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9 Pin Cable Tester
Dan Hoover May 20,2024
This simple project just uses a few materials to build a cable tester allowing you to test any combination of male and female DE-9 (DB9) cables.New software allows you to control the speed and has a manual step mode.This project requiresArduino Nano - https://amzn.to/3ysygOz18 @ 5mm LEDs - https://amzn.to/3WQ7TvY9 @ 330 ohm resistors - https://amzn.to/4boEXQi4 DE-9 connectors - https://amzn.to/3QSAUmTOptional parts:Female Headers for Nano & screen https://amzn.to/3UMBFPF7 Segment Display - h...
Arduino DIY serial
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Arduino-based development board with extra features
silicioslab May 18,2024
IntroductionArduino is an excellent tool for anyone who wants to develop prototypes. The board has all the necessary resources for you to connect numerous electronic elements, modules and sensors.However, there is a big problem that makes connecting these devices difficult: the small number of pins for power supply for +5V and GND. This makes connections difficult, as it requires users to connect several wires together and often creates problems with poor contact between connections.Based on thi...
Arduino ESP8266 ESP32
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All About IC UNL2003
Adhikari May 17,2024
The UNL2003 IC contains 7 High Voltage, High Current NPN Darlington Transistor Arrays each rated at 50V, 500mA in a 16-pin DIP package. You can connect the IC directly to a digital logic (like Arduino or Raspberry Pi, TTL or 5V CMOS device) without an external dropping resistor. This IC features "common-cathode flyback diodes" for switching inductive loads. The ULN2003 is known for its high current and high voltage capacity.The Darlington pairs can be "paralleled" for higher current Output.The i...
Arduino ESP8266 Home Automation
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How to turn mini Tesla Coil from Aliexpress into a Real Powerful SSTC with big spark
Pavleski May 16,2024
 Some time ago I bought a mini tesla coil kit from an online store that cost less than $4. It's a very simple project that I made in a very short time and immediately after switching it on it worked correctly. If I bring a compact fluorescent lamp (CFL) closer to a certain distance, it lights up under the influence of the electric field generated by the device. However, even at the maximum recommended voltage of 24 volts, the length of the spark is not greater than 1-2 millimeters. in ...
Power supply DIY Arduino
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IoT Indoor system with ESP32 to monitor Temperature, Humidity, Pressure, and Air Quality
silicioslab May 15,2024
IntroductionAir quality, temperature, humidity and pressure are essential elements to ensure healthy and comfortable indoor environments. However, these parameters are often outside of ideal standards, which can result in a series of health and well-being problems. Air pollution, lack of adequate ventilation, extreme variations in temperature and humidity, as well as fluctuations in atmospheric pressure, are some of the main challenges faced in closed environments.To monitor and control these fa...
Arduino ESP8266 ESP32
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I build Split clock using Arduino
Maa May 14,2024
My split clock project is a fascinating endeavor whereI combined mine passion for electronics and precision craftsmanship. By leveraging PCBWay's PCB manufacturing service and their advanced 3D printing capabilities, I've created a sleek and functional timekeeping device that displays multiple time zones simultaneously. The split design allows for easy monitoring of different time zones or the display of various types of information side by side. My project showcases your technical skills in PCB...
3D printing Clock ESP8266
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hoboNicola for Skyloong GK68 Keyboard
Koseki May 11,2024
This keyboard adapter applies to GK68 released by Skyloong. The adapter internally converts to thumb shift and sends the Roman code to the computer.The adapter's firmware is based on hoboNicola and has been modified to suit the operation of the GK68 Lite / GK68X. Since this keyboard has split space bar, it is very suitable for nicola japanese input method. Testing is performed using Microsoft's MS-IME.[CAUTION]Be sure to disconnect the miniUHS module's VBUS pattern from 3.3V. Please refer to the...
Arduino Keyboard
611
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hoboNicola for PS/2 Keyboard FMV-KB611
Koseki May 11,2024
This adapter applies to FMV-KB611 released by Fujitsu. This keyboard has built-in thumb shift firmware, but the adapter disables this and makes it work as a regular JIS keyboard. The adapter internally converts to thumb shift and sends the Roman code to the computer.The adapter's firmware is based on hoboNicola and has been modified to suit the operation of the FMV-KB611. Testing is performed using Microsoft's MS-IME.[Note] Pro Micro shorts solder jumpers to operate at 5V.This project only suppl...
Arduino Keyboard
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DIY Arduino ultrasonic Sonar - Radar on TFT display
Pavleski May 10,2024
 Ultrasonic sonar is devices that use sound waves with frequencies higher than the upper audible limit of human hearing (typically above 20 kHz) to measure distances to objects. They work on the principle of sending out a sound wave, and then measuring the time it takes for the sound wave to bounce back after hitting an object. By calculating the time difference between sending and receiving the sound wave, the distance to the object can be determined using the speed of sound in air. In som...
Arduino DIY Sensor
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Practice Shield
The Developer Guy May 08,2024
An Arduino shield for all the beginners out there!Code examples, assembly manual and all other materials are available in the GitHub repo or the project's page.
Arduino LED PCB
987
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Popular Project
A Modified zFlip 5
With many Samsung zFlip phones hitting the unfortunate fate of a broken folding screen, I took it as an opportunity to build my own silly phone. Taking only the minimum parts required for the phone to...
ESP32-BlueJammer
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