Single chip (PIC12F683) temperature data logger

Description: This project involves a straightforward data logger utilizing the PIC12F683 microcontroller. The microcontroller periodically reads temperature values from a temperature sensor and stores these readings in its internal EEPROM memory.

The circuit design for this data logger project incorporates several key components to ensure effective operation. The PIC12F683 microcontroller serves as the central processing unit, executing the programmed instructions for reading and storing temperature data.

A compatible temperature sensor, such as the LM35 or DS18B20, is connected to an analog input pin of the microcontroller. The choice of sensor will depend on the required temperature range and accuracy. The microcontroller's ADC (Analog-to-Digital Converter) functionality is utilized to convert the analog voltage output from the temperature sensor into a digital value that can be processed.

The internal EEPROM of the PIC12F683 provides non-volatile storage for the temperature data. This allows the logged data to be retained even when the power is turned off. The microcontroller is programmed to read the temperature at specified intervals, which can be adjusted based on the application requirements. A timer or delay function within the firmware manages this periodic reading.

To power the circuit, a suitable power supply is connected to the microcontroller, ensuring that it operates within its specified voltage range. Additionally, bypass capacitors may be included near the power pins of the microcontroller to filter out noise and stabilize the power supply.

For data retrieval, the circuit can be designed to include a communication interface, such as UART or I2C, allowing external devices to access the stored temperature data. This feature facilitates easy data transfer for analysis or display purposes.

Overall, this simple data logger project effectively demonstrates the integration of a microcontroller with a temperature sensor and EEPROM memory, providing a practical solution for temperature monitoring applications.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.