Loklak Tweets – Tweets and much much more !

The last update when the tweets functionality was implemented, it was able to post a regular tweet from the loklak webclient application. The tweets functionality has undergone massive changes and multiple code refactor so that there are more features along with the usual features implemented by Twitter, them being

  1. The ability to post a map as an attachment to the tweet.
  2. The ability to post large text attachment 0r markdown to twitter.

Once the user is loggedin, the user can click on the tweet functionality where he’d be provided with a lot of options, post a regular tweet, a tweet with an attached image, a tweet with map attachment or a tweet with markdown.


Screen Shot 2015-08-25 at 7.27.04 pm

Ability to compose new tweets with map attachments

Screen Shot 2015-08-25 at 7.28.22 pm

Ability to write markdown code as attachment to the tweets.

Screen Shot 2015-08-25 at 7.28.30 pm

Live view of the markdown text rendered on the screen so that the user can see the large text content he/she is attaching as markdown text to twitter.

The use can also post their location via loklak to twitter similar to how twitter uses the geolocation service, the navigator request takes the coordinates and reverse looks up the database so that the location name and the nearby areas can be retrieved.

Large text tweet with markdown content

Map attachment tweets

Image upload tweet

All the tweets that are posted over here are cross posted to loklak to make it easier for the server to harvest the tweets, We’ve moved to loklak.net from test.loklak.net after a lot of testing to make sure that the application performs well under heavy load. We have collected more than 42 million tweets so far on the main server.

Loklak Tweets – Tweets and much much more !

A low-cost laboratory for everyone: Sensor Plug-ins for ExpEYES to measure temperature, pressure, humidity, wind speed, acceleration, tilt angle and magnetic field

Working on ExpEYES in the last few months has been an amazing journey and I am gratful of the support of Mario Behling, Hong Phuc Dang and Andre Rebentisch at FOSSASIA. I had a lot of learning adventures with experimenting and exploring with new ideas to build sensor plug-ins for ExpEYES. There were some moments which were disappointing and there were some other moments which brought the joy of creating sensor plug-ins, add-on devices and GUI improvements for ExpEYES.

My GSoC Gallery of Sensors and Devices: Here are all the sensors I played with for PSLab..

The complete list of sensor plug-ins developed is available at http://gnovi.edublogs.org/2015/08/21/gsoc-2015-with-fossasia-list-of-sensor-plug-ins-developed-for-expeyes/

Sensor Plugins for ExpEYES

The aim of my project is to develop new Sensor Plug-ins for ExpEYES to measure a variety of parameters like temperature, pressure, humidity, wind speed, acceleration, tilt angle, magnetic field etc. and to provide low-cost open source laboratory equipment for students and citizien scientists all over the world.

We are enhancing the scope of ExpEYES for using it to perform several new experiments. Developing a low-cost stand alone data acquisition system that can be used for weather monitoring or environmental studies is another objective of our project.

I am happy to see that the things have taken good shape with additional gas sensors added which were not included in the initial plan and we have almost achieved all the objectives of the project, except for some difficulties in calibrating sensor outputs and documentation. This issue will be solved in a couple of days.

Experimenting with different sensors in my kitchen laboratory

I started exploring and experimenting with different sensors. After doing preliminary studies I procured analog and a few digital sensors for measuring weather parameters like temperature, relative humidity and barometric pressure. A few other sensors like low cost piezoelectric sensor, accelerometer ADXL-335, Hall effect magnetic sensor, Gyro-module etc were also added to my kitchen laboratory. We then decided to add gas sensors for detecting Carbon Monoxide, LPG and Methane.

With this development ExpEYES can now be used for pollution monitoring and also in safety systems in Physics/chemistry laboratory. The work on the low-cost Dust Sensor is under progress.

Challenges, Data Sheet, GUI programs

I had to spend a lot of time in getting the sensor components, studying their data sheets, soldering and setting them up with ExpEYES. And then little time in writing GUI Programs. I started working almost 8 to 10 hours every evening after college hours (sometimes whole night) and now things have taken good shape.

Thanks to my mentor at FOSSASIA for pushing me, sometimes with strict words. I could add many new sensor plug-ins to ExpEYES and now I will also be working on Light sensors so that the Pocket Science Lab can be used in optics. With these new sensor plug-ins one can replace many costly devices from Physics, Chemistry, Biology and also Geology Lab.

What’s next? My Plan for next steps

  • Calibration of sensor data

  • Prototyping stand-alone weather station

  • Pushing data to Loklak server

  • Work on [email protected] website

  • Fossasia Live Cd based on Lubuntu with ExpEYES and other educational softwares

  • Set-up Documentation for possible science experiments with the sensor plug-ins and low-cost, open source apparatus

A low-cost laboratory for everyone: Sensor Plug-ins for ExpEYES to measure temperature, pressure, humidity, wind speed, acceleration, tilt angle and magnetic field

The Loklak Twitter Wall levels up!

Since our last update on this blog, the Loklak twitter wall has changed quite a lot. New UI, new features and loads of bug fixing and enhancements. Creating your new twitter wall is super easy. You can have your twitter wall running in as few as just 3 clicks, or you can spend more time in the wall creation process experimenting with around 20 different options so that the wall is just the way you want it to be.

Screenshot (1) Screenshot (2) Screenshot (3)

New Features:

  • Logo upload. You can now upload a logo which will be displayed on your twitter wall.
  • Specify a place name. Tweets near that place only will be shown.
  • Block profane tweets with our new and improved Profanity Blocker. While it is impossible to block all profane content, our profanity blocker is constantly learning and improving itself as we collect more tweets.
  • Images/Video filter
  • Negative filter. You can specify what you don’t want.
  • Optionally hide the event name and the Loklak logo on the wall.

All our 4 wall layouts are now available for use:

  1. The Linear Layout: This is a simple layout suitable for all kinds of events. Tweets are displayed in a list that gets updated frequently. 3 to 15 tweets are shown depending on your screen resolutionScreenshot (4)
  2. The Card Layout: This layout is particularly useful when you expect your twitter wall to be very active. Tweets are displayed in cards with 6 – 12 tweets being displayed at a time.
    Screenshot (7)
  3. The Center of Attraction Layout: This layout is suitable when your twitter wall is not very active. Only the latest tweet is shown, occupying most of the screen.
    Screenshot (5)
  4. The Map Layout: This is possibly the coolest layout and my personal favorite. Watch as pins drop down on a map and tweets pop up in real time! An image is not enough, you really have to see this for yourself!
    Screenshot (6)

We also have a leaderboard that displays useful stats about your hashtag. You can view top twitterers (yes, that’s what they are called), top hashtags and frequency of tweets over a period of time.Screenshot (8)

Meanwhile, we have also moved to loklak.net! We now have collected more than 40 million tweets and have data from more than 13 million users! More exciting thing soon to come.

The Loklak Twitter Wall levels up!