Digital Thermometer using ATmegsa8 and LM335
The digital thermometer circuit utilizes the ATmega8 microcontroller, which serves as the central processing unit, and the LM335 temperature sensor, which provides an analog voltage output proportional to the temperature. The LM335 operates within a range of -40°C to +100°C, outputting 10 mV per degree Celsius.
To design the circuit, the following components are required:
1. **ATmega8 Microcontroller**: This 8-bit microcontroller features multiple analog-to-digital converters (ADCs) that can convert the analog voltage from the LM335 into a digital value. The microcontroller should be programmed to read the ADC values and convert them into temperature readings.
2. **LM335 Temperature Sensor**: This device will be connected to the microcontroller's ADC input. It is essential to ensure proper power supply and grounding to minimize noise in the readings.
3. **Display Module**: A suitable display, such as a 16x2 LCD or a seven-segment display, should be chosen to show the temperature readings. The microcontroller will control this display to present the processed temperature data.
4. **Resistors and Capacitors**: Additional passive components may be needed to filter the output from the LM335 and stabilize the power supply to the microcontroller.
5. **Power Supply**: A stable power source, typically 5V, is required to power the microcontroller and the sensor.
The circuit design should include connections from the LM335 to the ADC input of the ATmega8, a power supply circuit, and the interfacing of the display module. The microcontroller will need to be programmed in C or Assembly language to read the ADC values, convert them to temperature, and update the display accordingly.
In summary, the design of the digital thermometer involves selecting appropriate components, establishing connections, and programming the microcontroller to interpret temperature data and control the display output effectively.hello , I am planningto build Digital Thermometer using ATmegsa8 and LM335. Can Somebody tell me how should i go about ?? I want to display it on.. 🔗 External reference
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