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9 Feb 2011

Here’s a circuit by Joe Desbonnet’s Random Tech Stuff that’s designed to monitor battery voltage. It uses one resistor, one diode (or LED), one microcontroller ADC input and one digital output. [via]

PIC 12F675 battery monitor using a diode/LED and resistor – [Link]

8 Feb 2011

This is a multifunction bench test instrument built using an Atmega128 microcontroller and incorporate a lot of functions like voltmeter, ammeter, logic analyzer, frequency generator, frequency counter and also provides regulated DC power supply.

A multifunction digital meter using Atmega128 – [Link]

5 Feb 2011

Perhaps one of the most entertaining things to do with an embedded microcontroller is to get it to actually move something. Three very popular devices used to “make things move” include dc motors, RC servos, and stepper motors. This lab session will look at how you can interface a dc motor to a PIC microcontroller.

DC motor interfacing to PICMicro – [Link]

3 Feb 2011

ian writes:

Programming microcontrollers isn’t hard. Building a programmer makes a great first electronics project. The goal of this instructable is to explain the simple ‘in circuit serial programming’ method used with Microchip PICs.

Understanding ICSP for PIC Microcontrollers – [Link]

2 Feb 2011

ZF did a review of the FTDI Vinculum board: [via]

I just got hold of FTDI chip’s new Vinculo developing platform, so here’s a quick review for you!

Vinculo is a 25€ development platform for the FTDI Vinculum II (VNC2) dual USB host/slave microcontroller. The board design has been copied from Arduino, and they even advertise it as Arduino-inspired and Arduino shield compatible. FTDI seems to have realized the potential that comes when having a large hobbyist userbase…

Vinculo Arduino clone with USB slave – [Link]

24 Jan 2011

Fabien Royer writes:

Programming AVR microcontrollers using ISP is a simple process when the target is on a board exposing a 6 or 10-pin ISP header. But what if you have different types of AVR chips? Their SPI pins (VCC, GND, MOSI, MISO, SCK) aren’t always in the same locations.

Instead of buying different types of target boards or buying an expensive generic programmer, I built one using a small breadboard, a Universal 28 pin ZIF DIP socket and 6 male-male hookup wires that I connected to my USBtinyISP programmer.

Build a cheap, flexible AVR microcontroller programming target board – [Link]

12 Jan 2011

This article explains some of the updates to some of the most mature microcontroller architectures. [via]

60% of all CPUs and MPUs are 8 bits; 16 bitters account for 15% of the market, with the much ballyhooed 32 bit machines bringing up the rear of the market at a paltry 9%. According to a 2001 survey, our 43% of our readers use PICmicro parts, 55% use 8051/52/251/AVR, 36% go for Motorola’s 68XX family and Zilog’s Z8/Z80/Z180 devices account for about 15%. These numbers total more than 100% as some folks used more than one processor in that year. In the 16 bit world 41% use 8086/186/96/196 devices and 21% employ the 68HC12/16.

8 and 16 Bit Microcontrollers – [Link]

11 Jan 2011

Embedded-Lab has launched a tutorial on interfacing a DC motor with a PIC microcontroller. It describes about the various operating modes of a dc motor and how to control them with a microcontroller. The tutorial also describes a classical H-bridge circuit using transistors.

Tutorial: DC motor interfacing to Microcontrollers - [Link]

17 Dec 2010

This article discuss about mcu software and what to do when your code grows in size. We should follow some simple rules that makes microcontroller programming more fun than scratching along. Check details on the link below.

When your project grows bigger – [Link]

13 Dec 2010

Pinguino is an Arduino-like board based on a PIC Microcontroller. The goal of this project is to build an integrated IDE easy to use on LINUX, WINDOWS and MAC OS X. This is a simple 40 pin PIC development board as described in RadCom for November 2009. It is designed for a PIC18F4550, but it will work with other 40 pin PICs like the PIC16F877A. It has no bells & whistles attached. No buttons, LED, LCD ICSP etc. All of the PIC pins are easily accessible so that you can add any features you need. This board has been tested with the Vasco PUF and the Pinguino USB bootloaders.

PIC18F4550 Pinguino Development Board – [Link]





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