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Category: iPhone

IOS Sensor Tracking with SensorLog

IOS Sensor Tracking with SensorLog

Over the years I’ve used a variety of sensor tracking programs that ran on smart phones. These programs will read the sensors built in the phone and log them. I like this because it uses hardware that is already available. There are many apps that I have used to do this. The latest one I used is called SensorLog authored by Bernd Thomas. As of this writing it is at version 1.9.2, dated June 2nd, 2017. I’ll be covering some…

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Two Factor Authentication

Two Factor Authentication

Internet facing services are under constant attack. They are a coveted resource that provide footing when exploited. It’s prudent to not loose control of your services to abuse. One way to do this is to enable two factor authentication, commonly known as 2FA. Traditional authentication is based on what you know, a user name and a password. With 2FA, the second factor of authentication is what you have, a number token. In this post I’ll be covering how to setup…

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Orthomosaic Mapping

Orthomosaic Mapping

Introduction – Making some sense out of the mess of words The title is a bit of a misnomer since orthomosaic mapping has more to do images gathered perpendicular to the observed object, as in aerial photography.  I decided to keep the title since the method for rendering of 3D objects from a group of two dimensional images is the same.  Additionally, the basis of the rendering has roots in mapping relief.  All though the title might be somewhat incorrect,…

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Spring Heartbreak

Spring Heartbreak

RPi Dashcam Here’s a step by step using raspivid, super simple. RPi Bluetooth and WiFi I found it much easier to just use a USB adapter Edimax EW-7811Un, these instructions make it look easier than what I experienced with Adafruits “Ourlink” adapters.  I think my new AP doesn’t support the Ourlink band, so I had a sourlink. Here’s one from Plugable. BLE Revisited Bluetooth basic tutorial – from Sparkfun BC118 BLE Mate 2 Hookup Guide – from Sparkfun…don’t get too…

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Control with Bluetooth LE

Control with Bluetooth LE

Introduction – there is more than one way to get bits from point to point Connecting devices using wired connections can be too complex or costly.  The agility of some systems is compromised when hard wiring the components.  Modifying becomes labor intensive.  This is problematic for systems that are used for research or development.  Wireless technology has advanced recently with the release of Bluetooth Low Energy. Bluetooth LE has brought about a simpler way to connect and control devices.  Earlier…

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Sensor Helmet Developments

Sensor Helmet Developments

CartoDB – Cloud based GPS visualization Back in April I had found ways to plot sensor readings using GPS Visualizer.  The website allowed me to upload my data and plot the results on a map.   Just recently I came across another online tool that has some enhanced features that made me take notice. CartoDB provides SaS that processes geospatial data and presents it in customized formats.  The helmet sensor readings will be geospatial data.  This will be ideal for that application….

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Heart of the matter – Bluetooth Low Energy

Heart of the matter – Bluetooth Low Energy

New phone means new things… My Android phone was ridiculously problematic.  The battery life wasn’t reliable and the reception spotty.  I finally conceded and replaced it with a iPhone 4s.  I have a 5s already and use a case on my bike to house it while travelling.  The new phone is a bit shorter than the 5s, so I thought I’d check with the case manufacturer for a 4s case. The manufacturer is Tigra Sports and they offer a variety of…

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