Gelstronic shared detailed instructions of how to build this 3D POV display, project instructables here:
In my project i use a spinning helix of LED strips. There are a total of 144 LEDs that can displays 17280 voxels with 16 colors. The voxels are arranged circularly in 12 levels. The LEDs are controlled by only one microcontroller. Because i have used the APA102 LEDs i need no additional drivers or transistors. So the electronic part is easier to build. Another advantage is the wireless electrical supply. You need no brushes and there is no friction loss.
Building robots can be (relatively) easy if you’d like something to wander around your room and avoid obstacles, but for complicated control tasks, like shooting pool, things need more development. Engineer “Bvarv” has been working on just such a robot, which currently exists as a one-sixth scale model.
Though it’s not currently capable of playing the game, the device uses some interesting tricks, including a frame supported by a pattern of increasing-diameter pieces of wood, a custom bearing made out of slingshot ammunition, and limit switches to control the billiard bot’s orientation.
For this project, Bvarv employed a pair of Arduino Unos and a PixyCam vision system, along with some servos, belts, and gears. While we may still be a few years away from a full-scale robotic opponent, you can check out the entire build over on Instructables and follow along with his progress in the videos below.
When you’re away from your home, perhaps you’d like to know what is going on there. A camera system is one solution, but is fairly data-intensive and might not be the right method if you’d like to monitor information such as temperature and humidity in several zones. For this, Rod Gatehouse decided to build his own LoRa environment monitoring system using an Arduino Mega.
To keep an eye on things, Gatehouse (aka “RodNewHampshire” on Instructables) came up with an excellent LoRa IoT gateway that can be controlled via four push buttons and an LCD screen. This device can take input from remote stations wirelessly, and can put this data online or push it to a user as a text message.
The system enables a homeowner to monitor the home environment via an Internet accessible dashboard, receive periodic SMS environmental notifications, receive real-time SMS alerts when monitored environmental parameters exceed preset thresholds, and log environmental data to the cloud.
Using an Arduino Micro for control, French teenager “Joebarteam” came up with a way to biometrically secure his garage.
If you need to get into your locked garage, what could be better than using your fingerprint? To this end, Joe’ came up with a system that unlocks his door using a fingerprint scanner, and a bistable relay to disable communication between the scanner and the Arduino if there’s a problem.
It’s a really professional-looking build, and the locking mechanism is especially interesting. Two rack-and-pinion devices plunge shafts into the ground, making the door impossible to open (it has to pull out before going up). If there is an issue with the system, the pins can be physically unlocked and disabled as needed.
With October still six months away, you may not be thinking about Halloween decorations just yet. However, this Arduino-based ocular assembly could make for a spooky yet simple prop!
There are few things more unnerving than an eyeball or three looking at you from some concealed position—such as under clothing as in the project’s video. If you’d like to scare friends, family, or random visitors, Maker Will Cogley has the perfect solution with his 3D-printed animatronic eye and eyelid mechanism.
A joystick moves the eyeball around, while a small push-to-make switch blinks the eye and another potentiometer adjusts how wide open the eyelids are by default. The device itself, which can be controlled with any Arduino board capable of supporting four servos, took him a day to design and build, and should take much less time using his instructions, code, and STL files.
When most people decide they’re going to build a quadcopter, they likely go to their favorite online retailer or hobby shop, and get the correct parts to connect together.
17-year-old Maker Nikodem Bartnik instead decided to customize things further, programming an Arduino to act as his flight controller, and constructing a transmitter (or “pilot” as he refers to it) from scratch. Finally, he attempted to 3D print the frame, but after some difficulty chose to just buy one.
The rest of the electronics consisted of four motors, four ESCs, some propellers, two nRF24L01 radio modules, an MPU-6050, a LiPo battery, and a bunch of other small components. You can see more of Bartnik’s project over on Instructables, as well as check out “Ludwik” (named partially as a nod to Nikodem’s friend “lukmar”) flying quite nicely in the video below.