Tagged: Code

0

Decoding Google Datastore’s URL Safe Key

A Key (like a primary key) A unique identifier for an entity; it’s usually a long number. But it’s more than that. It’s a complex object which contains the unique ID (64-bit integer), Entity Name, Path, Parent, etc Datastore also gives you. URL Safe Key; that you can safely pass around. Here is how you decode it.

2

Converting JSON to CSV on the fly

I wanted a script that would convert the JSON to CSV in real-time, so I could use it at DataWrapper.

1

Coding in 2020 and COVID-19

Like many, this year has been crazy for me too. When there is a crisis that I don’t have control over, I surround myself with good people and work. So I can concentrate on things that I like. COVID-19 was no different, except I couldn’t meet people So it was mostly just work....

4

Testing Async systems with Karate Testing Framework

I have love and hate relationship with asynchronous systems. I love them because the flow is natural and doesn’t waste time and resources. I hate them because it’s difficult to test and debug. The most common asynchronous system that you would have used is Webhook type. Where you get a callback from an...

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...