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Project

Single chip (PIC12F683) temperature data logger

Rating:

15

Author: Rajendra Bhatt

Last Updated: 2016-02-21

Package Version: 1.0.0.0

Category: Measurement

Downloaded: 2557 times

Followed by: 3 users

License: MIT license  

It is a very simple data logger project based on PIC12F683 microcontroller. The microcontroller reads temperature values from a temperature sensor on a regular interval basis and stores them into its internal EEPROM memory.
http://embedded-lab.com/blog/?p=2236

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DOWNLOAD LINK RELATED COMPILER CONTAINS
mikroC PRO for PIC
  • lib
  • src
  • exa
  • hlp
  • hex
  • sch
  • pcb
  • doc

Project Blog

It is a very simple data logger project based on PIC12F683 microcontroller. The microcontroller reads temperature values from a temperature sensor on a regular interval basis and stores them into its internal EEPROM memory. The recorded temperatures can be later transferred to a PC through serial interface. The sensor used in this project is DS18B20. It is a digital temperature sensor manufactured by Dallas Semiconductor (now MAXIM) that can measure temperature ranging from -55°C to +125°C with an accuracy of ±0.5°C over the range of -10°C to +85°C. Each temperature reading is stored as a byte into the internal EEPROM of PIC12F683, which means only the eight most significant bits of DS18B20 output is recorded.



Temperature data logger using PIC12F683

Temperature data logger using PIC12F683

The data logger is powered from a 9V battery using a LM7805 regulator IC. The three tact switches allows user to set the sampling interval.

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Circuit diagram

Circuit diagram

The circuit uses a single transistor based TTL to RS232 conversion circuit for transferring the recorded measurements to a PC through serial port.

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