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Midi Generator with ATtiny26-8PI – Circuit Schematic
Midi Generator with ATtiny26-8PI
This circuit based on ATtiny26 but it could be anyone microcontroller of AVR family. Produce stable one MIDI tone and you can change it by press some keys like...
church bell with timer and LCD – Circuit Schematic
church bell with timer and LCD
This circuit is a church bell controller. Basic component is an ATmega32 microcontroller. At the circuit 2 24LC32 eeprom memories is being used, the 1st for int...
AVR LCD Microcontrolled Oscilloscope – Circuit Schematic
AVR LCD Microcontrolled Oscilloscope
A few months ago as I was surfing on the net, I saw an oscilloscope based on PIC18F2550 microcontroller and a KS0108 controller based graphical LCD. That was St...
ASCII Programmer PIC16F84 – Circuit Schematic
ASCII Programmer PIC16F84
The idea behind this project is to provide some means of loading a program into a PIC that will then be able to program other PICs in a more conventional way. H...
Christmas Star with LEDs – Circuit Schematic
Christmas Star with LEDs
Using a PC parallel port to control external devices is a popular approach these days but I certainly couldn’t afford to tie up a PC for the few weeks leading...
AVR terminal for serial port – Circuit Schematic
AVR terminal for serial port
The LCD display is represented by the connector X1. It has a HD44780 compatible LCD controller and I'm using the 4-bit interface to send data to the LCD control...
Electronic LED compass – Circuit Schematic
Electronic LED compass
This is a compass circuit based at AT90S2313. The output drives 8 LEDs to indicate the different horizon directions....
IR Encoder/Decoder with PIC12C508 – Circuit Schematic
IR Encoder/Decoder with PIC12C508
The receiver chip uses a Panasonic 4602 38KHz receiver and that's it for external components. It has the serial input (GP3) , two RC hobby servo outputs (GP0/G...
Discolight using PIC16F84A – Circuit Schematic
Discolight using PIC16F84A
External circuit converts bass beat of music into pulses.The motor is controlled by them. If theres bass beat recognised then the motor rotates one direction(i...
Servo tester with PIC12F675 – Circuit Schematic
Servo tester with PIC12F675
This is a simple servo tester which will comprehensively test the capabilities of almost any modern servo. It has two pushbuttons, CENTRE and SWEEP and a potent...
Timer and Interrupt – Circuit Schematic
Timer and Interrupt
There are 4 timers in PIC18 which are timer0 to timer3. Timers are used when precise timing event need to be generated. Timers are usually used in conjunction w...
PWM controller with PIC18f2455 – Circuit Schematic
PWM controller with PIC18f2455
The use of pulse width modulation (PWM) is common for the use of controlling power to a particular electrical device. Motor speed control, LED contrast control,...
I2C using (MSSP) – Circuit Schematic
I2C using (MSSP)
I2C are widely use for to communicate with external peripheral such as port expender, EEPROM, Real Time Clock etc. The Master Synchronous Serial Port (MSSP) mod...
Auto Baud Rate with PIC18F2455 – Circuit Schematic
Auto Baud Rate with PIC18F2455
Most of the newer PIC come with the EUSART module which have the function for auto baud rate detection. The features allow a person to set the baud rate at runt...
A/D converter 16Bit with LCD and PIC18F2550 – Circuit Schematic
A/D converter 16Bit with LCD and PIC18F2550
The analog to digital converter (ADC) is a commonly required in most of the projects. Analog voltage measurement can be done using the ADC hardware built in tog...
PIC18 programmer – Circuit Schematic
PIC18 programmer
The SCHAER+ programmer is a programmer for PIC18 family from a PC parallel port (LPT). It is derivated from the SCHAER programmer I used to download my projects...
Count Down Timer with PIC16F84A – Circuit Schematic
Count Down Timer with PIC16F84A
The choice of material to read or drive is the definition of three digits (Bit), RA0, 1,2 PORTA of the PIC at the entrance of 74HC138A. To select a material for...
8 LED Effects using PIC16F84A – Circuit Schematic
8 LED Effects using PIC16F84A
Five pins RA0 to RA4 are used as inputs. The pins are connected to the 5V average resistance 10K (Pull-up). So when no switch is not depressed all the pins have...
LED SignBoard with PIC 16F84A – Circuit Schematic
LED SignBoard with PIC 16F84A
The pins RA3 to RA0, are used as outputs driving each column LED. The pins RB0 to RB7 are used as outputs driving signal for each column LED. The 74HC154 (Decod...
Magnetic Card Reader with PIC12F675 – Circuit Schematic
Magnetic Card Reader with PIC12F675
The reader mechanism shown was purchased from All Electronics for $1.50. The unit provides the magnetic head on a spring mechanism along with low level head sig...