Morse Code Laser Transceiver
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Arduino Audio Triggered Power Switch
Have you ever wanted your home entertainment or sound system to power on automatically when plugging in your iPod or another portable MP3 player?
To achieve automatic power activation of a home entertainment system when a portable device is connected,...
laser sup circuit
Working with lasers can be enjoyable and intriguing, but it can also be costly. High voltage power supplies for laser tubes are often more expensive than the tubes themselves. However, this power supply can be constructed using common components that...
measuring battery capacity with an arduino
A selection of AA batteries was acquired from a supermarket, where the packaging did not indicate the energy capacity of the products. The batteries were labeled with terms such as "PLUS," "SUPER," and "ULTRA," but lacked any measurable specifications. To...
Modular Music Box Arduino polyphonic audio
Prior to emailing Pablo Gian Villamil, he provided a link to his class notes on generating polyphonic sound with Arduino. Efforts were made to understand his circuitry through various blog posts and component listings, including the CMOS Hex Schmitt Trigger...
arduino based remote control for electric door
A replacement remote control system for an electric garage door was constructed after the original remote failed multiple times. Although the old remote could have been repaired, it was 35 years old and not particularly enjoyable to use.
The replacement...
Arduino Ultrasonic Sensor with LEDs and buzzer
This is a tutorial for beginners who have recently started learning about electronics. The author has prior experience in programming with C and Python.
The schematic presented in this tutorial is designed for novice electronics enthusiasts who are transitioning from programming...
get on the blinkm bus with a blinkm cylon
BlinkMs are entertaining devices that function as small network components, each assigned a unique address on an I2C network. The potential of BlinkMs is particularly evident in their ability to simplify the control of multiple RGB LEDs. For a demonstration...
Laser Power Supply Circuit
This supply generates an initial high voltage for ignition purposes. After ignition, the supply generates about 1300 to 1500 V. If a higher ignition voltage (than the 6000 V supplied) is necessary, more multiplier stages can be added to D5...
Programming Arduino Wirelessly
The Arduino system provides a straightforward and open-source approach for programming microcontrollers. Typically, this involves using a serial or USB cable directly connected to the microcontroller project. However, challenges arise when the project is located in inaccessible areas, such as...