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 and an android app (IoT MQTT Dashboard). Bulb is merely a symbolic representation of an electrical device. We can practically control any device (Internet of Things) over internet.
Configure STA_IF interface of ESP8266 (MycroPython firmware) to connect with WIFI network automatically on boot
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 on/off and brightness of an LED. Now, we'll configure the ESP8266 (as WIFI client) so that it connects to the WIFI router automatically after booting.
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.
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.
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.
To uninstall OpenCV (Open Source Computer Vision) from Raspberry Pi (Raspbian Jessie), follow the steps mentioned below in this article.
Troubleshooting: Cloudera Hue not able to access Solr collections through Search tab assuming both are set up with CDH4
Are you serious about speeding up your WordPress-hosted website? If so, chances are high that you have shelled out money for clutter-free codes or designs that will reduce your site's loading time. If you are like most Webmasters, you have eagerly devoured webinars, eBooks, and worksheets that teach you how to increase your site's speed. However, as it turns out, you might not need to pony up some dough!
You are not so strong with SQL or you are not good at programming? And you need to create distributed scalable search on a very large dataset stored in HBase? And you need to achieve NRT (Near Real Time) indexing? Cloudera search along with Lily Hbase Indexer is there to rescue you!
It is affectionately said that what Oracle is to Relational Database, Cloudera is to Hadoop. Most of the Hadoop aspirants, at the beginning of their Hadoop development learning curve, fiddle with the setting up of CDH, some able to do it smoothly (Cloudera has put up an incredibly exhaustive installation guide), some requires to really sweat it out (few finer details and prerequisites are either missing or not enough emphasized upon) and very few actually gives it up losing their way in the verbose and cover-all-cases installation guide(multiple way of set up and different set of instructions for different linux OS; sometimes too much of variations for impatient starters). So there is a target audience for one more set up document which is leaner, meaner and streamlined with only one (the most preferred) variation. Try it at home!!