A 4 node wireless network setup using the NRF24L01. Code link: https://github.com/webslinger2011/RF2…
Arduino
LAM – Laboratory Arduino Mobile
You’ll learn how to construct your own Arduino laboratory.
David Hansel’s ArduinoFDC Converts an Arduino Into a USB Floppy Drive Controller
Requiring no additional hardware beyond an Arduino Uno, Nano, Pro Micro, Mega, or compatible, ArduinoFDC is surprisingly powerful.
Developer David Hansel has published a tool that aims to make it easy to integrate classic floppy drives with a modern computer: ArduinoFDC, turning an Arduino Uno, Nano, Pro Mini, or Mega into a functional USB floppy controller.
“ArduinoFDC consists of three parts,” Hansel explains of his Arduino Sketch. “A library providing low-level functions to allow reading and writing disks at the sector level as well as low-level formatting disks. Integration of ChaN’s brilliant FatFS library to provide file-level functions for reading and writing files and directories in a FAT (MS-DOS) file system and a high-level format function to initialize a FAT file system.”
You take care of a pet eyeball in this bizarre video game
“Avant-garde” is a French term that translates literally to “advance guard,” as in the vanguard that leads an army into battle. In the arts, the term describes people or works that are experimental and push the boundaries of their medium. Emily Velasco, of the Emily’s Electric Oddities YouTube channel, used an Arduino Nano to build a bizarre video game and “avant-garde” is the best way to describe it.
The CelloBot (Robot Design Controlled by an Arduino Uno)
Hello, I’m Andre and this is how you can build and design your own robot with dancing features. This robot was designed as a team project for my junior design class at Georgia Tech. The entire system is completely controlled by an Arduino Uno microcontroller, with various user interface devices. The fundamental components to the motion of the system are two servos that have been attached to a model of a cello. This guide assumes you have experience with soldering, laser cutting equipment, c++ programming, circuit design, and 3D printing.
Streamer-Focused Arduino-Powered Sparkpad Packs Keys, Volume Control, OLED Display, and More
Supplied as a kit with open source firmware, the Sparkpad aims to be a one-stop device for streaming, video editing, and more.
Maker Patrick “Paddy” Thomas has launched a display-equipped RGB macro pad, or “reconfigurable control surface,” built around an Arduino Pro Micro and with streamers in mind: the Sparkpad.
“The Sparkpad is a reconfigurable control surface, primarily aimed at Streamers. The V1 Sparkpad is designed to communicate with streaming software — such as OBS – via HID commands sent over USB,” Thomas explains of the design. “However, due to its modular hardware design and open source Arduino firmware, there is scope to do much more. We are hoping to foster a development community, and we will continue to develop improvements for the Sparkpad as and when we can.”
The DIY force is strong with these 10 Arduino Star Wars projects
Hokey religions and ancient weapons might not be a match for a good blaster, but Arduino Star Wars projects certainly are. To celebrate May the 4th (also known as Star Wars Day), we’ve put together a list of inspired builds from a galaxy far, far away that you can make yourself.
Multiplexing 6 I2C TCS34725 Color Sensors
Have you ever had to use sensors that use the I2C protocol, but realize that they all have the same, non-changeable address?
While working on a project including multiple colors (which I hope to post soon), I realized I needed to use some sort of color sensor/camera. I decided to use 6 TCS34725 modules, which will be able to return the RGB values of certain colors to me. The problem was that these TCS34725 modules use the exact same address: 0x29! This was a problem for me since I needed 6 of these modules, and since the sensors all have the same address, it won’t know which ones which! This is when I realized I can use a multiplexer to get these sensor signals into one.
Bluetooth Controlled LED Matrix
A hand-crafted 8×8 LED matrix driven on Arduino using the MCP23017 GPIO expander and controlled via Bluetooth from an Android device.
The internet is littered with tutorials teaching how to use dot matrices or build them, so why add-in another one I hear you say? Simply because making LED displays is fun, the outcome is eye-pleasing and useful in every way you could imagine. And since we’re at the age of IoT, what a better way to interact with it than from your smartphone. I used the LED matrix I built as a scrolling ticker, just to showcase the versatility of such a device. In the following I’ll shed some light on the essential building blocks of this project.
A Mini Bluetooth Dot Matrix Printer
This ATmega328P-powered device is like a tiny modern-day telegraph printer.
YouTuber Et Discover built a miniature printer that’s controlled by his phone over Bluetooth. The device uses a pen as the marking device and a micro servo and linkage system to move it back and forth. The small strip of paper is advanced by a 24BYJ-48 stepper motor, along with a ULN2003 driver, allowing for sequential control over pen placement.
What’s interesting from a mechanical standpoint is that the pen doesn’t descend to the paper to make each dot, but instead the rig employs an electromagnet to bounce the paper up to hit the pen. A neodymium magnet is embedded in the small printed platform that rises up to receive a dot, and a boost converter is used to produce 24 volts for actuation.