• RFID based Attendance system using Arduino and External EEPROM

      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...

    • Posted 5 months ago
    • 0
  • ESP32 Neopixel Status Indicator and Sensor PCB Shield with Wi-Fi Manager

      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...

    • Posted 5 months ago
    • 0
  • ESP32-CAM with Telegram: Take Photos Control Outputs Sensor Readings and Motion Notifications

      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...

    • Posted 5 months ago
    • 0
  • Hands-free Tokens

      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...

    • Posted 5 months ago
    • 0
  • Making Your Own Photovoltaic 5V System

      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...

    • Posted 5 months ago
    • 0
  • Eyesight Guardian – Protect Your Eyes With Arduino

    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,...

    • Posted 5 months ago
    • 0
  • Accurate clock just using an Arduino

      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...

    • Posted 6 months ago
    • 0
  • Contactless Thermometer using Arduino with SD card temperature logger

      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...

    • Posted 7 months ago
    • 1
  • Cheap USB to UART Converter using Microchip MCP2200

    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...

    • Posted 7 months ago
    • 0
  • A compact Raspberry Pi CM4 carrier — Piunora

      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...

    • Posted 7 months ago
    • 0
  • DIY Digital Clock Using ATmega328p, RTC DS3231 and Seven Segment Displays

      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...

    • Posted 9 months ago
    • 3
  • Automatic chess board design

      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...

    • Posted 10 months ago
    • 3
  • An ESP8266-based WiFi doorbell sends SMS messages

      On-line shopping has changed the way goods are acquired.  For most packages it is not necessary to be around for the dropoff.  But… for the important stuff it is.  Those packages always seem to show up right when you...

    • Posted 10 months ago
    • 2
  • 18650 Battery charger reverse polarity protection

      Having many 18650 battery cells to charge, I bought a few dirt cheap TP4056 modules (0.22 EUR per piece) and discovered that they are “not designed for” reversed polarity cells. In other words, reversed battery = instant magic...

    • Posted 10 months ago
    • 2
  • Upgrade Your Headphones by Making it Wireless

      Upgrade Your Headphones by Making it Wireless In today’s video I want to show you how to make wireless headphones from wired ones! You need only 4 cheap components: $2 bluetooth stereo module, $2.5 battery, $0.5...

    • Posted 10 months ago
    • 2
  • How to solve audio feedback issues when live streaming

      Mix minus is an audio production technique that lets you get all of your audio signals where they need to go while avoiding problems such as feedback, interference, etc. It can come in handy if you’re...

    • Posted 10 months ago
    • 2
  • AvoRipe – Check your Avocado’s Ripeness

      It happened to everyone, you buy an avocado, it’s not ripe yet. A few days pass by, and by the time it’s ripe you have forgotten about it… and in a few days, it may go...

    • Posted 10 months ago
    • 2
  • Stopwatch and Lap Timer with Arduino

      Stopwatches are very useful in several applications and made by yourself using an Arduino, it is really more interesting! This project is really simple, easy to be assembled using few components and has an excellent accuracy...

    • Posted 10 months ago
    • 1

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