There’s certainly no shortage of DIY clocks in the Arduino community; however, Eric Nguyen has come up with a rather unique way of showing hours and minutes: steel balls arranged as seven-segment displays.
For each time change, the face rotates down and a tray of arranged balls is lifted up to meet it via a servo motor assembly. Inside, a series of 28 servos capture and release the balls using magnet and linkage systems, plus another for the colon.
This is how used a nodeMCU to automate electric appliances
Android app based IOT drips monitoring system. (In other words cannula or IV monitoring system)
In this video we describe how to make an interactive coffee table using ws2812b leds and an Arduino. Not only does this coffee table have WS2812b leds and can display cool light animations, but it doubles as an interactive coffee table that lights up when things get up close to it. It functions by creating a cluster of nodes made up of 2 IR emitters, 2 photodiodes, and 4 ws2812b leds. Upon program startup, each node reads a base value of the ambient light. When an object gets close to the node, Infrared (IR) light is bounced off the object and into the photodiodes. This causes the diodes to change voltage and thus lets the arduino know if something is close. The IR emitters and photodiodes basically act like a proximity sensor and anytime something gets close to it, the sensor will go off. Please comment with any questions you have and like the video if you enjoyed it. If you want to see more content like this one, consider subscribing.
Dominic Plunkett and Eben Upton discuss the creation of the new Raspberry Pi Compute Module 4.
A traditional metal detector can locate a burried item and give you a rough location of the object belw the ground
A pinpointer enables you to pin down an object’s location, make a smaller hole when digging, and extract the item. Also, it can be used as handheld metal detector used by emergency responders to conduct security screening of individuals at access control checkpoints.
FlexLED is my attempt to create a very simple POV display! This video shows the second prototype I have created.
Natasha (AKA TechnoChic) is a member of a bicycle club that goes for rides at night during the summer, and while off-the-shelf lights are fine, she wanted something a bit more interesting. To accomplish this, while learning more about the technologies involved, she decided to equip her bike with an array of addressable LEDs.
The bike frame’s NeoPixels run on an Arduino Nano 33 IoT, which is connected to a boombox via a 3.5mm jack that enables the LEDs to react to the music. Two other Nano 33 IoT boards are used to drive the lights on each of the wheels, with the eventual goal of linking them wirelessly for central control. The system is powered by a 10,000mAh battery pack along with a pair of 2000mAh LiPos for the wheels to keep things glowing for several hours.
I wanted to photograph plants for over on the new channel, but my little intervalometer just wasn’t giving me what I needed. It’s a great intervalometer that has never failed me, but this project just requires something that it can’t give me. Computer-controlled lighting!
This is a smart home kit from Keyestudio. It’s a really fun way to learn Arduino.