Category: Technology

2

Simple BLE Oximeter App using PHONK

In the past I would have used MIT AppInventor or Expo.io. Both have amazing ecosystems. It’s easy to build apps using them. But this time I wanted to use PHONK. I had used Protocoder before and had liked it. Also I have this idea of building small utility apps called applets (yes!), that...

Bluetooth Oximeter 0

Reverse Engineering A Bluetooth Low Energy Oximeter

Just as COVID-19 is spreading in Bangalore. I got an Oximeter which can measure SpO2. SpO2 is also called as oxygen saturation, According to Wikipedia Oxygen saturation is the fraction of oxygen-saturated hemoglobin relative to total hemoglobin (unsaturated + saturated) in the blood. The human body requires and regulates a very precise and...

Nitrogen dioxide concentrations over India 0

Climate Change and Coders

I was checking the air quality reports of Bangalore for the period of 3 months when we were under strict lock-downs due to COVID-19. Bengaluru’s air has been doing much better under the lock-down. I am sure this is not a unique case. According to the analysis by CREA, for the Health and...

Zim Wiiki screenshot in my outliner mode 0

Outlining Your Notes with Zim Wiki

I have been using Zim Wiki for a long time now. Its my knowledge base. Very frequently I also use it as an outliner to take notes. This is an outline about that; written in Zim Wiki and exported as HTML. I have also attached a screenshot below. Outline is hierarchical text. Its...

0

Open Data in India: In a Restrictive Copyright Regime, Voluntary Organisations Pitch in to Make Data Accessible

Globally, while there has been a shift towards open data policies, some Government of India’s departments have gone the opposite way. They have decided to stop putting out data in the public domain. Data enthusiasts and voluntary organisations have been pitching in with their efforts to build open data resources in India. My...

Building in the times of COVID-19 0

Building in the times of COVID-19

As an engineer, maker, builder, you want to build something during the crisis to help the community. But what can you build as a software engineer that can help the society during this period of crisis? The answer to the question is not easy, As we have not seen something this devastating in...