Serial communication Tutorials
#serial
#UART
#RS232
#data transmission
#microcontroller
#protocol
#baud rate
#TX/RX
#embedded systems
#PC interface
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ON/OFF button using Microcontrollers
Using a switch to power up your microcontroller projects may not be a good idea if you need to "wake" the PIC during some events. For example: A metal detector sends a pulse indicating a car is ready to enter...
Talking Yoda head
The talking Yoda head consists of a Yoda mask and a microcontroller system to achieve the desired operation/effect. The basic operation of the project was specified as follows: The head was to be placed inside a closed box. Upon opening...
DIAL ALARM-1
This is the lowest cost dialing alarm on the market and shows what can be done with an 8-pin microcontroller. The complete circuit is shown below. You cannot see all the features of this project by looking at 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....
Microcontroller and Motor Driver Circuit Board
Efforts were made to minimize the number of wire jumpers on this board, but space constraints arose due to the integration of the microcontroller and motor driver on a single board. The design would have been cleaner without the inclusion...
Single Supply RS232 Interface for Bipolar AD converters
The LT1180 RS232 transceiver includes a charge pump which produces low ripple supplies with sufficient surplus current to drive a CMOS A to D converter and precision voltage reference. The circuit operates from a single 5V supply and draws a...
Layout Control Mother Board
The layout control motherboard is designed to facilitate the management of various sections of a layout. It features a microcontroller that connects to the MRNet bus and multiple slots for inexpensive control and sensor boards. All control and sensor boards...
control interface via pc keyboard
One of the more challenging aspects of creating a control or security system that utilizes a PC, such as a burglar alarm, is connecting the sensors to the computer. This typically requires specialized interface expansion boards, and programming that includes...
microcontroller How does this power supply circuit work? (MCU + LM317)
The filter consisting of resistors R1, R2, and capacitor C1 integrates the PWM waveform. The purpose of the operational amplifier appears to be that of a non-inverting amplifier, with the gain determined by resistors R6 and R7. However, the need...