Dual over-under temperature monitor
Posted on Feb 20, 2013
New Circuits
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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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There are 4 timers in PIC18 which are timer0 to timer3. Timers are used when precise timing event...
IC3 acts as an oscillator which operates if the output of ICl is high. With the values used the...
The iriput signal is fed via SKI to the first active stage built around ICl. Configured as a...
IC1 is a dual operational amplifier. In this circuit each op-amp is used simply as a voltage...
With a magnetic compass ensure that both pickups have a South polarity on the top of the pickup....
Another method of testing the received signal strength on a Symphony based wireless network is...
Not drive a solenoid directly from your Arduino. It requires more current than you can provide...
The human eye is amazingly adept at tracking moving objects. The process is so natural to humans...
A very simple LED torch can be designed using the NSI45090JDT4G adjustable constant current...
The metal detector circuit is composed of the probe oscillator, PLL phase-locked loop circuit and...
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