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
Interconnection & Timing
Digital Signal Integrity
Digital & Bipolars
Sensors & Detectors
Regulated Power Supply
4 Band Resistor
5 Band resistor
6 Band resistor
AVR Microcontroller Circuits
AVR Microcontroller Circuits
Fireflies based on tiny AVR
When firs time found this article, i think it`s a great project using only few component. I like microcontroller project based on LED. And as you know this..
How to handle digital input/output(I/O) in Avr Microcontroller
How to handle digital input/output(I/O) in Avr Microcontroller? Explained using basic programs and circuit to glow an LED,generate stepper motor sequence,read push button switch and key debouncing..
How to use SPI (Serial Peripheral Interface) in AVR Microcontrollers
SPI stands for Serial Peripheral Interface and it is the simplest among all the communication protocols. 8bit data registers in the devices are connected by wires. These data registers works as shift registers and one of the device controls the data exchange inside the SPI Network. The device or devices that controls the operation inside the netwo
Tutorial on using ADC (Analog to Digital converter) unit of AVR micro controller
A simple tutorial on using ADC (Analog to Digital converter) unit of AVR micro controller illustrated using Atmega8 with circuit diagram & codes..
How to add 32K crystal/clock source to AVR Microcontroller (ATmega8)
This article explains how to add 32K external crystal/clock source to Atmel AVR micro controller Atmega8 with circuit diagram & C program..
ISP Programmer/Burner with circuit diagram for AVR Atmega Micro Controller
ISP programmer with circuit diagram for AVR Atmega32 micro controller.This ISP burner circuit is an adaptation of Pony programmer and uses ponyprog software..
How to work with External Interrupts in AVR micro controller (Atmega8)
A demo of external interrupts in AVR (Atmega8) micro controller with circuit diagram and C code/program as ISR (interrupt service routine)..
AVR Serial Port Programmer
Entire AVR programmer has been build with using common parts and fits in the case of the serial connector. The socketpcb has been created to fit a 28-DIP AVR ATmega8 microcontroller, but you can build a socket pcb for any other AVRmicrocontroller out there. This AVR programmer is compatible with a popular PonyProg software that shows you a statusb
USB 8051 (89 series) & AVR Microcontroller Programmer
RS485 Library for Windows and Atmel AVR 8-Bit
This project implements a half-duplex, master/slave communications protocol based on RS-485 bus hardware. A Windows PC plays the role of bus-master and several Atmel 8-bit AVRs assume the role of bus-slaves. The Windows part is written in C+, the ninth data bit is simulated by the parity bit, the transceiver direction is switched by the RTS line.
ATMEGA128RFA1 AVR Microcontroller And Best-in-class 2.4GHz RF Transceiver
The ATR0981 is a monolithic IC manufactured using Atmels advanced SiGe technol ogy. The IC performs a transmit and receive front-end function, dedicated for a frequency range of 300 MHz to 500 MHz. It consists of a Low-Noise Amplifier (LNA) and a Power Amplifier (PA) with good Power-added Efficiency (PAE). By ATMEL Corporation
Digital Sound Recorder With Avr And Dataflash
One of ZiLOG`s most popular Z8 One Time Programmables (OTPs), the Z86E02 features a 512-byte EPROM 61 bytes of RAM, 14 I/Os, Watch-Dog Timer Power- On-Reset, a Low-Voltage Protection circuit and one additional Timer Special fea- tures on the Z86E02 include an RC Oscillator option, Register architecture, and two Analog Comparators All these feature
Ponyprog Circuit for AVR & PIC16F84s
TEA5767 FM Radio Module C51 AVR Schematic for Philips
This circuit is intended to program AVR controllers such as the AT90S1200 via the parallel port. The circuit is extremely simple. IC1 provides buffering f..
atmega 32a programming
A cellphone operated robot and i`m stuck with Atmega32A microcontroller programming. As software you can use then AVR STUDIO 4. Unter the Tools you can find the Menu "Programm theAVR" Chose there your used Programmer and you can setup and Programm your controller. the loading firmware is free. the chip ATMEGA8L is sold below 100/- usb socket and...
