IMU tag v1.0 – Bluetooth / SD-card data logger

The IMU tag v1.0 is a small, low powered, inertial/magnetic data logger capable of logging sensor data to an on-board micro SD card and streaming sensor data directly to a computer in real-time via Bluetooth. The device was originally developed to enable the ambulatory monitoring of a patient’s motion for a medical research project. See www.x-io.co.uk for info, downloads, purchasing and to contact me. All questions and comments are welcome!

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Live GPS Data Logger

Live GPS Data Logger BETA www.opengpstracks.net Mit dem PDA oder Smartphone direkt LIVE auf die Seite von Open GPS Tracks senden http Zeige Deinen Freunden wo Du bist! Anleitung: So einfach gehts, alles was Du dazu benötigst ist ein Handy oder PDA mit GPS-Modul und J2ME 1. Ruf mit Deinem Handy / PDA die folgende URL mit Deinem Browser auf: m.opengpstracks.net 2. Klicke auf “OpenGPSTracks Logger installieren”. Durch klick auf den Link wird die Anwendung auf Deinem Gerät installiert. Sollte die Installation fehlschlagen, überprüfe bitte die Systemvoraussetzungen. 3. Nun sollte ein ” OpenGPSTracks Logger “- Icon unter den Anwendungen auf Deinem Handy PDA verfügbar sein. 4. GPS Modul im PDA oder Handy starten. OpenGPSTracks Logger starten. Synonym eingeben und schon kann es los gehen! Die Nutzung der Software ist kostenlos und erfolgt auf eigenes Risiko. Es fallen eventuell Kosten für die Internetnutzung bei Deinem Service-Provider ( Handy Vertrag ) an. Es werden keine personenbezogenen Daten gespeichert. Systemvoraussetzungen: Handy oder PDA mit GPS-Modul und J2ME-Unterstützung (MIDP/2.0 oder MIDP/2.1) Internet-Zugang per Handy Neugier, Zeit und Spass an der Sache! Open Source Software # code.google.com This project is part of live.opengpstracks.net – a project run by private individuals – and implements a small client for gps-data logging for mobile devices (phones, pda, netbooks). It can be used with all mobile devices supporting the J2ME configuration profile CLDC-1.1 and …

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How do I convert 12vdc to 5vdc, within the range of 4-20mA?

Hello!

I am constructing a couple of sensors for a data logger, and the temperature and magnetic field sensors that I purchased require a 5vdc input. The data logger provides both a 12vdc and a 24vdc power tap to power the sensors, but I am not entirely sure of the amperage it is putting out (I would assume 20mA, since that corresponds to a full-scale sensor reading). I don’t have a multitmeter with me though.

Can anyone tell me what type of circuit is needed (preferably with a web address to a parts list or schematic) so that I can convert the 12vdc power tap to the 5vdc range needed?

Also, the logger can only accept signals within the range of 4-20mA (4mA represents a data value of 0, and 20mA represents a full scale), so what type of circuit would I need to accommodate this functionality??

Thank you all, in advance, for your expert assistance!!

-Dave
Thank you both for your input and expertise. I had assumed the method suggested would be the consensus. Just a little extra information about the "sensor". First, regardless of what sensor is created, it has to fit into the "4-20mA current loop" criteria.

For example, a temperature sensor that reads between 0deg and 100deg F., a reading of 0deg would output 4mA, and a reading of 100deg would output 20mA. All readings between 0deg and 100deg would fall linearly between the 4-20mA range.

I found a website featuring a diagram for a 4-20mA add-on circuit (http://www.freescale.com/files/sensors/doc/app_note/AN1082.pdf), and I’m wondering if it is a universal, or if it would only work with this one particular application. I know that values of components would have to be changed based on what sensor I use (temp, EMF, etc.)

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needed urgently..how do i get an 800b MSR206 MAGNETIC STRIPE CARD READER/WRITER, software/hardware?

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al these are needed …be it in sofware or hard ware..any one who can sell it or hire it is needed

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