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The Protocol Analyzer is a small tool that can catch, analyze and decode “slow” pulse based protocols. Typical examples are IR-Remotes or RF-Remotes. It uses the microphone input to read the signals. Since this is almost always available with drivers across operating systems, this tool works without any specific drivers on Windows, Linux and OSX. [via]
Protocol Analyzer can decode a number of standard protocols such as the infrared protocols: RC5, RC6, Pioneer, JVC, Nexa,X10, Pronto (See here for details of which) but the primary task of Protocol Analyzer is to aid in decoding new protocols. It behaves like a combination of an oscilloscope and a logic analyzer specifically aimed at analyzing digital protocols via the microphone input.
Protocol analyzer for IR and RF - [Link]
Don’t let the size fool you because it’s a powerful fully featured mixed signal test and measurement system, not just another little logic analyzer!
Pocket Analyzer is a Mixed Signal Oscilloscope with a built-in Logic Protocol Analyzer, Waveform, Clock & Pattern Generator, Spectrum Analyzer and Chart Recorder all in one tiny USB Powered package.
BITSCOPE – World’s Smallest Mixed Signal Scope - [Link]
Simple spectrum analyzer using the MSGEQ7 IC. The 5 LEDs represent different parts of the audio spectrum. The brightness of each LED indicates the strength of that piece of the spectrum. Music provided by GarageBand ’11. [via]
MSGEQ7 Simple Spectrum Analyzer - [Link]
Pittsford, NY, USA: Saelig Company, Inc. has introduced WiPry-Combo – the worldʼs first dynamic power meter and spectrum analyzer accessory for the iPad, iPod Touch, and iPhone – offering a modern touch interface not available on PC-based instruments. WiPry-Combo turns an iOS device into an ultraportable spectrum analyzer and dynamic power meter. WiPry-Combo brings RF power measurements to a graphical interface to show RF waveforms like an oscilloscope – instead of showing voltage, RF amplitude is displayed on an iOS portable device. Actual power output can be triggered, captured, and recorded for protocol verification or for troubleshooting wireless devices. Data is collected at up to 12 MSa/s, allowing analysis and verification of the smallest protocol level on/off times. WiPry-Combo offers data logging in csv format, while screenshot results can be instantly emailed via the iOS host phone.
In its Spectrum Analyzer mode, WiPry-Combo offers a practical solution for identifying interference or open channels in the 2.4GHz ISM band, or for identifying unauthorized WiFi access points. Operating in the frequency range: 2.400 to 2.495 GHz, it measures signals from -40dBm to +20dBm with an amplitude resolution of 2.0dBm and a bandwidth resolution of 1MHz. The band sweep time is 200ms. Read the rest of this entry »
ostan.cz writes:
IR protocol analyzer is a universal application for automatic decoding several types of infrared remote control protocol packets. The application uses microphone input of a soundcard to capture infrared signal from a remote control. As a consequence, the hardware receiver is minimalistic and easy to build; just plug a phototransistor to input of your soundcard, that’s all hardware you need.
Application processes IR signal from a remote control and compares it with its own database of known protocols. When a match is found, packet is decoded and its characteristic is displayed to user (including protocol name, description, decoded data and graph with timing).
IR protocol analyzer - [Link]
octal writes: Pretty impressive video review of Logic/ Logic16 (shows the insides as well) [via]
In this episode Shahriar takes a look inside the “Logic”, “Logic16″ and USBee SX which were reviewed in the previous episode. The PCBs get a closeup inspection along with some insight into the design of these products.
Saleae Logic16 logic analyzer INSIDE and review – [Link]
Acoustic spectrum analyzer for HD44780 LCD. This is version 2 of this device, version 1 was popular and you asked for some effects and options, so here it is 
Acoustic spectrum analyzer – V2 - [Link]
hobbydebraj writes:
This is a project for viewing the frequency spectrum of input signal using dsPIC. The hardware uses the following:
1. dsPIC30F4011.
2. Opamp (any one, like LM358, TL084).
3. Power supply.
dsPIC based Spectrum Analyzer – [Link]
Paul Asselin says:
I wanted to know how much time I was spending under the shower each day, especially in these environmentally conscious times. The benefits of that are that I can perhaps save some money on the water bills and also study the effect of temperature on my showering time.
So Paul designed this Arduino shower timer analyzer. He considered using a water flow meter, but opted instead for using an RFID reader and a Real Time Clock (RTC). He waives his RFID card before the reader upon entering the shower which starts the timer. When he leaves the RFID reader again detects the card and stops the time. The duration is then uploaded to the Thingspeak website’s API section via an ethernet shield. [via]
This was Paul’s entry into the Thingspeak contest.
Arduino shower time analyzer – [Link]
Va7sa designed this RF analyzer as his entry in the Renesas RX design contest. He writes: [via]
The NimbleSig III RF Analyzer is a compact, relatively inexpensive instrumentation cluster intended for analyzing the transmission characteristics of RF circuits designed to operate within the frequency range of 200 KHz to 200 MHz.
The analyzer is capable of generating a pair of frequency agile RF signals with digital accuracy. It has measurement capabilities for gain/loss, phase shift and low level RF power. A tracking generator sweep system mode provides a high dynamic range swept frequency display of circuit amplitude response characteristics. A spectrum display mode permits the viewing of signals in the frequency domain.
The RX62N RDK was a solid choice for the controller. It provides control logic and comms for the various RF modules and for the human-machine interface, 4.3″ touch screen SLCD display. The powerful RX62N RDK with its abundance of connectivity options and supporting peripheral devices provides a paved road for a number of planned enhancements for this instrument.
For an exhaustive description of this project, download this 58 page PDF.
NimbleSig III RF analyzer using Renesas RX62N – [Link]