16x2 Alphanumeric LCD Interfacing :: AVR Tutorials
The RW line is the "Read/Write" control line. When RW is low (0), the information on the data bus is being written to the LCD. When RW is high (1), the program is effectively querying (or reading) the LCD. Only one instruction ("Get LCD status") is a read command. All others are written commands so RW will almost always be low. >>While using LCD...
90S2313 AVR Robot Board
The Atmel AVR series are very good microcontrollers with quite a rich instruction set, rich enough that lots of folks have good compilers for them so we don`t have to learn their assembler. A very rich compiler available is the BASCOM/AVR compiler from MCS Electronics. I`ve used this compiler for prototyping the software on my 90S2313 robot board
AVR Microcontroller Interface with Stepper Motor
In this Tutorial we are using atmega8 with 4 MHZ Crystal and unipolar stepper motors, ULN2003 is Darlington pair driver I.C s used
Serial Avr Programmer Circuit
The Introduction for HD44780-based LCDs with AVR Microcontroller
Using an accelerometer with an AVR microcontroller
AVR Development Board
The microcontroller is an AT90S8535-P in a DIP40 package. Note that this microcontroller is pin by pin, hardware compatible with other members of the analog series of AVR microcontrollers, like ATMega8535 and ATMega16. However, there are many differences between these microcontrollers. Consult the data sheets before making the replacement. The ext
Ponyprog Circuit for AVR & PIC16F84
EPROM adapter for ATMEL 89 Series Flash Microcontroller Programmer
Diode D1 and resistor R1 provide the VDD isolation when programming the 24 pin devices. The jumper J3 must be shorted for 24 pin devices, and open circuit for 28 pin device programming. Following EEPROMs are pin compatible with their EPROMs version, We are not responsible for any injuries or damage caused by information from this website! Working
Acceleration Monitor using ADXL202 and AVR
The schematic show that the AccelR8 only uses 3 IC`s. An AVR 8515 microcontroller do the calculation work and controls the other circuits. An MAX603 controls voltage and power-on/power-off. And the chip that makes it all possible, the ADXL202 from Analog Devices measures the acceleration. This chip is a small wonder. It uses a tiny micro machined
Atmel 8051 Flash Based Microcontroller Programmer
The Atmel Flash devices are ideal for developing, since they can be reprogrammed easy and fast. If you need more code space for your application, particularly for developing 89Cxx projects with C language. Atmel offers a broad range of microcontrollers based on the 8051 architecture, with on-chip Flash program memory.
Atmel 89C2051 In-Circuit Programmer
This is a "beta release" schematic. Use at your own risk The idea is to add this circuitry to a board with already has ram at 2000 and an 82C55 I/O chip to provide ports A, B and C. Warning: not shown here is a memory mapping trick which is described below. You must figure out a way to provide the necessary memory mapping to make beta version 0. 00
Atmel 89C2051 prototype board
This single sided proto board provides an economical solution for developing and testing the projects around Atmel 20 pin series u-controllers (89Cx051 & AVR). Figure 1 shows the circuit diagram of proto board. All port connections are available for user interface around the proto area including the power supply pins. MAX232 serial driver is used
Atmel AVR and 8051 series ISP programmer
This ISP Programmer can be used either for in-system programming or as a stand-alone spi programmer for Atmel ISP programmable devices. The programming interface is compatible to STK200 ISP programmer hardware so the users of STK200 can also use the software which can program both the 8051 and AVR series devices. Figure 1 shows the circuit diagram
ATMEGA16 8-bit AVR Microcontroller with 16K Bytes In-System Programmable Flash
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 microcontroller ATmega103, ATmega161, ATmega163, ATmeg.- Master MCU based on the AVR multi
ATMEGA32 8-bit AVR Microcontroller with 32K Bytes In-System Programmable Flash
This article describes the Gadgets Gizmos and Arduino (ATMega328). The content is very simple, very helpful. Components in this article can help you understand better understanding of this article. For example, in this article, you can go to find and buy these components: ATMega328. A Geek How-To, . Circuit Kit: Overview In order to raise awarenes
Arduino Projects and Circuits
PIC Microcontroller Circuits
Microcontroller Programmer Circuits
68HC11 Microcontroller Circuits
8051 / 8052 Microcontroller 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...
Digital Signal Integrity
Interconnection and Timing of Digital Circuits
CMOS Circuits Tutorial