Bird Feeder Monitor Circuit
Posted on Mar 26, 2013
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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 remote control transmits encoded signals. Each time a key is pressed, the relevant code is...
The circuit can be tuned to respond to signals between 50 MHz and 500 GHz. The economy model is...
Circuits to interlace the Si7135 directly with two popular microprocessors are shown in Figs....
This is the simplest of any programmable oscil lator circuit, since only one stable timing...
Readers who do not care to modify the power supply of an old PC into a suitable halogen power...
Any microcontroller in the ATmegaXX8 family should work, though if you`re going to go to the...
Here is the circuit diagram of an easy to build long range AM transmitter circuit based on three...
The TRF1400 VHF/UHF RZ ASK remote control receiver is specifically designed for RZ ASK...
This simple circuit can be used to activate whatever you like, for example, by connecting it to...
This high voltage generator can generate stable high voltage above 8kV. Its circuit is simple. It...
It provides a fully featured commentator position and a line-level input. The unit has an...
The main circuit uses a two-input NAND gate four digital integrated circuits, wherein the...
When the infrared receiver tube PH302 receives a signal from the remote control, the CX20106A...
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