Fire Alarm with LDR Sensor
Posted on Feb 7, 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 tester is designed to locate stray electromagnetic (EM) fields. It will easily detect both...
One of the unusual features of the out-of-production Programmable Drum Set was its use of touch...
· This circuit is used for analog signal selection or time division multiplexing. As shown, the...
This electronic ignition circuit is intended to be inserted into a car"s conventional ignition...
This device prevents paper notes and memos from being overlooked. A paper note placed between...
With IC SLB0586A from Siemens you can build a simple touch light dimmer circuit that will allow...
When ONLY VR will supply power to circuit, then MCU again will get power from +5V bus, but FTDI...
This was a quick experimental prototype I put together based on an elegantly simple design by...
Here is the circuit diagram of a low voltage /low power DC motor speed controller based on the IC...
In this circuit, a simple calculator, in conjunction with a COB (chip-on-board) from an analogue...
It is good idea to put this circuit in a box and mark/write each LED with number 1 to 6. Now,...
The circuitry of the ZXInterface2 is very simple and is comprised of a single custom made IC...
DAC0832 is a memory device having two input engrave a D/A converter chip, can be connected...
Driving series white LED, flowing through the same song in each white LED current, it is possible...
characters left: