8 relays controlled by 8 opto-isolated digital lines or by Raspberry Pi. It’s not the first time that we propose a relay board, because in these pages you have found both generic control boards that can be...

Getting to know and evaluate the software offer for PCB, in order to choose the best one for our needs.   Designing an electronic board is a considerable and varied effort, both in terms of board design,...

  It automatically supplies meals to your pet at preset times, by providing the daily dose of cat kibble. Having a pet involves big responsibilities, first of all granting them food; unfortunately, a hectic lifestyle and imposed...

Identify faces in a video or live shot and recognize if they are wearing a mask: easy with the “raspberry”. The spread of COVID-19 has created a global health crisis that has had a profound impact on...

  In this post we are going to learn how to build a RFID based attendance system using Arduino development board, RC522 RFID reader module and external EEPROM. We will take a brief look at RC522 RFID...

  In this project, we’ll create a status indicator PCB shield for the ESP32 featuring two rows of addressable RGB neopixel LEDs, a BME280 sensor, and a pushbutton. We’ll program the board to display a web server...

Connected to the USB port of a computer, it allows you to simultaneously control four dual-channel infrared receivers of the POWER FUNCTIONS LEGO® series through simple serial commands. A few years ago LEGO®, manufacturer of the most...

  In this project we’ll create a PCB shield for the ESP32-CAM AI-Thinker board with a PIR motion sensor, a BME280 temperature, humidity and pressure sensor and some additional exposed pins. We’ll create a Telegram bot for...

  Hey Geeks, Now I am studying in +2 which is equivalent to 12th Grade. I am very interested in computer science and also my main subject is that. I spent a lot of time in developing...

  This uses a buck converter as a 5V Output to charge the battery(Li Po/Li-ion). And Boost converter for 3.7V battery to 5V USB output for devices needed 5 V. Similar to the Original system that uses Lead Acid Battery as...

https://youtu.be/DRDmLbAgXZc   How often have you used a screen for hours, only to find your eyes feeling strained, tired, and sore? Especially with the pandemic we’re all working and studying using our computers more than ever before,...

Today we will make a room temperature monitor, which we can use to monitor our room from anywhere in the world and to do that we will use a BLYNK IoT plateform and we will use DHT11...

I’m a huge Harry Potter fan, and one of the things I’ve always loved from the Wizarding World are the moving portraits. I have converted an old Kindle into a real-life moving portrait! More info

I bet unless you really use them, you may always be thinking of knocking them all out before using them in your project. Well, if you feel the need of having a simple relay module, with just...

With this project I want to demonstrate the idea of a Turing machine with as much clarity as possible. I tried to build a machine that is simple to program and easy to understand. I guess that...

This project helps make your day a little easier if you’re a remote worker using Slack. I’ll show you how to build it using an ESP8266 wifi board. Don’t miss the video above for the overview. More...

We ensure social distancing with an audible and visual beacon that alerts you when you’re getting too close to a store counter, kiosk or counter. Since the “restart” after COVID-19 and the various Phase 2, Phase 3...

On this litte instructable I will show how to create a simple RFID reader with TFT output for wall mounting using an ESP32. It’s easy to extend this simple design for more complex application and wireless data...