http://www.e-dsp.com Digital Signal Processing, DSP, FPGA, ADC, DAC, Analog, Electronic, ATMEL, AVR, MICROCHIP, PIC, ATMega Sun, 18 Feb 2007 16:48:28 +0000 http://backend.userland.com/rss092 en I haven't been writing for some time and I am sorry for it. During the summer I got a three week scholarship in Germany! I had a great time there, btw. I would like to greet those people now! Finally the exams are over and I wanted to share one ... http://www.e-dsp.com/how-to-build-your-own-heart-monitoring-device-a-simple-ecg/ I tried to make my first professional PCB (Printed Circuit Board) and test a manufacturer for you. I used EAGLE Layout Editor 4.16 to design this PCB board, before this I used to make manually my own PCB (you don't want to see them :p). This PCB was made for the ... http://www.e-dsp.com/how-to-manufacture-your-own-pcb-cheaply/ Some time has passed since I wrote something for the site but it is really not my fault. The classes have started again and as always there is a great number of assignments and homework. However, I will stop bothering you with my problems, let’s get down to work. Today ... http://www.e-dsp.com/how-to-build-your-own-wireless-receiver-and-transmitter-device-create-rf-in-your-embedded-application/ Sometimes we have a need to measure the temperature of a room, of an object or just maybe a terrarium; so it never gets too hot or too cold for your hamster and it warns the system to turn on a cold or hot fan (ok just a bit Sci-Fi) ... http://www.e-dsp.com/how-to-measure-temperature-with-the-dallas-maxim-ds1820-sensor/ One of the visitors of e-dsp site sent me an e-mail asking me if I could create a project where we use the LCD display from a cell phone. At first I thought it was a great idea but I already ordered another graphic LCD display to play with it. ... http://www.e-dsp.com/controlling-a-color-graphic-lcd-epson-s1d15g10-controller-with-an-atmel-avr-atmega32l/ Almost a month has passed since I have created the Function Generator; sorry for that, it is not my fault. I had final exams so I had to learn. Finally I have holidays, so something should be going on the site. However, let’s get to the project. Today you can ... http://www.e-dsp.com/how-to-use-a-lcd-with-your-electronic-devices/ Since we all need sometimes a simple signal generator just to test an amplifier or some circuit we just made. If you did not know, you can use your computer for that. It is just required to have a sound card. We created a little software application for you to ... http://www.e-dsp.com/software-functionsignal-generator/ You have some output source (for example an analog sensor) where the voltage is very low, just few mV (millivolts), and you would like to measure the output with your ADC (Analog to Digital converter) and with the results do some calculations with your MCU (Microcontroller) or some other device. ... http://www.e-dsp.com/why-do-we-need-amplifiers-how-to-build-a-simple-one-lm-741/ I will try to explain you what Fourier coefficients are in an as simple as possible way. It will require you to have some basic knowledge on how to solve integrals because we will use them! I will give my best to explain it to you, please notify me in ... http://www.e-dsp.com/what-are-fourier-coefficients-and-how-to-calculate-them/ This is going to be my first introduction to Fourier series. It should teach you some basics so you can follow some other tutorials on my site. In this tutorial it is required that you already know the elementary trigonometric functions, sine and cosine. I will give my best to ... http://www.e-dsp.com/8/