Category Archives: Arduino



Mathematics has always been a riveting subject both conceptually and practically, for the longest time. On my way to practising design, I discovered an outlet into art based off of mathematics. We are going to make a ‘Harmonograph’ based on physical computing using an Arduino.

A “harmonograph” is a drawing machine that makes geometric patterns that are related to the frequencies of activity on (at least) two actuators. These can be made using rotating platters where the relative speed and direction of the multiple rotating platters controls the figure being drawn. Even a simple harmonograph as described can create ellipses, spirals, figure eights and other Lissajous figures.





Location-Food CLock




I created the location-food clock as a way to notify my mom about where I am and whether or not I have eaten the appropriate meals for the day. It uses the location from my smartphone and turns the clock hands to one of three positions: Home, School or Elsewhere. The hands of the clock have three lights accounting for the three meals of the day. Whenever I have a meal, I press a button on my phone (using the IFTTT app) and the appropriate lamp lights up. At the end of the day, if all three lights are on, my mom would be relieved and happy to know that I have had food throughout the day. At midnight (my local time), the lights would all turn off.

Here is a link to my instructable post.


This is my version of the WORD CLOCK that uses Neopixels and Real Time Clock Module.

It changes the time every 5 mins and shows different colors at different times of the day.

This is a simple yet elegant clock to gift to someone or have it on your desk.

It is extremely simple to make.

Checkout my Instructable

Thanks for stopping by!



Smart Litter Box Sensor

If you have an indoor cat, you’re probably all too familiar with the litter box-changing process: You peek and sniff at the litter box, and if you encounter a grim sight or bad smell—it’s time to change the litter. Once you build your own smart litter box sensor, your cue becomes a blinking light and a text message. Much nicer, right?

Check out the video above to see it in action. And look below for some shots from the prototyping process.

1665_001_rtimg_4647_rtimg_4798_rtimg_4758_rtimg_4790_rtimg_478_rtimg_4786_rtimg_4795_rtrianna-chaz-2Want one? Find out how to make your own here!

Bibble: A Smart Desk Lamp for Roommates


The Bibble is a desk light designed to let your loved ones know where you are (or at least where you’re scheduled to be). The lantern can sit on their desk, softly glowing a particular colour, depending on whether you are at home, school/work, or out. It uses IFTTT integration to search for keywords in your Google Calendar, triggering your NeoPixels to change colour.

See the Bibble in action! Watch the video below:

Intrigued? Make your own Bibble, following the instructions in the Instructable here.

Heads Up!

Heads Up! is a speaker box hack – hiding a foam disc gun with a speaker inside, linked to a Wifi connected Huzzah arduino board. The board is triggered through the IFTTT service using a Twitter applet sending data when the hashtag #headsupPOD is tweeted. When data is sent to the board, the servo motor is triggered to pull the gun trigger to fire the foam discs. After just the right delay, the audio board is triggered to activate an audio file shouting “Heads up!”.

If you’d like to build your own and learn more about the making process, below is a link to an Instructables post.

Heads Up!

And here is the product in action!

Heads Up! from Andrew Schlesinger on Vimeo.

Proposal: Draw your mood

Imagine we have a twitter mood light, connected to a mechanical arm which draws. I want to make this amalgamation of Arduino projects which detects and ‘senses’ the world mood and represents it via a drawing. After much deliberation and research, I feel that the twitter algorithm has changed(even though I have found a few, wherein this is possible) and it is not possible to tap into its data.

Another possible iteration is to make a device which captures emotions using the press of a button and at the end of the day draws an image based on the prominent emotion of that day. Example: There are a few buttons installed at the PoD, people press(Happiness, Anger,Fear and more), at the end of the day the device captures the most dominant ‘mood’ and draws( I think I have to manually put in the image I want it to draw, though.) a painting relating to the most dominant emotion.

This can also be captured using the Vortolight method which uses a service like IFTTT to reflect colours based on what people tweet about. Essentially instead of changing colour, I would like to ‘move’ the drawing handle in a way which relates to a tweet.

Example: I am angry today #red. This makes the vortolight go red, in the same manner, the robot will draw a little something over a prompt by the tweet.

I looked at a few drawing robots and this seemed the most viable/accurate in terms of using a MECHANIX kit and servos(besides regular electronics) whereas the twitter part is mostly coding and web services(and a wifi module which should not be as expensive, however, the one used in some cases is).


Looking forward to starting with this after your feedback!