My motivation for this project was to minimize the usage of functions such as _delay_ms(), _delay_us() and their derivatives with some exceptions, like delays to control the LCD.
Delay pauses the whole program, so if one is using delay for 10 seconds everything will pause for those 10 seconds, therefore nothing can be done in those 10 seconds.
Read more »If you recall, when last we left our humble spectrophotometer, it was a shambling mess of stone-age technology. Now, its a shambling mess of information-age technology!
Read more »Last time, I posted an ultra-simple “from scratch” RFID reader, which uses no application-specific components: just a Propeller microcontroller and a few passive components. This time, I tried the opposite: building an RFID tag using no application-specific parts.
Read more »RFID based Secured access system implemented on 8051 microcontroller . This is a very useful application of RFID and is very commonly used in institutes, offices, homes and so on. An RFID system consists of a reader device and a transponder. A transponder or tag has a unique serial number which is identified by the reader.
Read more »The 16x2 will have 32 characters in total 16in 1st line and another 16 in 2nd line. Here one must understand that in each character there are 5x10=50 pixels so to display one character all 50 pixels must work together. But we need not to worry about that because there is another controller (HD44780) in the display unit which does the job of controlling the pixels.
Read more »I’ll try to show you how I turned your typical Raspberry Pi, combined with some cheap components and IP Cameras, into a state-of-the-art home monitoring system capable of recording video, turning power outlets on or off and sensing movement.
Read more »In this article, you will learn how to improve your collection of Snap Circuits blocks by adding a 555 Timer IC. You will learn the functions the pins on the 555 chip. You will learn that when the 555 is in astable mode, the output of pin 3 is a continuous stream of pulses called a square wave that can be heard on a speaker as a tone.
Read more »Although its name is “Clap switch”, but it can be turned ON by any sound of about same pitch of Clap sound. The main component of the circuit is the Electric Condenser Mic, which has been used as a sound sensor.
Read more »The circuit works on two conditions - one is presence of light in its location and second is presence of human being, only when these two conditions are met, the controller turns the backup light ON.
These two conditions are tested by two sensors one is LDR and other is Motion sensor module. The LDR senses the presence of light and Motion sensor detects the presence of a human being in its range.
The reason to build a robotic drum is because it is plain super-awesome. It keeps a beat like clockwork. You can slow down and speed up any drum beat with precision and ease. It can even play things a real human drummer could never do.
Read more »