Friday, 11 May 2012

8 channel light chaser using 8051



6 function 8 channel light chaser using 8051. A 6 function 8 channel light chaser using 8051 is shown here. The hardware and software of this circuit are very simple and the light functions gets repeated one after another  automatically. P1.0 to P1.7  of the microcontroller (AT89S51) are assigned as the output pins. Corresponding LEDs are connected to the output pins through 1K current limiting resistors (R1 to R8). The sequence by which the output pins (P1.0 to P1.7) goes high and low is determined by the program and the LEDs follow this sequence. Circuit diagram of the 6 function…
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Blinking LED using 8051

Blinking 1 LED using 8051 This is the first project regarding 8051 and of course one of the simplest, blinking LED using 8051. The microcontroller used here is AT89S51 In the circuit, push button switch S1, capacitor C3 and resistor R3 forms the reset circuitry. When S1 is pressed, voltage at the reset pin (pin9) goes high and this resets the chip. C1, C2 and X1 are related to the on chip oscillator which produces the required clock frequency. P1.0 (pin1) is selected as the output pin. When P1.o goes high the transistor Q1 is forward biased and LED goes…
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4 Books to Learn 8051 Microcontroller-Indian editions

Hello friends, it has been a while since I published here. The fact is that I have been busy working on some good projects, that I didn’t get enough time to write anything useful. This article is for students and hobbyists who are interested in playing with micro controllers. I thought of introducing you to a handful of cool and really useful books on 8051 micro controller. The books I suggest here are all Indian editions and hence links to Indian shopping site – Flipkart is only given. Very soon I will come up with an article that reviews global…
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