There are many ways to modify analog and digital electrical signals, but things get a bit more complicated—or at least specialized—when working with coaxial signal transmission. To this end, Kerry D.
Programmable LEDs are amazing pieces of hardware, allowing hackers to add a rainbow of colors to projects at reasonable prices. Troubleshooting these devices, however, can be a pain, so Devon Bray developed the “BlinkBox” to help with this task.
If you love electronics as well as plants, what better way to combine the two than with a smart hydroponic system? Students at the Juan de Lanuza School decided to do just that, creating a portable hydroponic assembly that’s automatically controlled with the help of an Arduino Mega.
Years ago, engineer and photographer Harold “Doc” Edgerton figured out how to “bend time” by pulsing a strobe light at the nearly the same speed as droplets of water, making them appear to move in slow motion, freeze, or even more backwards.
After Instructables user R0RSHACH’s son won a place at the World Scout Jamboree in 2019, the maker decided to create a fairground-style game for fundraising.
The resulting device is akin to a Whack-a-Mole or Batak game that can be found at high-end gyms, and features eight large light-up buttons per player on a wooden frame.
Javier Betancor is developing a system that collects power as you ride a bike, with the goal of powering data collection and lighting. “imPulse” uses a stepper motor for power generation, along with a geared hub to make the motor spin at multiples of the wheel speed.
Stepper motors work by alternating a series of magnets in order to rotate its shaft by a certain angle. When the shaft is manually twisted, these magnets produce an electrical signal in a predictable pattern, which as shown in the video below, can be used as an encoder with the help of an Arduino Uno.
Ultrasonic sensors are great tools for measuring linear distance or object presence. As shown in this experiment by “lingib,” two sensors can also be combined to determine not just linear distance to a sensor, but its position in an X/Y plane.
Morse code may not be as widely used as in its heyday, but it still certainly has its adherents. One avid user is Tanya Finlayson, who has been using this as her method of communication for roughly 40 years.
While the STAR, or Sprawl Turned Autonomous Robot, is more than capable of traveling over obstacles with its three-pointed wheels, it can also make itself thin enough to simply slide under others as needed.
Father’s Day 2018 has come and gone, but it’s never too early to start planning for next year. As seen here, Michael Teeuw decided to build a clock out of three analog voltmeters for his dad in 2017.
Solar panels are a great way to produce power literally out of thin air, but how much power they produce depends, in part, on how they are aimed. In order to figure out just how much better his solar setup could be with active tracking, YouTuber GreatScott! decided to test this by creating a miniature solar tracking system.
Binary clocks, which use a series of dots to indicate the time, are nothing new, but you’ve never seen anything like this device by Matt Wos!
Wos’ project features a beautiful driftwood base, and WS2812B RGB LED dots that are suspended above it with copper wire to show the time.
If you want to work with round parts, a lathe is the tool to have, but takes some time to master. A full CNC version takes even more time and skill to understand, but mechanical engineer “Wade’o Design” has come up with something in between.
After successfully building a gigantic geometric interactive light structure, Jonathan Bumstead decided to do things in a more approachable manner, creating a more a reasonably-sized dodecahedron controlled by an Arduino Nano.