AT89S52 Termistor Termometre LCD Display

Termometre devresi AT89S52 üzerine kurulu NTC Termistör ve HIH3160 nem sensörü ile sıcaklık nem bilgisini veriyor. Devrenin Display ve LCD göstergeli iki versiyonu var kaynak C kodları ve Orcad ile hazırlanmış şema dosyaları var.

Thermistor Thermometer: LCD version: The ADC and thermistor circuits are quite the same as the 1st version. The ADC can be LTC1298 or MCP3202. Now with this design, P0 is used to interface LCD bus. SW1 is optional key switch. Since the number of I/O port are not many, we then can replace the 40-pin MCU with 20-pin MCU easily. J2 is available for connecting another sensor. The input range is 0 to +5V. HIH-3160 Honeywell Relative Humidity Sensor

Kaynak: http://www.kmitl.ac.th/~kswichit/thermistorLCD/ Alternatif link: at89s52-termistor-termometre-lcd-display.rar