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Category Archives: Electronics

A simple voice detector circuit

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Spread the word87       87SharesVoice detector can find it’s use in voice-activated circuits. For example, triggering a transmitter or enabling a speech processor and so on. At the end of this blog post, we will look at one such application. A voice detector is a circuit which


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RF Pulse generation with RF switch

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Spread the word34       34SharesRemember the previous post where we generated PWM? We are going to use the PWM output from the TivaC microcontroller and drive an RF switch. I will be using the Minicircuits HSWA2-63DR+ SP2T switch to generate pulsed RF output. Correspondingly, A simple SP1T


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tiva pwm tutorial

Generating PWM on Tiva C connected launchpad (TM4C1294)

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Spread the word43       43SharesTexas Instrument’s Tiva C connected launchpad is a really powerful Cortex M4 microcontroller board. The possibilities with this chip are endless. In this post, we will be generating PWM output on one of the GPIO pins of TM4C1294 microcontroller. A simple PWM output


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Getting VHF station up and running

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Spread the word21       21SharesDays after clearing the ASOC examination, I finally got an official callsign – VU3XEN. The callsign would be useless if I have no means of communication. This post is going to be really short where I would be describing the process of getting


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Fabricated dual directional coupler.

Home brewing a simple antenna analyzer – Part 1

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Spread the word1       1ShareA primary tasks of an antenna analyzer is determining how good of a match an antenna has with the transmitter. One of the ways of determining that is by looking at the reflected power from the antenna port. In simple words, an unmatched impedance


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DRA818V pcb

DRA818V VHF band transceiver – Part 1

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Spread the word1       1ShareNecessity to stay connected with others is growing by the day. In cases when mobile network is out of reach and a message needs to be relayed or received, ham radio can prove to be quite helpful. Let us not get into the


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LNA silicon images

Radar on a chip – Shrinking Radars!

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Spread the word13       13SharesWhenever we hear the word “Radar”, a picture comes to mind with a rotating line across a circular display with a few objects moving here and there. This is a general perception of radars that we have after watching a few Hollywood movies.


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ESP8266 MSP430 Launchpad

Getting ESP8266 work with MSP430 Launchpad

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Spread the word2       2Shares So, I bought a couple of ESP8266-01 modules to check out what the hype was all about. To all, those who do not know what an ESP8266 is, here is a little insight. Spread the word2       2Shares


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orcad 16.6 full download

Cadence OrCAD 16.6 full download – FREE

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Spread the word2       2SharesNOW GET OrCAD 17.2 Cadence OrCAD 16.6 version is the new version of OrCAD schematic and PCB designing tool with lot of improvements. We all know that since the OrCAD 16.3 version, there has been no proper crack to use OrCAD. Do not


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ECG front end circuit (BUY NOW)

Android based wireless ECG monitoring (UPDATED)

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Spread the word61       61SharesFrom quite some time I had been busy trying to perfect my real time ECG monitoring system. I was able to look at my ECG after a tedious task of recording it via sound card and then processing it in MATLAB. If you


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