Keyboard Interfacing to 8051
The key board here we are interfacing is a matrix keyboard. This key board is designed with a particular rows and columns. These rows and columns are connected ...
CCDA Servo Simulator Schematic Diagram
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How to interface LEDs with 8051 Microcontroller
This post is related to basic operation of 8051 microcontroller with LEDs. LEDs are connected with P2 port & 6 switches are connected with P1 port of 8051. By p...
Controlling of Stepper Motor rotation in both direction using 8051 Microcontroller
Stepper motors consist of a permanent magnet rotating shaft, called the rotor, and electromagnets on the stationary portion that surrounds the motor, called the...
Up-Down counter on 16*2 LCD using 8051 microcontroller
In this circuit 16*2 lcd IS used to show the value of count using 8051 microcontroller. The maximum value of count is 99 because. In this circuit we are using 8...
How to Interface 14-Segment using 8051 Microcontroller
In this circuit we are using 14-segment to show characters. 14-segments have 22 pins, with the help of these pins we can write characters on 14 segment. 8 pins ...
Temperature Indicator Using AT89C52 circuit
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Stepper motor control using microcontroller AT89C51 circuit
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How to display text on 16x2 LCD using AVR microcontroller (ATmega16)
This article is in continuation to the articleSingle character LCD display using AVR. The aforesaid article shows how to display a single letter onLCD. Moving f...
A microcontroller (MCU) is a small computer
A microcontroller (MCU) is a small computer in a single integrated circuit consisting of a CPU is relatively simple combined with support functions such as crys...
AVR ISP ScoketBoard
Most Atmel AVR microcontrollers can be programmed via their in-built serial programming interfaces (SPI). This method is ideal for in-situ programming, such as ...
How to implement a soft power switch controllable by microcontroller
A circuit such that the microcontroller can toggle a GPIO pin and shut the whole system (including microcontroller itself) down. And when the user presses a mom...
microcontroller Why this transistor logic as switch is not working
I opened remote of a RC car and extended wires out of backward, forward, left and right switches. So when I ground anyone of then the circuit completes andit se...
switches Raspberry Pi GPIO
Experiments with couple of floppy drives I have and it appears that on the step pin, current is limited to around 5 mA. This means that we can indeed omit the c...
microcontroller Can I cut off the 5v output of the IOIO to the Android
Project using Sparkfun`s IOIO for Android ( ) where power consumption is a concern. The IOIO board provides the phone with 500 mA charging if I`m correct, which...
microcontroller PIR sensor triggered by itself when using timer works without timer
A PIR sensor is triggered by itself when using a timer to wait 2 seconds after the sensor is triggered. Without using the timer to wait the sensor works as expe...
avr Programming an ATmega1284p with Arduino IDE and internal RC Oscillator
Program an ATmega1284p with my AVR Dragon and the Arduino IDE. So far I have installed mighty1284p, after writing my sketch. I compile it using the Arduino IDE ...
microcontroller Digital bargraph display driver circuit
For a project I need to display a progress bar of the activity performed by my MCU. For this purpose I am going to use a bargraph display, but the problem is th...
mosfet AVR Pin Dual Use: Input and Output at (seemingly) the same time
A bicycle light control circuit which reads in various buttons and sets various outputs accordingly such as headlight, taillight, blinkers, etc. My current desi...
microcontroller Selectable Voltage Divider Optimal Switching Point
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