Frequency Shift Keyer
Posted on Feb 12, 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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This design uses a Motorola MPX4115 Silicon Pressure Sensor, a Dallas Semiconductor DS2438 Smart...
This circuit has the CMOS IC doing double-duty performance. The first two inverters operate as a...
A simple solenoid driver uses incandescent lamp filaments as on-indicators to limit power...
This circuit can be used to operate a VCR or CD player from another room. It"s really an...
Martin ustek has modified the project to also include a Sokoban game. Some information about his...
The audio mixer schematic we propose is developed arround 4 amplifiers build inside SSM2024...
Here is a simple and compact flasher circuit that an be used where ever a flashing LED is needed....
The OpenRelief project is building open, modular information solutions for disaster relief , and...
Using the ISL9440 quad-output synchronous buck controller IC can be designed a very simple high...
A very simple FM CB radio receiver can be designed using this electronic diagram below. This FM...
This circuit uses the popular and easy to find LM3914 IC. This IC is very simple to drive, needs...
This design is based on the 18 Watt Audio Amplifier, and was developed mainly to satisfy the...
Build a reprogrammable cartridge. Many things can be done with such a cartridge: You can develop...
Altogether it will cost about US$ 10 and much room on my circuit board. The design is really...
If you want to omit this balance control, such as when using separate pots for the volume...
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