LEDs are a rapidly maturing technology that is making big inroads into the conventional lighting market. However, it is not the only new lighting technology in town. Organic LEDs (OLEDs) are now being considered as an option for some architectural lighting applications after gaining popularity as a display technology offering vibrant color without backlighting. OLEDs […]
OLEDs Move Closer to Mainstream Lighting Read More »
Analog Device’s AD8232 is an integrated signal conditioning block for ECG and other biopotential measurement applications. It is designed to extract, amplify, and filter small biopotential signals in the presence of noisy conditions, such as those created by motion or remote electrode placement. This design allows for an ultralow power analog-to-digital converter or an embedded
Single-lead Heart Rate Monitor Analog Front End Read More »
I hate articles titled “Ten … myths debunked.” I would have to start by listing a round number of clumsily worded claims by the non-feedback camp who probably never said any such thing, and juxtapose some simplified school-book explanations to put them right. And after shooting, flaying and roasting alive my straw men and generally
Negative feedback in audio amplifiers Read More »
This project was my take on a DIY visual impairment aid that uses haptic and sound feedback. Basically it uses a distance sensor to measure how far objects are from it and then it beeps/vibrates accordingly (far away is slow vibrate/long beep delay and close up is fast vibrate/quick beeps). Real quick I’d like to
VIA (Visual Impairment Aid) Read More »
Electromagnetic door locks can be very easily implemented to almost any entry or security system. We got used, that electromagnetic locks are a common part of entry doors to various buildings and offices. There are several types of such locks on a market, the most often they are a part of a doorframe. Each type
Lock it without a key Read More »
Have you ever heard of TFT LCD screens? They are great ways to display information from your Arduino, or display pictures. The Arduino team just released an official TFT LCD screen with their new Robot at Maker Faire 2013. It’s very easy to get started with!! This tutorial will show you how to get the
Your Image on an Arduino! – TFT LCD Screen Guide Read More »
I and my friends like to have fun in summer. We like to fool around with music when we are camping. To make those parties more likely to professional ones I have made portable 9V LED strobe. For my surprise it really gives a big effect. I hope you will like it! Here is the
DIY portable LED strobe Read More »
In this article I’ll try to show how to use an MSP430 with a DAC7564. This is probably the first from a series of articles showing different devices I plan to use in a project. The DAC7564 The DAC7564 is a low-power, voltage-output, four-channel, 12-bit digital-to-analog converter (DAC). The device includes a 2.5V, 2ppm/°C internal
Interfacing the DAC7564 to an MSP430 Read More »
Recently I needed to actually “see” a current waveform in the 100 uA to 5 mA range with at least a couple MHz bandwidth. This extremely expensive probe would have been perfect, but instead I built something similar for about $30 using the amazing Analog Devices AD8428 amplifier. Click “Read more” for details and a
Measuring microamps & milliamps at 3 MHz bandwidth Read More »
This weeks PAW is just a breakout board for micro SD cards. There’s a number of boards like this on the market already, but they are kinda expensive and I like doing my own stuff, so here it is… 🙂 The board have a LDO that supplies the SD card with 3.3 volts and there
SD Card Breakout for Breadboards Read More »
