Measure humidity and temperature on one TTL line
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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Unusual frequency compensation gives this logarithmic converter a 100 µs time constant from 1 mA...
The circuit draws so little current that the shelf-line of the battery is the limiting factor....
Keyboards can be slotted into two categories, at least as far as the manner that the switches...
The telephone-line tester consists of nothing more than a meter (that`s used to measure line...
An awful thing happened a few weeks ago. I ran out of telephones to restore. All my payphone...
This LED (Light Emitiing Diode) display consist of 10 LEDs to indicate the level of an input...
This circuit uses the LM358 operational amplifiers (or any single supply op amp) to generate a...
The following schematic has been taken from buildcircuit. com. The following circuit can work as...
It looks as if they are highly prone to harmonics meaning in this case, that if the resonator is...
The Mark III conductivity-temperature-depth (CTD) profiler has been the mainstay of modern...
The circuit that I`ve described is a one-JFET design without much gain. You can significantly...
As shown, the controller includes a buck rectifier circuit 555 multivibrator, lantern control...
Circuit using the form shown in Figure 1-36, the feedback circuit and the bias circuit...
The metal detectors can be classified according to their principle of operation in those three...
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