The Nanodrone is a modular, Nano 33 BLE Sense-based platform that can be mounted to drones for data collection and other applications. 📷 element14.com/community/people/balearicdynamics

Gregory Leveque has created an adorable 3D-printed robot that not only walks on four legs, but folds up into a ball when not in use. To accomplish this, the round quadruped utilizes one servo to deploy each leg via a parallelogram linkage system and another to move it forwards and backwards. A clever single-servo assembly is also implemented on the bottom to fill gaps left by the legs. The device is controlled by a Nano, along with a 16-channel servo driver board. Obstacle avoidance is handled via an ultrasonic sensor, which sticks out of the top half of the sphere and rotates side to side using yet another servo. It’s an impressive mechanical build, especially considering its diminutive size of 130mm in diameter. 🤖 instructables.com/member/Greg06

A portal to your room! This Redditor's doorway welcomes him with an LED animation. The system uses an Nano that reads input from a PIR sensor down the hall. 📹 reddit.com/u/sunburstbox

Michael Klements’ laser-cut, Arduino-controlled ‘safe’ may not be the most secure model that you can find, but it certainly makes for a very entertaining puzzle. Users can place whatever they want hidden inside, shut the door, and press a rotary encoder button to lock it via a micro servo. They then must decipher a randomly generated four-digit code to get it open again. Number guesses are input using the encoder dial on the front, which are displayed by a small OLED I2C screen. Green and red LEDs provide feedback as to how many digits are correct and if they’re in the right position, eventually letting users figure out where everything goes by a process of elimination. 📷 the-diy-life.com

A MKR FOX-imeter! This IoT oximeter checks your heart rate and oxygen saturation, then sends it to the cloud over the Sigfox network. 👉 create.arduino.cc/projecthub/martin-cornu

As an enviable senior design project at Kennesaw State University, Tyler Gragg, Kevin Kamperman, Cody Meier, and Omar Salazar Lima created their own autonomous pinball machine. The table is not only nicely finished with an interesting playfield, but works quite well without human interaction. The machine’s IO system is actuated using an Arduino Mega, with higher-level controls handled by a computer running the Robot Operating System. While the game can be enjoyed manually, for automatic operation an overhead camera tracks the moving ball and calculates its position. When within tunable “flip zones,” the correct flipper is triggered, (hopefully) flinging the ball forward for more points and mayhem! 📷 instructables.com/member/Tdoe321

Like most of us, Joey Cumeras Khan has been stuck inside for the last couple of months. As a foosball fan, this not only meant plenty of time to play with his fellow housemates but also the perfect opportunity to tech out his table with an automated scoring system. Khan’s setup works by tracking goals via an LED and LDR pair situated in each player’s scoring tray. When a ball drops into the net, the score state is picked up by the sensor as a lack of light, thus signaling the controlling Arduino Nano that a goal has been made. This info is sent to an Orange Pi Zero, which runs a web app to display the current score on both players’ phones. To get started, one simply has to scan a QR code on the side of the table. This prompts the scoreboard along with some custom sounds and a reset interface to enhance your game experience! 📹 imgur.com/user/itsjoui

Testing a MKR RGB Shield with Python3 mounted on a Raspberry Pi 3 via Zihatec’s PiMKRHAT. 📹 @hartmutwendt

For years, you’ve marked up your door frames with pencils. Now, you can also track your children's heights with this Arduino measurement device! 📏 create.arduino.cc/projecthub/mircemk

Mech-Dickel Robotics has designed a Boston Dynamics-esque quadruped robot dubbed mechDOG, which utilizes a dozen servos for motion. This gives each leg three degrees of freedom, allowing the cat-sized beast to travel a meter in 8.46 seconds. While it won’t break any speed records, creating a walking motion on this sort of unstable platform is an impressive feat in itself. mechDOG is controlled by an Arduino Uno, while a Lynxmotion Smart Servo Adapter Board interfaces with the servos themselves. The device is remote-controlled via an RF unit, though it does have a pair of ultrasonic sensors that presumably could be used for obstacle avoidance. 🤖 bit.ly/mechdog

Quarantine got you down? Give your spirits a lift with this Starter Kit project! The Mood Cue utilizes a servo motor to make a mechanical gauge that points out how you're feeling during the day. This version uses colors and smiley faces to indicate a range of emotions. Add if statements: depending on the value of the angle, different text is printed to the serial monitor. For example, when angle is 50 and pointing to the light green smiley, the serial monitor will print “Great! Can’t wait to see you” A twist to this project is to share the code with your friend who has also built the Mood Cue. Then when they turn their servo, they can see messages that you wrote to them. For instance, now if your friend is upset and turns the servo to the red area, the serial monitor will print “Virtual hug from [your name]!” 🤗 arduino.cc/remotelearning 🏠 Share your own projects using #arduinoathome!

“Peterbiglab” wanted an input for his DIY color-changing lamp, but didn’t want to use buttons or even have it detect claps, so he decided to make it respond to touch. Instead of using a capacitive sensor or force-sensitive resistor, he placed a microphone inside his lamp to hear inputs. An op-amp was also included to pull the voltage up to a level that can be read by its Arduino Nano. With code implemented to keep it from picking up on music and other sounds, the device can now be controlled with finger taps: two to switch colors, three to turn on/off , or even four to enter Hue mode. It’s an ingeniously-simple sensing method, which works well here, and could be applied to a variety of other projects. 📹 reddit.com/user/peterbiglab