LCD Thermometer using Atmega8 and LM35.

Atmega8 is a popular 8-bit microcontroller from ATMEL. It has 8KB self-programming Flash Program Memory, 1KB SRAM, 512 Byte EEPROM, 6 or 8 Channel 10-bit A/D-converter. Up to 16 MIPS throughput at 16 Mhz. 2.7 - 5.5 Volt operation. The LM35 of National Semiconductors that is used in this project is a precision centigrade temperature sensor, which has an analog output voltage. It has a range of -55ºC to +150ºC and a accuracy of ±0.5ºC . The output voltage is 10mV/ºC . The output voltage is converted by the AD convertor of the AT Mega8. The temperature is displayed on an LCD module.


For circuits and software, CLICK HERE.

Digital Clock/Date/Thermometer with PIC16F628/PIC16F84A and DS18S20/DS18B20

Here is a small adjustable clock/date with thermometer function based on PIC16F628 or PIC16F84 microchip and DS18S20 or DS18B20 temperature sensor. The hardware part is very simple because it only uses pic microcontroller, the DS18S20/DS18B20 sensor, 4x7 segments (common anode, something like KW4-301xxx Series), four 2N3906 transistors, some resistors.

Read details here.