Arduino based high altitude balloon data logger

One of the more interesting experiments you can do above surface of earth is fly balloons in to stratosphere. Fun thing is that whole experiment isn’t very expensive and can give tons of fun. Probably most expensive thing here is balloon itself. The other parts can be used as you desire. Spaceshark have shared his experiment and build details on his instructable. He used Arduino Uno for logging various basic sensors detecting latitude, longitude, altitude, wind speed. He wanted to keep things simple and self contained, because at heights above 60000 ft some sensors start failing, e.g. GPS. Batteries are also another issue due to cold air above. He used authentic Arduino to make sure it works bellow -40 degrees Celsius. Fake ones can fail even at 0 degrees. Same … Continue reading

9 Tips for Nebulizing the Young Ones

Kids are adorable. They are the most loveable thing to be present on this planet earth. It’s like god has sent angels on the planet so that people could learn how to love and how not to hate. The young ones who are perhaps the most affable thing on this planet. So, what happens when these small wonders fall ill? It for sure looks bad and one whether connected or not just wants to have them walk over the pain. And that is why we have come these nebulization tips for your young ones. Today’s air is no good for young ones. The dust, the pollution, the smoke, all have adverse effect. So just to keep your child healthy and fit and having them not be in pain once being … Continue reading

Wearable electronics

Many tech experts think that the next technology wave, beyond the smartphone will be the wearable device.  Fitness trackers have been around for a few years and have a reliable feature set. Smartwatches, running the Android or Apple operating systems have their early adopters, but sales have been less than stellar.  People complain about their bulk and limited feature set. They are often quite ugly. Wearables don’t have to come in an ugly watch form.  There are some interesting products that you can get right now, to participate in the wearable revolution. Various kinds of products are available now. For instance you can get a smartwatch in the form of a designer watch. You can get nice smartwatches now from Fossil, Kate Spade, Michael Kors  and Skagen.  These come in … Continue reading

A Holiday Programmed for Romance

No matter how much I explain that I design digital devices and interactive objects using open sourced software that can sense and control objects in the physical world, my folks just don’t get it.  It’s too techie for them.  So I decided to show them what I do and how it applies in the real world by taking Arduino kits and building all my gifts for Christmas.  Luckily I’m from a small family and have the time to do this without flaming out of grad school.  It wasn’t long before I realized a Battle Bot like robot would not make an impressive gift for my grandma.  Worse, it could hurt her.  Blinking lights can be interesting, but useless.  Creating things like robotic arms are good for demonstrating how this stuff … Continue reading

Simplest Attiny85 based watch

We are used to see different kinds of DIY watches. Some of them try to stuff lots of functionality, other make fancy time telling format or simply mimic smart watches. But why not build a watch that only tells time in a simple manner. This Attiny85 watch is what it does. Schematic is very simple and straight forward – Attiny85 microcontroller, 12 LEDs, push button, three resistors and coin cell battery. Such simplicity allows building small watch shaped PCB where all components are fit to look nice and light. Since microcontroller comes with only 5 I/O pins (excluding reset), LEDs are connected using smart Charlieplexing method that allows saving pins for simple I/O tasks. The only shortcoming of this watch that time is counted using microcontrollers internal clock which may … Continue reading