IDE ?
yes ? use arduino 1.0 program. But when ? download calibrate temperature program to the arduino uno with using arduino 1.0, it gave me -10 ,-9.87,-10... values from serial monitor but ambient temperature is 23 C.
Please provide exact details on what you have connected.
? convert your connection in a useful way for my ardunio because your connection is according to the atmega 328. For example, in your circuit you connect temperature connecion to the 28. pin ( PC5 (ADC/SCL) ) ? connet it in my circuit to the analog input 5 pin. Another example you connect zcd conection 4. pin (PD2 (INT0) ) i connect it in my circuit to the digital pin 2.