Part 1, 2, 3 This post contains an application of the data acquisition and analysis from the PlainDSP library. The credit of the idea goes to Preston who is currently busy at deadening his truck. In his mail of PlainDSP library request, Preston explained to me his current project, and I found it fun and for some reasons, it [...]
Part 1, 2, 3 The next lines of code illustrate how PlainDSP simplifies the combination of data acquisition and data analysis. You no longer need to worry about the vectors of data. PlainDSP creates dynamically and transparently the required vectors. On the other hand you must keep in mind that they exist and take 8 times the number [...]
Part 1, 2, 3 Among the most popular subjects covered in this blog, FFT is far ahead any other subject (22%!), followed by data acquisition functions. I got many, many requests for PlainFFT and PlainADC libraries and thanks to your explicit messages, I have a quite good understanding of who is using them and for which type of [...]
Part 1, 2, 3 I introduced the temperature and humidity sensors from SENSRION a couple a months ago [link to this post], and I recently decided to use one of them for building a sensor which would aggregate multiple physical measurements. For the sake of saving time, I ordered the PARALAX module which is handy and has a [...]
Part 1, 2, 3, 4 FFT posts are the far most visited pages from Arduinoos, and MicroELFEMF is one of the simplest and cheapest example of implementing this complex function. I got many requests and questions related to this subject, which drove me to publish some more explanations. Understanding frequency bins is not trivial and I encourage you [...]
Part 1, 2 RIGOL 1052E DSO review In the 80s, I have been using the top most fancy oscilloscopes from HP. Unfortunaltely, they were heavy, mine was an analog one, without memory, and they were expensive for private use. In the 90s and Y2Ks, I have been using a basic ITT analog scope: forget it. And then [...]
Part 1, 2, 3, 4, 5, 6 Here is a new version of the sensing LED. The sensing LED is turned on almost all the time, with very short periods of time during which it is biased as a photo LED. The measuring time is so short that it is almost impossible to observe the flickering effect. Approaching a source of [...]
Part 1, 2, 3, 4, 5, 6 Additional works on I/O LED brought me to publish the next coming posts. Firstly, I observed that amongst the various LEDs tested from my stock, some were simply not suitable for I/O operation, while the high brightness red LEDs where performing optimally. Here is an illustration of the simplistic hardware that you may use [...]
Part 1, 2, 3, 4 This post deals with the sensing antenna which can increase the sensitivity of the MicroELFEMF application One of the difficulties posed when sensing ELF frequencies is antenna size. This is because the antenna must be at least a substantial fraction of the size of the wavelength of the frequency of the EM waves. Simply [...]
Part 1, 2, 3, 4 The proposed application features a few ideas which may be reused for all sorts of applications. As usual, the idea is to build the most exciting Arduino application with the least additional components. In this sense, MicroELFEMF is a serious challenger, as it requires… no additional components! What this application will do is to [...]