Vacuum Tubes Valves
Musical & effects
Yagi Uda Antennas
Metal Detector Circuits
Liquid Sensing Circuits
Light Sensing Circuits
Voltage Detector Circuits
Air-Gas Detection Circuits
Human Sensing Circuits
RF & Radiation
Optical Sensing Circuits
Free Energy Circuits
AC to DC & DC to DC
Solar Cell Circuits
Micro Power Circuits
Switching Power Supplies
Light Laser LED
Digital to Analog
Analog to Digital
Data Bus Circuits
Voltage to Pulse
Current to Voltage
Frequency to Voltage
RF Converter Circuits
Sine to Square Wave
Voltage to Current
voltage to frequency
Period to Voltage
Video Wall circuits
TV Video Circuits
Motor Control Circuits
8051 / 8052
PCB CAD Software
Car bike Circuits
555 Timer Circuits
Remote Control Toy
H Bridge Circuit
DIY HV Variable Cap
DIY PMA alternator
Interconnection & Timing
Digital Signal Integrity
Digital & Bipolars
Sensors & Detectors
Regulated Power Supply
4 Band Resistor
5 Band resistor
6 Band resistor
Light Laser LED Circuits
Walkie high-accuracy data collecting system with LCD human-computer interaction function
LCD Display with Microcontroller
Here I have described how to connect a 16 by 2 LCD display to a microcontroller. Here I have demostrated it with very common pic 16F877A. This is the circuit diagram. Here I haven`t showed the power supply and oscillator connection for pic and LCD. LCD normally have 16 pins. If you carefully observed you can see number 1 or 16 have printed near th
alphanumeric lcd as counter
The communication technique with the LCD is the same like the last lesson, and for the current experiment we have added a counter which counts between 0000 and 9999. Our counter increments with 1 second delay. /* ` * ` Lesson nr. 16: ` Alphanumeric LCD as counter mode. ` Done by: ` Aureliu Raducu Macovei, 2010. ` ` In this exper
Microcontroller Voltmeter / Ammeter with LCD
Rectifier bridge voltage. See U2 element you used data sheet to know about maximum voltage it can work properly. On the other hand the minimum voltage on that pin mustn`t drop bellow c. a. 9V, or 6. 5V if low drop type U2 and U3 voltage regulators were used. Multimeter is suitable for voltage and current measurement in PSU, where current sense...
LCD2LPT with LIRC
Voltmeter + Ammeter LCD panel
This multimeter was designed to measure output voltage and current in a PSU, where the current sense shunt resistor is connected in series with load at the negative voltage rail. It needs only one supply voltage that can be acquired from main PSU. An additional function of the multimeter is that it can control (switch on and off) an electric fan u
LCD CLOCK USING 8051 (89s51) Microcontroller
This is a real time clock by using 89c51 micro-controller, clock`s data format is hour:min:sec, and it is displayed on 16x2 LCD, the code has been tested and compilled on Keil uVision compiler, circuit diagram for the project is shown below.
AKAI LTA-27A901 LCD TV
HYUNDAI HLCD-32XT 32 LCD TV MAIN POWER REGULATOR [SMPS]
EMERSON LC320EM8 A LCD TV SERVICE
SYMPHONIC LCD-B20A6 CIRCUIT DIAGRAM
How to display text on 16x2 LCD using AVR microcontroller (ATmega16)
This article is in continuation to the articleSingle character LCD display using AVR. The aforesaid article shows how to display a single letter onLCD. Moving forward towards learning to work with LCD, this article explains how to display a string on LCD. Displaying string is occasionally used in many applications. The connection of the LCD with t
Interfacing the LCD module to PC parallel port
Tutorial on Interfacing the 20x4 LCD module to PC parallel port.
16X2 LCD programming
lcd 2 usb Using a C language
Making The LCD Expansion Board for PIC18F4520
A very useful expansion board for our PIC development board. It will be a Do It Your self (DIY) LCD Expansion board. The expansion board can be plugged into the PIC development board to add 16x2 Alphanumeric LCD Support to it. Since LCDs are required in many projects and experiments it will be a very helpful board. I recommend you to read the...
Digitally controlled FM transmitter with 2 line LCD display
Each step will result in a self functional unit. In the end of this journey, you will be able to link the steps together into a very powerful FM transmitter. This part will explain the main controlling unit for the FM transmitter. This part is very important since the transmitter frequency is digitally controlled and thereby very stable. The PIC16
AVR to LCD
If you can`t see any characters displayed on the LCD (and you`ve checked that the hardware and software are working) turn the LCD Contrast pot until you can see the characters. To load an 8 bit character or LCD command into the 74HC164 shift register, the code shifts the byte out bit by bit through PORTB bit 6, (LCDDat) clocking the 74HC164...
