Author Archives: R-B

New 8-bit PIC microcontrollers feature advanced analog and digital integration

There is a good news for PIC fans. Microchip Technology, Inc. has recently announced the expansion of its 8-bit enhanced Mid-range core microcontroller (MCU) family to include advanced analog and digital integration, such as 12-bit A/D converter, 8-bit DAC, Op-Amps with Rail-to-Rail input/output, and high-performance Rail-to-Rail comparators.

Key peripherals in the new 8-bit PIC MCUs

CHANDLER, Ariz., March 26, 2012 [NASDAQ:  MCHP] — Microchip Technology Inc., a leading provider of microcontroller, analog and Flash-IP solutions, today announced from DESIGN West in San Jose  the expansion of its 8-bit PIC16F(LF)178X enhanced Mid-range core microcontroller (MCU) family to include advanced analog and integrated communication peripherals, such as on-chip 12-bit Analog-to-Digital Converters (ADCs), 8-bit Digital-to-Analog Converters (DACs), operational amplifiers, and high-speed comparators, along with EUSART (including LIN), I2C™ and SPI interface peripherals.  The MCUs also feature the industry’s best level of advanced PWM control and accuracy via the new Programmable Switch-Mode Controllers (PSMCs).  This combination of features enables higher efficiency and performance, along with cost and space reductions in applications such as closed-loop control in power supplies, and lighting.  The “LF” versions of the MCUs feature eXtreme Low Power Technology, for active and sleep currents of just 32 µA/MHz and 50 nA, respectively, helping to extend battery life and reduce standby current consumption.  Low power consumption and advanced analog and digital integration make the general-purpose PIC16F(LF)178X MCUs ideal for LED lighting, battery management, digital power supply, motor control and other applications.

More details of the story can be found here.

Making a digital capacitance meter using microcontroller

Capacitors are one of the most common passive electrical components that are extensively used in all kinds of electronic circuits. In this project, we will discuss a technique of building a digital capacitance meter using a PIC microcontroller. This project can measure capacitance values from 1 nF to 99 ?F, with a resolution of 1 nF. The technique is based on measuring the time elapsed when a capacitor is charged to a known voltage through a series resistor. The microcontroller used in this project is PIC16F628A.

Capacitance meter

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TENMA 72-8155 digital LCR meter

An LCR meter is an extremely useful device for measuring three basic impedance elements, namely, Inductance (L), Capacitance (C), and Resistance (R). Recently, I got a TENMA 72-8155 digital LCR meter from Newark for review. I was very excited to receive it as I didn’t have a dedicated LCR meter in my home lab. Here’s my quick review of this product.

TENMA 72-8155 digital LCR meter

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Reviewing the iCA05 Graphic LCD development kit from iCircuit Technologies

The Graphical LCD (GLCD) displays provide more flexibility in presenting data, as compared to standard character-based LCDs. Owing to a significant drop in price lately, GLCDs have become more popular these days in the hackers’ and DIY worlds. If you are planning on doing an embedded microcontroller project including a graphical LCD display, you might be interested in this PIC-based GLCD development kit from iCircuit Technologies. This decently priced development kit will help you to get started quickly with your project. Here’s a brief review of the kit.

PIC-based GLCD development kit from iCircuit Technologies

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Digilent announces the 8th annual US regional design contest

Digilent has just announced the 8th annual US regional Digilent Design Contest, to be held on May 6-7, 2012 in conjunction with the IEEE EIT conference in Indianapolis. Digilent Design Contests are engineering contests open to all students enrolled in any educational institution in that region. Students are challenged to create an original project using Digilent boards, whether FPGA boards featuring state-of-the-art Xilinx FPGAs, microcontroller boards featuring Microchip microcontrollers, or chipKIT boards based on the Arduino development environment.

Digilent Design Contest 2012 (US region)

Contest enrollment begins on January 25th. Project presentations and judging will take place on May 6th, with the winners to be announced on May 7th. Attendees of the EIT Conference are invited to attend the contest. Judges will be looking for creativity, feasibility, and originality, and judging positions are still available. Please contact Digilent if you are interested in participating as a guest judge for the contest.

The US contest is one of several 2012 regional contests, including China, the EU, and India. Digilent awards generous cash prizes to the top finishers and donates the hardware used by all contestants.

The 2011 Worldwide Digilent Design Contest Finals were held last September in conjunction with the FPGAWorld conference in Munich, Germany. Participants included 16 teams from China, India, Romania, Switzerland, and the US. Winning projects included a smart shopping cart, a bomb disposal robot, and a GPS-enabled rover.

Guidelines for the Digilent Design Contests will be available at http://www.digilentinc.com/events/ddc2012/  or http://www.facebook.com/Digilent?sk=app_244940582228984.

Projects from all Digilent Design Contests, including documentation, are available at http://digilentinc.com/NavTop/Showcase.cfm.

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