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Recent content by burassu

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    digital counter using 8051

    Hi I am doing an up down digital counter , the counter should count from 0 to 30 . I know how to increment and decrement. but the problem is I have to increment/ decrement the units alone than the tens and then display them on an lcd. How can I do It pls ???
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    8051 adc another channel

    helpful , I did it .
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    servo control with 8051

    Hi I am trying to drive a servo from an 8051 controller , please can anyone give me an example , so that I can have an idea on how to start. please help:|
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    8051 adc another channel

    hi i am working with the internal adc of the 89c51ac2 . And I did a code which gets a value from channel 0 (p1.0) and then it is displayed on the lcd . Now i am trying to get the data from channel 1 (p1.1) but nothing is happening. Below one can find my code , I think the problem is where...
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    comparator as a switch to 8051

    the pull up is lowered to 2k2 , the voltage is pure 5v , the ic was also replaced.. im testing it on a breadboard ..I dont know what to do more .... ---------- Post added at 18:31 ---------- Previous post was at 18:25 ---------- So what do you suggest ? Because the controller still is reading...
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    comparator as a switch to 8051

    What do you mean with average ??? ---------- Post added at 18:16 ---------- Previous post was at 18:13 ---------- I have replaced the Ic , the same voltages were given at the output .
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    comparator as a switch to 8051

    It actually is working , the only problem is that the output voltage is not that of 5v .
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    comparator as a switch to 8051

    even If i remove the circuit from acting as an input to the micro controller it is giving an output voltage of 2.5v. I don't know what to do.
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    comparator as a switch to 8051

    yes of course but the voltage is to low .
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    comparator as a switch to 8051

    Hi,I have designed a light sensor by using this circuit->>>>>> **broken link removed** . As a comparator Ic I am using the Lm339. The circuit is working perfectly but I need it to be connected with an 8051 to act as a switch. But the only problem is that the output of the comparator when...
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    switch on led when having 2 adcs not having the same value

    Yes , but actualy they will be replaced with lm35 . and the crystal is that 0f 18.432HZ
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    switch on led when having 2 adcs not having the same value

    //************************ Functions and variables declerations.****************** #include <reg51.h> //Pre-processor commands. #include <absacc.h> unsigned char mess[] = "Temp in :"; unsigned char mess2[] ="Temp select :"; unsigned char x; //Create character x. unsigned char...
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    switch on led when having 2 adcs not having the same value

    89C51AC2.This is the part number of the controller , our lecturer calls it 8051. https://www.keil.com/dd/docs/datashts/atmel/t89c51ac2.pdf
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    switch on led when having 2 adcs not having the same value

    I am using the adc of the ucontroller of port 1.
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    switch on led when having 2 adcs not having the same value

    I am using an 8051 ucontroller and I am programing it with keil in c , and I need to switch on an led while the value of an adc1 is not equal to the value of adc2. Can anyone help me by giving me an example ,since I am new to this system I am not that familiar to it. Tnks !!
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