Today, although the wireless technology grows very fast, the long distance funicular communication still keeps its popularity. The reason is obvious that cost and complexity is high at the wireless communication. Click to enlarge RS232 is one of ...
Introduction We have been selling the PSP and Nintendo DS touchscreens for a while now and it is about time we do something cool that uses them. A LCD touchscreen project first comes to mind, but I really wanted to do something different. Ryan, one ...
Introduction This tutorial continues from Character LCD Displays - Part 1. In this part we will connect the LCD module to an Atmega8 microcontroller, then write some code to drive it. The Circuit Our first task is to build the circuit. Click to ...
Introduction LCD character displays can be found in espresso machines, laser printers, children's toys and maybe even the odd toaster. The Hitachi HD44780 controller has become an industry standard for these types of displays. This tutorial will ...
This is a keylogger based on PIC12F675 with 64K eeprom ( 24LC512 ). When keylogger is connected between PC and keyboard it will record every keypress to memory. By pressing a button recorded data will be sent back to PC so user can read it. No need ...
Attention!!! This circuit its only a reader its not programmer. You CANNOT refill, hack or any illegal thing, the telecards. The purpose of this circuit its to understans how a microcontroller read, serial, the telecard, to build some other ...
Introduction When you use microcontrollers in your designs, sometime you face a problem how to show user required data. Several LEDs, 7 segment display or LCD module can be solution. But if you must show a lot of information simultaneously, it can ...
Adding a cheap LCD to your PC is a popular diy project for many beginners in electronics. The parallel port however, is dead. It's obsolete. It's big...ugly and just awful. The solution? Add a USB interface to your existing LCDs. The ...
Introduction Sometimes you only need a simple and cheap RS232 terminal to get sufficient control over a PC or a RS232 device. There is no need, no space or even no power to place a monitor, a computer case and a keyboard. Maybe there exists also ...
Dave Vanden Bout In an application using a pin-limited microcontroller (MCU), I needed to scan an array of 16 buttons. The technique I used involved a series string of resistors of identical value connected between two bidirectional pins of the ...