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Internet of Things

6 Articles
Abhijit Ghosh
6 min read Min Read
This is my first post on home automation. As a 'Hello World' project, switching on/off a bulb is a common use case. This post is not an exception. But to spice it up, we'll use MQTT (MQ Telemetry Transport) - a machine-to-machine (M2M)/Internet of Things (IOT) connectivity protocol...
Abhijit Ghosh
4 min read Min Read
ESP8266 can act as both Station / WIFI client (STA_IF interface) and Access Point (AP_IF interface). AP_IF interface is active by default in MycroPython firmware on ESP826 . In the earlier post, we connected to the access point (AP mode) of ESP8266 and used WebREPL to remotely control switch...
Abhijit Ghosh
5 min read Min Read
So far, we have flashed MicroPython firmware onto an ESP8266 and setup WebREPL to run programs over WIFI on the chip. Now it's time for a hands-on excercise. We'll remotely switch on/off and control brightness of an LED using MicroPython WebREPL. 1. PrerequisiteThis post is continuation of my earlier...
Abhijit Ghosh
3 min read Min Read
WebREPL daemon auto-start is disabled by default in MycroPython on ESP8266 for security reason. Here, we'll enable the same, connect to the REPL over WIFI using locally installed WebREPL client and run a "Hello World" program remotely on the chip. 1. PrerequisiteThis post is continuation of my earlier post on...
Abhijit Ghosh
6 min read Min Read
By default, ESP8226 module comes with AT Firmware. In this post, we'll see how to flash MicroPython firmware onto an ESP8266 ESP-12E chip using esptool. Tools,Technologies and Components used in this article ESPlorer IDE MicroPython macOS Sierra Components: ESP8266 ESP-12E USB To TTL converter UART module (CH340) Breadboard 3....
Abhijit Ghosh
6 min read Min Read
Raspberry Pi is a low cost, credit-card sized and fastest selling personal computer. In this article, we'll install and configure Oracle Java ME Embedded on a Raspberry Pi. What is a Raspberry Pi? The Raspberry Pi is a low cost, credit-card sized computer that plugs into a computer monitor or...