digital thermometer with pic16f84


Posted on Feb 7, 2014

Resign a complex solution using few external components, resulting an low cost application that provide a high precision measurement. This Digital thermometer microcontroller project use watchdog timer function to measure temperature. The WDT on all PIC-micro microcontrollers has a nominal time-out period of 18 ms. The WDT time-out period varies


digital thermometer with pic16f84
Click here to download the full size of the above Circuit.

with temperature, VDD and part-to-part process variations. very little operating current but if any key is pressed, it wakes up` from SLEEP and updates the WDT count, and checks for additional key presses. If there are none, it returns to SLEEP mode. 1. Place the system in the temperature forcing system at the higher of the two calibration temperatures, and wait 5 minutes for the temperature to stabilize. 7. Press the SET key. The new low temperature calibration is stored in data EEPROM, and the firmware sets a flag (Default) to indicate that new calibration information is available.




Leave Comment

characters left:

Related Circuits

  • New Circuits

    .

     


    Popular Circuits

    50 Watt Amplifier
    Carrier-Operated Relay
    Arduino SFR Ranger Reader
    Catmans Litterbox
    Simple Phono Preamplifier
    LA3361 PLL FM Multiplex Stereo Demodulator
    Homemade TV remote control off electrical power supply circuit
    Nightlight lighting circuits
    Automatic lighting control telephone signals



    Top