Ponyprog Circuit for AVR & PIC16F84

Comments: All resistors are 1/4W.The circuit is powered by 9...15V DC or AC. When In Circuit Programming (ISP) connectors are used, is possible the programmer to be powered from target’s power source. Diodes D2 and D6 protect the regulator LM7805, when target’s power is used. ' XTAL JUMP ' is used to cut XTAL when the AVR has internal RC oscillator enabled. 'FAMILY JUMP' is used to select which ATMEL’s fami ...

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Microcontroller Tutorial 4/5: Creating a Microcontroller Circuit Board

We are now in the fourth part of the microcontroller tutorial. We have a microcontroller circuit diagram ready. It’s time to make a circuit board. I love this part. This is the “magical” step that takes the idea we started with and turns it into something real. But let’s recap. So far we have learned: Part 1: What is a microcontroller? Part 2: How to choose your microcontroller? Part 3: How to design a circ ...

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microcontroller based projects circuit free

Analogue electronics, digital circuits and microcontrollers simulation, all in one. Another free Espresso-based minimisation tool. PLD and FPGA project flow Electronics circuit diagrams and projects based on microcontroller. 8051-BASED EEPROM MICROCONTROLLERS. HUM-FREE BATTERY ELIMINATOR Please I need a circuit diagram of a speed checker on highway with full project report write up, and all the construction ...

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PIC microcontroller Beginner’s guide: Basic connection circuit

What is a pic microcontroller? The PIC microcontroller is a low cost ‘computers on a chip’ manufactured by Microchip. They allow electronic designers and hobbyists impart intelligence and logic to a single chip for special purpose applications and products. The PIC microcontroller programming is done using the popular software ‘Mikro C’. This powerful yet easy to program into a 40-pin package is upwards com ...

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Maxim claims Class D amps will simplify audio design

Description The MAX98355A/MAX98355B are digital pulse-code modulation (PCM) input Class D power amplifiers that provide Class AB audio performance with Class D efficiency. These ICs offer five selectable gain settings (3dB, 6dB, 9dB, 12dB, and 15dB) set by a single gain-select input (GAIN). The digital audio interface is highly flexible with the MAX98355A supporting I²S data and the MAX98355B supporting lef ...

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Basic PIC circuit is not working

I have just begun in the world of micro-controllers, and the first micro-controller. I chose to work with was the PIC from Microchip. The PIC I am using is the PIC16F877A. I am using MPLAP IDE and HI-TECH C. I am trying to make an extremely simple program that turns on an LED. This is the code I am using: #include<htc.h> #define _XTAL_FREQ 8000000 __CONFIG(UNPROTECT & PWRTDIS & WDTDIS & HS ...

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Interfacing DS1307 to PIC Microcontroller with C code and Circuit Diagram

This tutorial will help you to interface DS1307 RTC with PIC16F877 Microcontroller. The project is compiled in CCS Compiler and simulated with Proteus. The Real Time Clock is interfaced with PIC controller via I2C. I2C is a 2 wire communication protocol. I2C is used for moving data from one device to another simply and quickly. It is a serial, synchronous, Bi-Directional protocol, the data is synchronised   ...

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Iterated-map circuit creates chaos

the Design Idea circuit shown below is a simple implementation of an iterated unimodal map, reminiscent of the logistic or Verhulst map encountered in the study of nonlinear dynamics. It is useful to show chaotic discrete-time dynamics to students, or as a random number generator. Specifically, the circuit implements: Vk+1 = rF(Vk), where F is a nonlinear unimodal function (a “bump”), implemented by the cir ...

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TI adds spatial audio to tablet computers

Texas Instruments' LM48901 is a quad Class D amplifier that utilizes Texas Instruments’ proprietary spatial sound processor to create an enhanced sound stage for portable multimedia devices. The Class D output stages feature Texas Instruments’ edge rate control (ERC) PWM architecture that significantly reduces RF emissions while preserving audio quality and efficiency. The LM48901’s flexible I²S interface i ...

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ADI squeezes quad DAC into small 3mm x 3mm package

The AD5686, a member of the nanoDAC+™ family is a low power, quad, 16-bit buffered voltage output DAC. The device includes a gain select pin giving a full-scale output of 0V to VREF (gain = 1) or 0V to 2VREF (gain = 2). The device operates from a single 2.7 V to 5.5 V supply, is guaranteed monotonic by design, and exhibits less than 0.1% FSR gain error and 1.5 mV offset error performance. The device is avai ...

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