Remote thermometer
Posted on May 16, 2012
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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 uWatch comes as a kit of parts. All of the electronic SMD parts on the PCB are pre-assembled....
This circuit will detect AC line currents of about 250 mA or more without making any electrical...
This circuit can generate a European police-car siren, bird noises, spaceship sounds, etc. In...
The basis ofthe beam splitter is a 555 timer connected as an astable multivibrator. Signals at...
This audio amplifier designed uses two LM3886 per channel, in parallel circuit, based on the...
This project consists of a small, portable DJ mixer powered by a 9V dc external supply adaptor or...
A "power button" that is actually two buttons; one on, one off. This needs to switch on the order...
A solar charger circuit is used to charge lead acid batteries or Ni-Cd with solar power. Circuit...
Here`s a design circuit for temporary lamp circuit is very helpful in emergency situation or in...
When the switch is pressed C3 charges up through R4 with a time constant of 0. 47 seconds and...
This circuit inverter converts 12V DC battery to AC 22oV as the replacement of home energy. The...
All ATL-3 loop windings are centre tapped and balanced w. r. t. their amplifier/receiver chassis...
The DE2 board provides four pushbutton switches. Each of these switches is debounced using a...
It had been only a little over a decade since the transistor was invented when this article...
I recently uncovered this schematic, that seems to be authentic and does not feature the 555...
Elliot vented 2A3PP line, is also very simple, the key is the quality of the output of cattle....
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