Archive for April 2012

5A Lab Power Supply With Digital Readout

I got a used 250VA power transformer that was removed from equipment a couple of weeks ago. The transformer has a dual 10V AC output and a few auxiliary voltage outputs. The 10V winding is rated at 10A, I thought it would be perfect for a high current power supply project. Continue reading ‘5A Lab Power Supply With Digital Readout’ »

AD7705/AD7706 Library Revisited

About a year ago, I wrote a simple library for interfacing AD7705/AD7706 with Arduino. The library works, but it requires some decent knowledge of the underlying chip, which had made it somewhat difficult to use. Most issues users reported can be resolved by adjusting the timing in user code, but I admit that it is somewhat difficult for users who are not familiar with the chip. For a library, I should have made it easier to use to begin with. So, I decided to add a few long-awaited features and hopefully these tweaks will make the library easier to use. Continue reading ‘AD7705/AD7706 Library Revisited’ »

Interfacing LTC6904 With Arduino

LTC6904 is a programmable oscillator which is capable of generating frequencies from 1kHz to 68MHz. The oscillation frequency can be changed via the I2C interface and thus makes it very easy to interfacing with MCUs. Continue reading ‘Interfacing LTC6904 With Arduino’ »

Using MSP430 LaunchPad As Programmer

In this blog post, I will show you how to program an MSP430G2 series chip outside the MSP430 LaunchPad (MSP-EXP430G2) development board using the Launchpad itself as a programmer. This is useful for doing in-system programming without having to swap the target chip in and out of the LaunchPad. Continue reading ‘Using MSP430 LaunchPad As Programmer’ »