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 module, external EEPROM and other circuit modules that makes this proposed RFID attendance system work. RFID card based…
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 with the BME280 sensor readings and show the temperature and humidity range on the LEDs (like two progress…
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 the ESP32-CAM that allows you to control your board from anywhere to request a photo, sensor readings or…
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 Embedded projects. I have around 3 years of experience in the embedded field. I always focus on innovative…
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 an energy storage charge by either PWM or MPPT controller. And supply for 12V Devices. This One only…
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, and because of this eye care is even more important than normal. To protect your eyes when using…
I started this as an academic exercise, but ended up with a very accurate clock. After running for 5 days, it had not lost or gained any time. The main issue with using just an Arduino is that its internal clock speed is not 100% accurate. Hence if you just rely on this then…
In this project we are going to learn how to build an infrared based non-contact thermometer which can be utilized for screening people at schools, offices, shopping malls etc. for abnormal body temperature which could be a sign of contagious diseases. The proposed non-contact thermometer can measure body temperature of a person at forehead…
https://youtu.be/2FcOQE6c_SA Nowadays USB port is used widely for data transactions between electronic devices and computers. In many scenarios, there is no need to communicate with the USB port directly, therefore electronic designers use USB to UART (RS232-Serial) converter chips, so the USB port is converted to a virtual COM port on the computer. The…
What is Piunora? Piunora is a development board complete with IO headers, USB ports, and HDMI output. It has an M.2 connector, some built-in LEDs, a camera connector, and a few other features. It also opens up some new functions, such as the ability to run the Pi as a USB gadget rather than…
This is an user friendly tiny digital table clock where user can access all basic functions of clocks including setting alarms, viewing temperature, viewing date, setting date and time, etc. It has a buzzer for alarm and four push buttons (Menu, Left, Right, Cancel) for user interaction. It can be powered by a standard…
I have a chess computer (not pictured), it’s quite a good way to play longer games at home. It’s hard to find an opponent online to play a game that might last 4 hours, and even if you find one, it’s easy for one side or the other to get distracted or lose interest….
Open-Electronics.org is the brainchild of a world leader in hobby electronics Futura Group srl. Open-Electronics.org is devoted to support development, hacking and playing with electronics: we share exciting open projects and create amazing products!
Open-Electronics.org is not just a container of ideas: it is also a web site lead by a team of engineers and geeks who will take part in the discussions and give support.
Our mission is to become a reference Open Source hacking site with ideas and feedback aimed to enrich the community.
