uart interfacing with avr primer
#uart
#avr
#serial communication
#microcontroller
#embedded systems
#communication protocol
#data transmission
#primer
#hardware interface
#programming
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DK04 monitoring module with the computer communications interface circuits
As shown in the figure, D187 is a universal asynchronous receiver-transmitter (UART). Its RX/TX signals are received through optocouplers N21, N22, and N29, facilitating RS-485 communication. The interface receiver/transmitter D28 and microprocessor D211 are completely optically isolated. D197 serves as...
Secured room access system
Security is a primary concern in daily life, and an access control system is a crucial component of a security framework. The microcontroller-based digital lock described here is an access control system that permits only authorized individuals to enter a...
dc motor control avr atmega8
A DC motor from an old personal stereo cassette player has been utilized in this circuit, which provides control over both the speed and direction of the motor. The circuit employs PWM waveforms to drive a MOSFET H-bridge, as illustrated...
spider prog content
The avr-gcc/binutils combination can generate Intel Hex files that are suitable for uploading to an AVR microcontroller using sp12. If assembly language is being used, an assembler is necessary to convert human-readable assembly into microcontroller-readable machine code. Tom Mortensen has...
avr
Inspired by the work of Nanode and a recent Instructable, an AVR-based Ethernet board has been developed that can be programmed and utilized similarly to an Arduino. This straightforward design is based on the ATMega microcontroller and Microchip's ENC28J60 Ethernet...
AVR Color Clock
This page describes a color clock that displays the time using two RGB LEDs, one for hours and one for minutes. It uses standard color coding for components, with two additional colors to accommodate the twelve distinct color representations needed....
POWER LINE MODEM FOR COMPUTER CONTROL
This circuit employs an 87C57 microcontroller along with several peripherals to convert X-10 power-line carrier-code formats from a personal computer for use with an X-10 power-line interface in a home-control system. Software details can be found in the reference.
The circuit...
delay circuit for photography
This article outlines the construction of a simple microcontroller-based delay circuit designed for photographic applications such as drop or high-speed photography. It can control the trigger lag of cameras and flash units, generate periodic trigger pulses, or manage magnetic valves....
using microcontrollers
This schematic illustrates the placement of a decoupling capacitor on the right side, which should be positioned as close as possible to the power pins of the microcontroller. It includes a crystal oscillator, which is optional; an internal RC oscillator...