Radio alarm clock
The program makes use of the built-in AD converter of the PIC16F874 for sensing the touch buttons. The PIC has 8 AD ports, seven are used for the 7 touch-button...
Battery Indicator based on PIC18f452
If both the reading are high then the diode is short. If both the readings are Low then the diode is open. If any of read pins are low and the second is high th...
8052 Microcontroller Projects
Now-a-days every institution needs automation. As a part of college automation, we have decided to do a project Voice Interactive System for College Automation ...
Free 8052 Microcontroller Based Projects
Personal Safes are revolutionary locking storage cases that open with just the touch of your finger. These products are designed as "access denial" secure stora...
8051 USB PROGRAMMER
The above circuit uses RS232 for interfacing with PC. It is very simple circuit & works very well with PC. Power is drawn from usb port OR needs external supply...
Simple Serial Programmer for AVR
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8051 Selling Leads
This circuit shows a DS1236 that is used to monitor and control the power-supply and software execution of a processor-based system, and to provide a pushbutton...
USB AVR In-System-Programmer (ISP)
Nowadays, USBis the most popular connection connection between PC and peripherals such as AVR programmers, printers, scanners etc. For that reason I had to modi...
LED control system for 40 LEDs using a single PIC
In order to control 40 LEDs with a single PIC 18F2455 microcontroller, we broke the LEDs into a system of four columns containing 10 LED rows. Each of the 10 LE...
Ultrasonic Cleaner Circuit
Ail ultrasonic cleaner is useful to clean certain items. This circuit uses a microcontroller to control timing and give a digital readout, but only the basic o...
Perfect Pitch Circuit
Perfect pitch, which is based on the 8751 microprocessor, is an inexpensive and easy-to-build instrument tuner/frequency counter with a built-in headphone amp...
Microcomputer-To-Triac Interface Circuit
A microcomputer-to-triac interface uses a phototriac optoisolator to Jet safety-isolated logic signals directly control high-power loads. Depending on the inpu...
Adc Poller Circuit
Because the CS5501 16-bit-delta-sigma analog-to-digital converter lacks a start convert command, it converts continuously, outputting conversion words to its o...
Z-80 Bus Monitor/Debugger
Getting microprocessor designs to work is notoriously difficult when both the software and hardware are new. The ...
Dual 8051S Execute In Lock-Step
This hardware-software combination deletes clocks from the slave until both /iPs synchronize. The firmware...
Eight-digit-microprocessor-display
Display interface uses the ICM7218A/B with an 8048 family microcontroller. The 8-bit data bus (DBO/ DB7-IDO/ID7) transfers control and data information to the ...
Preprogrammed single-chip microcontroller
Twenty-five musical keys and 25 LEDs are provided to denote F to F" with half notes in between. Memory can store a played tune. There are ten preprogrammed tune...
Microprocessor triac array driver
In microprocessor control of multiple loads, the minimum cost per load is critical. A typical application example is a large display involving driving arrays of...
Data acquisition system
Charge redistribution to achieve A/D conversion. In typical applications, as a ratiometric conversion system for a microprocessor, V^p, will be connected to gro...
Microcomputer circuit
This is a 8048/IM80C48 Microcomputer with 8 character 16-segment ASCII triplex liquid crystal display. The two bit character address is merged with the data and...