Description: Air humidity alarm, as the name implies, is used to measure humidity in the air apparatus, he humidity through a capacitor and a frequency output circuit for detection of air humidity, the humidity changes in the frequency of the output into. Through the single-chip frequency of the input into a percentile and humidity through the LCD display, one can clearly see through the display of the relative humidity of air. Single-chip can be programmed in advance to set a limit value, when the environmental humidity to achieve set alarm circuit humidity values, while LED light changes to achieve the purpose of humidity alarm.
- [hs_tl555] - The main source is the use of the TLC555
- [CALC_RH_2T] - 4 to calculate relative humidity, temper
- [Smartinstrument] - Intelligent machines (SCM application sy
- [hgfd] - : AT89C51 single-chip based on the intro
- [qqq] - Trojans use delphi to achieve a simple s
- [fdbj] - Intelligent wireless burglar alarm desig
- [wenduxitong] - Can use a single-bus digital temperature
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