Here is a PDF document written by D. Grover, explaining how to understand a manufacturer's datasheet. It goes through the 555 timer IC datasheet and gives an explanation on various parts. How to Read a Datasheet -...

This tutorial will guide you through the process of installing an FTP server on Raspberry Pi. Check it out: For uploading files on a Raspberry Pi you should install a FTP server. Such a server is very useful if you use your Pi as a web server or even if you want to have a network...

The project designed around L293D IC. The L293D device is quadruple high-current half-H driver. The 293D is designed to provide bidirectional drive current up to 600mA a voltage from 5V to 36V. L293D Adapter Board can be used as dual DC motor driver or bipolar stepper motor driver....

This is a great ATtiny85 watch that uses a SSD1306 OLED display and is powered by a CR1220 battery. Today core subject, ATtiny85. Someone suggest me to use SOIC version to reduce the watch size and I found the coin cell mAh calculation method will count the battery voltage down to...

Sergey @ malinov.com has build another FTDI FT231X based USB to Serial adapter and provides the design files to the public domain. This adapter allows connecting micro-controller boards that have 5V or 3.3V serial interfaces to a PC USB port. The converter is compatible with FTDI...

A few days before Valentine here is a great little project from Mike @ malinov.com. It's a LED heart based on PIC12F629 that is powered using a CR2032 battery. Design files and source code are provided. Valentine's Heart with PIC12F629 -...

gfwilliams @ instructables.com has build a smart battery charger that is able to individually charge each battery , automatically discharge them and give you an idea of their capacity. The charger is controlled by an Espruino Pico and results are displayed on a Nokia 5110 LCD...

People who are visually impaired usually use a staff to guide them as they walk. They tap with their staff to know if an obstacle is present around. Others use the echolocation technique. They produce a clicking sound through their tongue, foot, and fingers and through this they...