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i used a RL=47Kohm and a pcf8591t adc , i interfaced the analog Vout of the mQ-7 sensor with one of pcf8591 analog input pins then how should i interface the pcf with the 89c51 microcontroller ?
if there any thing wrong with the things that i have interfaced plz tell me ..
this is for my project...
i used 5v to 12v fan and i want to connect 5v to it then i want to interface it with the microcontroller, what should i use in order to let this fan work ? a transistor or an amplifier or what ? this is for my project pls help !!
pls i need an instructions and a Block diagram PLs ...
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