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 PlainSHT1x contains a set of additional functions which perform advanced tasks such as checking power supply voltage: uint8_t PlainSHT1x::Battery() { uint8_t regContent = ReadRegister(); return ((regContent >> 6) & 0×01); }; … changing the resolution of measurements: void PlainSHT1x::Resolution(uint8_t state) { _resolution = state; uint8_t regContent = ReadRegister(); if (state) { regContent |= [...]
Part 1, 2, 3 The trickiest part of the sensor is its communication protocol. SENSIRION makes it clear from the beginning in the SHT1x data sheet: “The serial interface of the SHTxx is optimized for sensor readout and power consumption and is not compatible with I2C interfaces”. Data is read or written from/to the sensor thanks to 9 [...]
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, 5 After some new experiments on sound analysis, I used a different design for the microphone amplifying section, that I am happy to share with you (From the statistics of Arduinoos, I know that sound capture is a topic of major interest for many of you). Here is the schematics that I shall explain [...]
Part 1, 2, 3, 4, 5, 6 Here is an amazingly simple and effective application that applies the photovoltaic properties of LEDs. Two identical extremly simple Arduino platforms are used. Each of them is fitted with a LED and a pushbuton. In idle mode, the LED is biased in photo sensing mode, waiting for potential signal. Each time the push [...]
Part 1, 2, 3, 4, 5, 6 And now comes an example of an effective use of the I/O LEDs: single LED communication. the next coming videos illustrate the operation of a simple but yet full of promises application. Two identical modules are used, each of them using an Arduino Nano, a LED and a switch. When pressing the switch, the sketch will [...]
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 [...]