Why settle for a some boring furniture, when you can have your own sand and rock display powered by an Arduino Uno and stepper motors instead?!
According to his write-up, Instructables user “MakrToolbox” gets many ideas that never leave the pages of his Moleskin notebook. Although it has to be difficult to decide which ones gets to live in reality, this Zen Garden CNC End Table seems like it was a great build choice.
The table consists of a piece of plate glass covering a “garden” of sand and stones. On top of this is a metal ball that moves around via a joystick on the side of the table, traversing the sand and making interesting shapes, like a giant Etch A Sketch. The ball is pulled around with a magnetic servo-powered gantry system underneath.
With a DVD pick-up, an Arduino Uno, a laser, and an LDR, Instructables user “Venkes” has managed to create a DIY Laser Scanning Microscope (LSM).
A laser microscope works by shining a beam of light on a subject in an X-Y plane. The intensity of the reflected light is then detected by a photoresistor (or LDR) and recorded. When the various points of light are combined, you get an image.
Obviously you need a very small laser beam. Since a DVD laser unit has to work with the extremely small bit markings on these disks and has coils to steer the lens built-in, this seems like a logical choice to use with a custom microscope. Though it took quite a bit of effort to make, it’s capable of 1300x magnification and attaining a resolution of 65,536 pixels (256 x 256) in an area of .05 x .05mm. Results start around 3:00 in the video below.
Martin Raynsford shared detailed instructions of how to make a DIY Heng Lamp, project instructables here:
The HENG Balance lamp just successfully funded on Kickstarter, the design is pretty cool and unique so we decided to make a copy of it. At it’s heart it’s just an LED lamp with a simple micro switch to turn it on and off, we had all the parts to hand and a laser cutter to make the more complicated bits. The lower magnet is pulled towards the upper magnet and that turns on the micro switch.
With books being replaced by electronic alternatives and sugary drinks in short supply, this custom locker has come to the rescue.
After a conversation with a few friends about an idea he had for a vending machine that fit entirely inside of a locker, high school student Blake Hawkins decided to actually make it a reality. His setup crams dispensing hardware for two types of highly-caffeinated soda, including an Arduino-connected coin acceptor and a spring to keep the locker closed between sales. The C-shaped cylindrical device that physically doles out the cans is quite clever too.
No word on how school staff have reacted to his new in-school business, but the students have naturally been quite entertained and pleased about the new locker hardware. Hawkins even got to ask his girlfriend to the prom using the contraption with a custom can for her!
A traditional reflex bag is meant to help improve your punch accuracy and timing. However, Carl Gordon decided to make his a bit more interactive and gamified using an Arduino Uno.
As you can see in the video below, his setup adds four LEDs to the device to tell the user which side of the bag to punch, and an accelerometer to let the Arduino in the base of the stand know when it is actually hit. This means that the person using it has to further work on his or her movement skills, adding a whole new dimension to the workout.
An electromagnetic pulse (EMP), also sometimes called a transient electromagnetic disturbance, is a short burst of electromagnetic energy. Such a pulse may occur in the form of a radiated electric or magnetic field or conducted electrical current depending on the source. EMP Jammer is a device capable of generating a transient electromagnetic disturbance that radiates outward from its epicenter, disrupting electronic devices.