keypad interfacing with lpc2148 arm7 slicker
Posted on Feb 5, 2014
Related Circuits
New Circuits
-
This project fits more for custom made battery casing that can have more space to hide things inside. This switch with few alterations can be used for any other project as well but is designed based on e-bike needs! This project use a clever functionality of.... -
The circuit described here uses ultrasonic oscillations and operates based on the propagation velocity of these oscillations in the air. Thus, we can easily determine the distance of two points if the time within which the wave travels this distance is.... -
Sometimes the precious metals are hidden too deep and are not detected except with complicated devices. In many cases, however, small pieces of precious metal buried near the surface can be detected by relatively simple means. Everyone is very attractive to.... -
Many times for various reasons we forget or can not water the plants that we have in our homes. And many humidity sensors units just notify us with a beeping sound or with a flashing light, that the pot needs watering. But what if we are away from home? This.... -
The principle behind a metal detector is really very simple. Proof of this is the circuit that follows, in which it proves that the construction of a metal detector can be done in the minute, with few components that we find very easily everywhere. With the.... -
The sub-harmonic bass generator is a sound producing unit for guitars. The sound it produces looks very much like that of the bass guitar. The octave generator is sometimes quite unusual since it does not produce any of the usual ways of coloring the sound,.... -
In the past the sounding (sea bottom measurement) was done with the "bullet", that is, with a heavy lead object that the seamen plucked into the sea hung from a calibrated rope. As soon as the "bullet" reached the bottom, the depth appeared directly from the.... -
This Amplifier was designed to have the following specifications: Distortion less than 0.1% at full power of 100W even at 20KHz. Power has to be attributed to an extended bandwidth. The output transistors must be protected against short circuits. The power.... -
A series of LEDs serve to alert the gardener when plants need water. Using two conventional digital integrated LEDs and a series of LEDs, we make a very useful device for gardening. The device detects the amount of water in the pot and alerts the grower.....
.
This circuit is a double direction flash. Similar to Digital Ping- Pong 1, there is a movement of...
Amplifier circuit with IC STK is tough and good quality. In this article an amplifier circuit...
I first tried a lot of different circuit combinations with alligator clips and different...
The circuit is bell timer. This new project uses AT89S52 microcontroller and I2C EEPROM to store...
A microcontroller (MCU) is a small computer in a single integrated circuit consisting of a CPU is...
This is probably the simplest Circuit to test a Servo, This circuit tests the speed of servo....
The FM Remote Control Receiver` (available on this website in Infra-red circuits section) has a...
At switch on, C6 will charge via R11, this acts as the exit delay and is set to around 30...
A very useful switch that can be controlled from any channel on the typical Futaba or JR radio...
This is a variation of the the Electron Coupled Oscillator circuit, pioneered by Dow in 1931....
100kHz-30MHz active antenna with small size, good performance, making simple, low cost and so on,...
As shown for the TDA8358J actual application circuit. Television signal processing circuit input...
Figure 1-123 is an internal block diagram of the TDA3810 o The circuit can operate in three modes...
characters left: