Tagged: Code

0

Using DataTables with CouchDB

DataTables is an Open Source jQuery plugin that adds controls to any HTML table. Usually DataTable takes an existing HTML table and adds functionality to it. It can also pull data from a remote JSON and create table on the fly. It’s a useful feature. Although for big datasets it doesn’t work as...

17

Reverse Engineering iTag – A Bluetooth Low Energy Button

Couple of weeks back I bought a few iTags. These are simple BLE buttons. They have a small led, a button and a buzzer. CR2032 – a 3v coin cell battery powers it. Since they are Bluetooth Low Energy devices, a single cell can power them for years. It’s easy to change batteries...

Expo Browser Preview 0

Expo.io – Building Android and iOS Apps using React Native Made Easy

I have used MIT’s AppInventor in class rooms. All non-professional programmers appreciate how easy it is to use AppInventor to create apps. I have also seen lot of professionals using it to create one time use apps including me. It’s a great tool except you can’t generate an iOS app. On the side...

0

Logging code commits with Nomie

I use Nomie to track almost all things in my life. For a long time I wanted to log my commits so I can do some analysis like “where do I code the most?” etc. So as soon as I got the Nomie API key, I created post-commit hooks to track code commits....

The UART over BLE Protocol flow. 10

UART GATT Server (Peripheral) on Android

In most BLE scenarios, Android app is a client (GATT Client). But one can also use Android as a GATT Server. There are use-cases where running a GATT Server on Android can be useful. For example let’s say you want a desktop app to display SMS notifications. It’s easy to write a GATT...

2

Now Open PostBox India data is available as GeoJSON

We crossed 100+ postboxes this month. As promised I am releasing the data in an open format that can be used by anybody. I am planning to update data for every 25 new addition of postboxes. Data is available in the form of GeoJSON which I thought is the most user/developer friendly format....