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Sonómetros Archives - Contaminación acústica. Dashboard - thethings.iO - THE Internet of Things cloud solution. Dynamic Knobs Example Which Updates Value Every 3 Seconds (knob.js) Building MongoDB Into Your Internet of Things: A Tutorial. With the Internet of Things (IoT) poised to start pouring data into your organization, we thought it would be a good time to show you how you can bring that data into MongoDB so you can start analyzing it.

Building MongoDB Into Your Internet of Things: A Tutorial

In this article, we're going to build a simple data acquisition device, use a common IoT protocol to efficiently get its data to a server, and then we’ll show how to plug into that server and turn the acquired data into a time series document in a MongoDB collection. More specifically we’re using a standard protocol, MQTT, for moving the data from an Arduino-based temperature sensor to a message broker and then use just over 32 lines of JavaScript to move that data into MongoDB. And we’ll show you how you can put this together yourself.

Software for sound level / decibel data logging. I managed to sort a recording meter .... ... 20a25bdfd0 It has a USB connection and Windows software.

Software for sound level / decibel data logging

Logs about 2000 readings. So I let it run and sniffed the USB connection. Got enough info to know how to make it start regurgitating and prompt it to keep going until memory was all done. Problem was I didn't get the commands to start/stop recording, clear memory, set parameters or any of that. Index. Our senior design project is a device that measures sound pressure level (SPL).


SPL is a measure of air pressure change caused by a sound wave. SPL is measured in decibels and is calculated by the following equation, where px is the pressure level and pref is 20 µPa. The motivation behind this project is that hearing loss becomes a concern in the presence of large SPLs for extended periods of time. The main goals for the design were to be accurate over a wide dynamic range (very quiet and very loud sounds), portable (battery powered), inexpensive, and easy to use. For our design we chose to use the Silicon Labs C8051F320 microcontroller. Figure 1 - Block Diagram I. Microphone and ADC The first part of the signal chain is the microphone itself. The ADC on the PIC has a default input range equal to the supply rails, which in our case are 0-3.3 volts.

First Preamp Stage (Debalancing Amplifier and Fixed-Gain Inverting Amplifier) Davide Gironi: A simple Sound Pressure Level Meter (SPL) dB audio meter using AVR ATmega. Interact With the Web in Real-time Using Arduino, Firebase and Angular.js — Code Zen. Interact With the Web in Real-time Using Arduino, Firebase and Angular.js This simple project is meant to be a hybrid introduction to connecting and manipulating data over the internet with Arduino, Node, Angular and Firebase.

Interact With the Web in Real-time Using Arduino, Firebase and Angular.js — Code Zen

UPDATE: Check out @Moycs777 terrific web app based on this example hosted on Firebase. COMMENTS: Please do contribute with your comments. I’d like to know how you like (or don’t like) it. The Internet of Things is nothing new. Embedding Angular in the physical world. How to prototype your $3.2 billion dollar business on Angular in 20 minutes Today’s article is based upon the ngConf talk presented January 2014.

Embedding Angular in the physical world

See the video at the end of this article We’re flexing our imagination and extending the reach of our Angular application deep into hardware. Cosm alternatives to record sensor measurements. By mvuilleu, in Reviews and Measures, may 22,2013.

Cosm alternatives to record sensor measurements

A few days ago, our beloved Cosm Beta service that we used to recommend for real-time graphs from your Yoctopuce sensors, has changed its usage terms. Renamed Xively, the web site is now focusing on revenue-generating services. Unfortunately, some essential features that we have been using, such as the ability to choose the display time range on a graph, have disappeared. Freeboard - Dashboards For the Internet Of Things. Zetta - An API-First Internet of Things (IoT) Platform - Free and Open Source Software. Open source HTML5 Charts for your website. jQuery Knob demo. Currentcost « knolleary.

I spoke at Homecamp recently about how an ambient orb could be used to monitor home energy usage.

currentcost « knolleary

I’ve finally gotten around to putting some of it into practice so thought I would share some of the details of the setup as well as some more of my thoughts on the subject. There are three key pieces of hardware in use. The Viglen MPC-L is the heart of the system. As I’ve mentioned previously, this is a low powered linux box running Ubuntu. The CurrentCost meter is connected to the MPC over USB-serial and my trusty arduino acts as an integration point for homebrew toys – including my ambient orb. The MPC is running a Really Small Message Broker (RSMB). Another piece of perl (““) is subscribed to the house/orb topic. Publishing Realtime Location with the Android MapBox API - PubNub. We left off by building our realtime Android location data broadcaster that detects and streams location data.

Publishing Realtime Location with the Android MapBox API - PubNub

XivelyJS - Xively Javascript Library - Pete Correia. All you need to interact with Xively lightweight~ 2kb gzipped completewith all API methods extendedmethods for ease of use Download Include the file.

XivelyJS - Xively Javascript Library - Pete Correia

Thinkbig Lab. Build Realtime Apps & Take Websockets To The Next Level.