smart humidity gauge constituted by the humidity sensor and the microprocessor circuit

Published:2011/8/31 1:52:00 Author:John | Keyword: smart humidity gauge, humidity sensor, microprocessor | From:SeekIC

PIC16F874 has a wide range of supply voltage (+2.5 ~ +5 V), which is suitable for low voltage power supply. The quiescent current is less than 2mA. The RA port (RA0 ~ RA7) is the I / O interface. And the PA0 (also known as AIN0) port line is used to receive the voltage signal generated by the humidity sensor. Output bit PA1 ~ PA4 scans signal and receives inverting-phase drive signal through MC1413. Section between RB0 and RB6 of the RB port outputs 7-segment signal. And then the corresponding pen electrodes of LED display is within a ~ g. PIC16F874 also features of power-down protection. And MCLR reset the latch for the power-down side.



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