When it comes to building the battery packs, Li-ion cells are one of the best choices without the doubt. But if you get them from old laptop batteries then you might want to do a capacity test before building the battery pack. So today I will show you how to make a Li-ion capacity tester […]
A friend of mine is a scientist who does experiments that are very sensitive to air temperature and humidity. The incubator room has a small ceramic heater but the heater’s thermostat was not nearly accurate enough, only able to maintain the temperature within 10-15 degrees. Commercial devices that log temperature and humidity can be quite […]
Today I’m gonna make 3D Printed Unicorn Horn. I saw and did the project in Adafruit’s website about a year ago but I could not find an opportunity to share it. It looks great when going out to the party and especially in the evenings. 🙂 I got the horn out of the 3D printer […]
This was my project for Hack Sioux Falls. I built it one weekend and it turned out a lot different than I thought it would. It was a lot of fun and there are a lot of variations on what you could have the Arduino code do once you get the shadowbox wired up. My […]
In this project I will show you how to create a solar tracker which like the name implies can follow the movement of the sun throughout the day. And at the end I will show you the energy harvest difference between a solar tracker mounted solar panel and a flat mounted solar panel. Let’s get started! […]
I think this is a topic every parent is struggling with. How much can the kids play with their iPads (or any other tablet). We tried multiple approaches, like fixed times, but that did not really work as our kid then always wanted to go home the moment he was allowed to play with his iPad. […]
This instructable explains how to pinpoint the location of an object using an Arduino, two ultrasonic sensors, and Heron’s formula for triangles. There are no moving parts. Heron’s formula allows you to calculate the area of any triangle for which all sides are known. Once you know the area of a triangle, you are then […]
In this instructable, I will show you how to build a trampoline that changes colors whenever you jump on it! Step 1: The Things You Need Materials: 3 rolls of wire, different colors, the thinner the better Solder, the thinner the better – I had thick solder wires in the beginning, and it melted so […]
WHAT? Hi! I’ve made bleeding LED stairs! It’s a new Instructables leveraging some hardware installation I had done already from a previous I’ble from mine. I made a RED animation that resembles blood drops, perfect to be activated automatic during those trick or treat moments! As soon as you approach the stairs “drops of blood” […]
Arduino robot arms are among the most popular DIY projects. We decided to make ours out of recycled materials we found in our workshop. We hope you enjoy this build. Step 1: Electronics Main components Arduino UNO3 SparkFun Servos (Generic Metal Gear) PS2 Joystick 2 axis module Secondary components Voltage Regulator 5v Electrolytic Capacitor – […]
