Denzil Ferreira

Ubiquitous Mobile Context Instrumenter & Tinkerer

RPi Chronicles

Fix SDCard not booting Edit your /boot/config.txt file and add this to your kernel line: sdhci-bcm2708.emmc_clock_freq=100000000 Fix WiFi: Realtek RTL8188CUS I bought this micro WLAN adapter. Unfortunately, the power management is active on this particular adapter on the kernel drivers and it will turn off and disable itself from time to time. Lets start by creating a script to check if we have internet connectivity: sudo nano wifi.sh Add this to this file:.. Read More

OneTouch – person-centric communication

DSC02024-leveled

    OneTouch represents a revolution in unified communications. OneTouch empowers the mobile workforce by providing a user-centric mobile experience that puts you in control, whether your at work or at home. OneTouch’s design went beyond current solutions to address the needs of the mobile workforce. Whether your on a call or checking emails, OneTouch’s mobile experience puts everything you need, OneTouch away. OneTouch connects you to the people and places that matter.. Read More

Overcharged – saving your battery

Ambient Notifier state machine

Most smartphones alert the user for charging when the battery reaches critical levels, but do not notify the user when it has finished charging. This application does it, personalised by the user using notification sound, vibration, LED light and voice (with the Text-to-Speech) functionality on Android devices. Motivation Every year, $22 million dollars are spent in electric utility costs with overcharging [1]. where the country could save 300 millions kWh in electricity per.. Read More

Ambient Notifier – peripheral attention

Ambient Notifier prototype

The Ambient Notifier is a standalone device designed to reduce the frequency of explicit interaction between users and their mobile devices which are due to users wishing to remain updated about the status of their phone. Motivation Mobile phones are becoming an increasingly ubiquitous technology due to their widespread penetration in the public, their growing functionality, and the wide spectrum of activities they support and facilitate.  Despite their mobility, empirical evidence on mobile.. Read More

OuluRest – location-aware restaurant finder

Finding an open restaurant after 7pm at Oulu is mission almost impossible. OuluRest was a public display application geared to show where to eat, and how to get there based on where you are. Workshop The 1st International UBI Summer School was held in Oulu, Finland, on May 31 – June 4, 2010. The purpose of the summer school was to provide young researchers with an opportunity to gain deeper insight to the.. Read More

SmartMail – digital physical mail

SmartMail is a sensor augmented mailbox that notifies you on your email when you have mail. No more checking for mail unnecessarily! Motivation Don’t you just hate it when you go and check your mailbox to find it empty? What if you already knew when you actually have something inside it beforehand? SmartMail was a budget solution for this problem. Know when your physical mail arrives digitally. Hardware We used an Arduino Duemilanove,.. Read More