This project describes an easy and inexpensive way of adding a digital thermometer and data logging feature to a PC. It involves a PIC microcontroller that gets the surrounding temperature information from the Microchip MCP9701 sensor, and sends it to a PC....

The Microchip PIC 16C84 was one of the first serial in-system programmable microcontroller. I saw PIC serial programmers published in Electronic magazines in 1993. Today, many PIC programmer circuits - for serial and parallel PC ports - are published on the....

The aim of this project was to create a front-end for Commodore 64 emulation using VICE. One of the primary problems with emulators (especially for machines from the `80s) is that there was no standard keyboard arrangement. In this project I took a broken....

This simple AVR Programmer able to transfer hex programs to mostATMEL AVR microcontrollers. It is more reliable than most other simpleAVR programmers available out there and can be built in very shortamount of time. This Programmer support the AVR....

Application note on how to design linear and switch-mode (switching dc-dc converter current source) battery charger applications that require external microcontrollers and related system-level issues for notebook computers....

There are several ways to convert an AC voltage at a wall receptacle into the DC voltage required by a microcontroller. Traditionally, this has been done w....

With the following circuit you can easily program the AVR microcontrollers AT90S1200, AT90S2313 (or ATtiny2313), AT90S8515 and AT90S4414, using the freeware programmer PonyProg by Claudio Lanconelli. You can download the program for free from the author`s....

UPS (Uninterruptible Power Supply) Reference Design provides a ready-made uninterruptible power supply solution with the flexibility of a microcontroller - PIC17C43 that offers a low cost solution and high performance not found in other microcontrollers. The....

This is a good Electronics & communication project on GSM Based Voting Machine System which uses AT commands to sens SMS through Microcontroller. The project has 2 modes viz. Normal mode and Security mode. In normal mode an authorized person of a local area....

Interfacing the LM335A temperature sensor to A/D converters, measuring temperature with LM35 LM335A sensor and the 9S12 HCS12 MCU, calibrated and uncalibrated temperature errors of IC temperature sensors....

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Microcontroller Based Accelerometer Project. Just as a speedometer is a meter that measures speed, an accelerometer is a meter that measures acceleration ..

This project is currently output two PWM signals but can be extended to many PWM signals very easy. The input to the microcontroller is 100HZ pulses as zero crossing. currently it is build for two channel DAC, the input at port1 and port2 of microcontroller....

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For the other components you should have most of the stuff lying around if you have doneany type of electronics except for the programmer, RS232 chip and PIC. For getting information out of the project and into the PC a USB to RS232 is needed and this can....

Digital clock project based on the PIC16C54 microcontroller can be designed using the following circuit diagram. This digital clock electronic project based on the PIC16C54 is a simple time-of-day clock incorporating four seven-segment LED displays and three....

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A touch screen is an electronic visual display that can detect the presence and location of a touch within the display area. The term generally refers to touching the display of the device with a finger or hand. Touch screens can also sense other passive....

analog-to-digital converters (ADCs) | printed-circuit board (PCB) | microcontroller or digital signal processor (DSP) | total-harmonic-distortion (THD) | ignal-to-noise ratio (SNR)...

The clock, which is made from 25 CD4000 ICs, three 555/556 ICs and a handful of discrete components, includes an alarm and a way of setting the clock that until now I have only seen implemented using microcontrollers. All this makes for a rather involved....

This tutorial explains how to read the content of the microcontroller `s flash memory. The source microcontroller reads the content of the memory and displays it on the LED s. The content is nothing but the program written in the memory of microcontroller.....

The following schematic shows the Relay Wiring Circuit Diagram for controlling an Air Conditioner or other higher high-current device from a microcontroller....

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RF is just way too cool not to use in your designs. But if you`re a newbie like me it is difficult to successfully build solid RF transmitters and receiver....

The Mini AV Test Box circuit is as simple and straight forward as I could design. It has three main sections that I split up in the schematic. The main devices used in the circuit are the 7805 +5v Regulator, 16F84A Microcontroller and 555 Timer. This is a....

RTD sensors are measured with a precision 24-bit A/D (analog to digital converter) with built-in programmable gain amplifier. Connections for 2-wire RTDs, 3-wire RTDs, and 4-wire RTDs are shown. Connecting and measuring RTDs with amplifiers and data....

With the connections made in this order on the connector it will not matter if the connector is placed the wrong way round as GND and VCC are then applied to clock and data. If VCC and GND had been at opposite ends of the connector then there would be a....

A wide range frequency meter is an useful tool for an electronics lab. This projects describes a frequency meter based on AT90S231 microcontroller that can measure input frequencies up to 50 MHz. The measured frequency is displayed on 6 digit multiplexed....

DC motor interfacing with microcontroller with the help of L293D H-bridge and trasistor based H-bridge. DC motor speed control using PWM. Interfacing DC motor with 8051, AVR, PIC microcontroller....

Microcontrollers are integrated circuits which consists of microprocessor with additional units like memories, input/output units (peripherals), etc. With this way of implementation, microcontrollers provide savings in time and space, and of course money.....

On a continuing mission to build an autonomous sailing robot we needed a way to more rapidly prototype boat designs and wanted to use a standard remote control model control system to save time by using off-the-shelf parts. When controlling servos with....