Light Sensor Circuits
Posted on Feb 6, 2014
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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.....
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The whistle switch allows you to turn on, or off, an appliance by whistling at it. I originally...
A relay-based on/off controller on the other hand can be very efficient. A typical relay has a...
This circuit uses the versatile MAX038 function generator. Although in this circuit some of the...
A serial interface and bias supply for the Seiko-Epson G1216N000 using an AT90S2313 because there...
I recently purchased 10 SLM1608 (SLM1606) LED matrix display units from Ebay (you might also...
Controlling a relay with stm32 micro controller. For the isolation I have used a 4N33...
This circuit is allows you to use a cheap loudspeaker as a microphone. Sound waves reaching the...
Using high voltage transistors can be designed a DC power supply that can provide a supply...
Circuit is based basically on quite well tested my simple microphone preamplifier. I have built...
The MT-2 Metal Zone ™ is one the most popular guitar pedals, providing over-the-top, insane...
We used buffer IC`s (7417, 7414) to isolate the signals to and from the Arduino. This protected...
The picture to the left is a high quality radio transmitter for the A. M. broadcast band. The...
As Figure: when the operation of the circuit as long as the timing of the reset pulse to the...
As shown, the long wire current loop transmission will be introduced radio frequency (RF)...
Electronic ballasts have a wide operating voltage range, fast start working no noise, no flicker,...
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