This is the 4th and final part of the Ethereum IOT Kid Grounding Device project. In this part, I will focus on describing the process of putting together the PIR sensor to write to the Ethereum Blockchain whenever the kid moves. I will also discuss my thoughts behind this project, explaining where it is lacking
This is part 3 of my Ethereum IOT Kid Ground Device project. In this part, we will discuss the codes of the web service backend written in Node.js and running as a server application. You may read part 1 here and part 2 here. In my project, the web service is where the Ethereum transactions are
This is part 2 of my Ethereum IOT Kid Grounding Device project. In this part, we will discuss the business logic behind Grounder.sol, the Smart Contract that does the real work behind grounding my kid. You may read part 1 here. I like to equate Smart Contract to the business logic layer of conventional apps
Internet of Trusted Things (IOTT) is a recently-coined term that explores the integration of Internet of Things (IOT) with Blockchain. To understand how this makes sense, just imagine the possibilities when IOT devices like a Smart Meter or a Smart Bulb read and write from the Blockchain and executes Smart Contract functions. To explore IOTT, I went ahead to build a little project that
In this part, I will develop a Cordova mobile app to display the message received from the Sigfox network on my mobile device. What have we done so far? In part 1, I developed the Zoe Helper hardware, a button that sends a Sigfox message to the Sigfox backend, and through a callback, route the message
In this part of the project, I process the message sent by Sigfox Backend via callback. To recap, this is the message: http://jacksonng.org/sigfox/newnotifications.php?message={data}&deviceid={device} The job of newnotifications.php is to read the message, check who it is intended for, and send the message to the receiver’s mobile device. Whose message is this? To find out who
In this project, I will hook up a button to my Arudino UNO. When the button is pressed, it will send a message through the Sigfox backend to my virtual server, and then finally as a notification to my mobile phone. Objective Low Power Wide Area Networks (LPWAN) are making IoT engineers all over the world excited. Sigfox is an LPWAN.
Read Part 1 here. I updated the Pulse Sensor project to give the Pulse Receiver a GPS. Now the Pulse Sender (the wearable that you will strap on your wrist) will send your pulse rate to the Pulse Receiver (which you will wrap around your waist) and then, apart from learning about your pulse rate, it
I wish to build a Bluetooth-based pulse sensor. Imagine a Fitbit that takes your pulse rate as you exercise and send this data real-time to your mobile phone. Hardware The Espressolite is a ESP8266 based microcontroller and the one that I feel the most passionate about; it is built as a collaboration between Espert Pte Ltd, a Singapore