LCD in 4 bit mode with PIC16F877
When you are using LCD in 4 bit mode you have to send data two times where in 8 bit mode you only have to write once, this ultimately keeps your microcontroller more busy with LCD. If you are doing only a few things with your microcontroller then its ok you will not have to face the problem of overhead, but this becomes critical when you are...
lcd to pic16c54 schematic
diy digital clock ds1307 rtc with arduino uno and lcd
This is an example how to interface to the standard Hitachi-44780 LCD using an 8051 microcontroller and SDCC as C Compiler. I use a standard 16-character by 2-line LCD module, see schematic below. Here, I use 4-bit interfacing.
rgb lcd shield for arduino
avr 4 bit lcd interfacing tutorial
lcd based digital alarm clock
wifi radio with lcd display
This is the seventh part of an ongoing series about building a low cost, open source streaming internet radio. If you haven`t already, check out the previous parts (see the links at the end of this article) for some background about the project. In part six, we used OpenWrt`s UNIX-style shell commands to interface with mpd, the music player daemo
lcd oscilloscope for spectrum analyzers using pic16f876a
1. Spectrum-analyzer project 2007 update Since the development of the wide-band VCO almost 10 years ago, the whole spectrum-analyzer project with all relat..
my gps lcd display project using pic16f84
This is a project that I started back late 2003 when I just starting to learn PIC programming. I wanted to building something that actually did somthing us..
pic16f84a lcd interfacing code in 8bit mode proteus simulation
This post provides the LCD interfacing code using PIC16F84A microcontroller. This code is written in C language using MPLAB with HI-TECH C compiler. You ca..
pic16f877 based controllable digital clock using lcd display codeproteus simulation
This PIC16F877 microcontroller tutorial answers the question, "" How to implement a controllable digital clock using PIC16F877 ? "" Using PIC16 simulator (Pr..
Light Sensing Circuits
Light Dimmer Circuits
Ultrasonic distance finder circuit
The circuit described here uses ultrasonic oscillations and operates based on the propagation velocity of these oscillations in the air. Thus, we can easily determine the distance of two points if the time within which the wave travels this distance is measured. There are three main categories of distance measurement methods in use: a) By...
Simple Metal detector circuit with CD4030
Sometimes the precious metals are hidden too deep and are not detected except with complicated devices. In many cases, however, small pieces of precious metal buried near the surface can be detected by relatively simple means. Everyone is very attractive to find something potentially valuable, hidden a few centimeters below the soil. So many...
Fully automatic watering circuit for flower pots
Many times for various reasons we forget or can not water the plants that we have in our homes. And many humidity sensors units just notify us with a beeping sound or with a flashing light, that the pot needs watering. But what if we are away from home? This circuit comes as a solution to this problem. Depending on humidity of the pot at...
Simple deep searching metal detector circuit
The principle behind a metal detector is really very simple. Proof of this is the circuit that follows, in which it proves that the construction of a metal detector can be done in the minute, with few components that we find very easily everywhere. With the circuit of this metal detector, it is possible to detect a metal coin in depth of 90 to...
Sub-Harmonic Bass Converter for Electric Guitars
The sub-harmonic bass generator is a sound producing unit for guitars. The sound it produces looks very much like that of the bass guitar. The octave generator is sometimes quite unusual since it does not produce any of the usual ways of coloring the sound, such as filtering or distortion. Instead, a frequency division system produces outputs...
Echo Depth Sounding Sonar for Boats
In the past the sounding (sea bottom measurement) was done with the "bullet", that is, with a heavy lead object that the seamen plucked into the sea hung from a calibrated rope. As soon as the "bullet" reached the bottom, the depth appeared directly from the calibration of the rope. This arrangement still exists in some yachts. The big...
100W HiFi Audio Amplifier Circuit
This Amplifier was designed to have the following specifications: Distortion less than 0.1% at full power of 100W even at 20KHz. Power has to be attributed to an extended bandwidth. The output transistors must be protected against short circuits. The power supply must be symmetrical so that no electrolytic capacitors are needed at the outlet....
Plant-Pot Water Level Indicator Circuit
A series of LEDs serve to alert the gardener when plants need water. Using two conventional digital integrated LEDs and a series of LEDs, we make a very useful device for gardening. The device detects the amount of water in the pot and alerts the grower. The circuit of the device is shown in Figure 2. The water detection is made from the bottom...
Analogue Sound Preasure dB-Meter Circuit
The best human ear can capture sounds from 20Hz to 20KHz. These limits are known to be the broadest that can exist. Normally the normal limits range from 100Hz to about 13KHz and depend on the age and health of the individual. We for our measurements and to have a good accuracy we will get the limits of 20Hz to 20KHz. A sound to be heard does...
DIY HV Variable Capacitor
DIY PMA Alternator Plans
Digital Signal Integrity