For some time, I had that a green background curtain in my workshop. I sometimes use it when I want to change the background of my videos, because is very easy to use that effect. As I had it till now is very ugly because it stands there in the corner. For now I was using it on some sliding rollers and when I don’t use it, I put it on the side. That’s ugly and it messes up the curtain. That’s why today I will go from that system to an automatic motorized curtain with rollers that will go up and down and can be controlled with my smartphone. Youc could buy such system from AliExpress if you want but I wanted a homemade version. And this is pretty cool, right? I’ll share with you as always, for free, the 3D printed parts, the schematic and the code on this post. So guys, let’s get started.

#curtain    #bluetooth    #homemade    #3D printed    #electric   

Dragon R1 - An RC race car that's simple and easy to build

Hey guys have look at the recommended print settings before you get started

Features of this Open Source car:

Model is 1/12 scale;

https://youtu.be/SqHOaU0ZsxA

In this tutorial, 2 STM32 micro-controllers are communicating together using RYLR998 LoRa Module. RYLR998 interfaced over UART and its AT commands are explained in details.

GitHub Repository: https://github.com/UsefulElectronics/stm32-rylr998-lora-transceiver

#microcontroller    #STM32   

Hi I hope someone can help. I am working on a Judge Dredd (Dredd 2012) costume and want to do the Screen that is in the gauntlet playing a looped video with sound.i am totally new to this kind of thing and  i came across this tutorial using a 3.5" Nextion display. I have ordered the display but i need help in how i power it up and connect to the PC the or dont  i need to connect to the PC is everything on the SD card then put in the screen ?Sorry i just have no idea, power wise what voltage can  i use and like I  say most important how to wire it up ? This is the tutorial link https://electronoobs.com/eng_arduino_tut145.php

#Nextion    #Dredd    # Touchscreen    # Display    # Gauntlet   

https://youtu.be/uqETZzQw2Oo

In this tutorial STM32 MCU is used to interface PCF8574 Pin Expander over I2C to control 8 LED sound level indicator using only 2 pins. Both hardware and software are explained in details. All tutorial materials are shared in the GitHub Repository

This module for this post is a coin selector used for those redemption games machines. This can work with pretty much any type of metal coins all around the world. So how does it work? Inside we can see some infrared sensors, some copper coils, an electromagnet, operational amplifiers and a microcontroller. How can this module make the difference between several types of coins using those components? They are quite precise and the working principle is very interesting and involves magnetic disturbance. Well, in this post I will try to explain you how they work and make some homemade tests for each step. So, let's get started.

#tests    #Arduino    #selector    #coin    #DIY    #homemade   

Tutorial link.

https://youtu.be/gAXVNXT1Eh0

In this tutorial, STM32 micro controller is used to implement the algorithm used to trigger several different events, which are single press, double press and held pressed, form one single push button is explained with the necessary measurements that the code is based on.

Tutorial link:

https://youtu.be/1LzrtehidOI

This tutorial is a continuation of "STM32 Multiple Buttons ADC Read Through One Pin With Software Button Debounce" Tutorial, STM32 based electronic piano simple project was done using only 2 pins. One pin is configured to operate as ADC to read the status of 7 buttons and the other pin is used to derive a buzzer with a PWM signal. STM32 is programmed to generate a PWM signal with a different frequency when a different button is pressed, which will result in generating 7 different sounds. These sounds are actually the musical notes.

I've seen this idea on twitter and I wanted to make a homemade one. Is a nice product as humidifier but also as a huge smoking capacitor. You can 3D print it and make the same project with ultrasonic mist generator. Get the 3D files, the schematic and the part list from below and make your own. Consider giving me a like or a comment!

#3D    #3D printed    #humidifier    #ultrasonic    #Arduino   

This is my 3D candle LED design that can be used for decoration purposes. The design STL file can be downloaded from the link bellow:

https://www.thingiverse.com/thing:5253695

Youtube Video Link:

https://youtu.be/m5ILpJv-ESA

#3D    #3d printing    #LED    #candle    #led candle