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) 
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64 comments February 17th, 2006
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. However I gave it a try, I ordered the display that is used in some of the Nokia models, and I am not sure in which one. (more…)
85 comments February 14th, 2006
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 rarely see an electronic device without a LCD display, even new fridges have it. It is pretty useful to know how to use some with your device. I will show you how to connect a LCD with a Microcontroller. 
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72 comments February 14th, 2006
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 generate a signal of different frequency and amplitude. (more…)
65 comments February 14th, 2006
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. The values the ADC gives you are all almost the same because its bit resolution is too small to show you any differences between the different states of the sensor. (more…)
39 comments February 14th, 2006
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 case I made some mistakes or you don’t understand something. I would be happy if you leave some comments regarding this tutorial. (more…)
38 comments February 14th, 2006
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 explain it to you, please notify me in case I make some mistakes or you don’t understand something. I would be happy if you leave some comments regarding this tutorial. (more…)
125 comments February 14th, 2006