Sensor Circuits
- Page 11-
Sense the amount of ambient light and switch the lights on when it was dark out. I was successful in building one on a bread board that used an lm324 (its the only comparator radioshack had) some resistors a trimmer resistor and a photocell. So I went and.... -
The main component used is the ACS712 sensor from Allegro MicroSystems to measure the current. It provides economical and precise solutions for AC or DC current sensing in industrial, commercial and communications systems. Located near the surface of the die.... -
Parts List The circuit was specially designed for shop windows animation as it makes use of a capacitive sensor that is triggered by touch control system .. -
A rear fog lamp has been mandatory for trailers and caravans in order to improve visibility under foggy conditions. When this fog lamp is switched on, the fog lamp of the pulling vehicle must be switched off to avoid irritating reflections. For this purpose,.... -
This Line Following Robot sensor or surface scanner for robots is a very simple, stamp-sized, short range (5-10mm) Infrared proximity detector wired aroun.... -
General purpose circuit of the simple pressure sensor alarm is built around a couple of readily available cheap components. Working of this circuit is str.... -
This circuit uses a thin piezoelectric sensor to sense the vibrations generated by knocking on a surface; eg, a door or table. Basically, it amplifies and.... -
This Super Light Sensor responds to minute fluctuations in light level, auto-adjusting over the range from about 200 lux up to 60, 000 lux (ie, from a modestly lit room to direct sunlight). It has lots of potential uses eg, detecting a car entering a.... -
This circuit shows how to use an ordinary LED as a light sensor. It makes use of the photovoltaic voltage developed across the LED when it is exposed to l.... -
DHT11 is the most inexpensive sensor currently available in the market that provides calibrated digital outputs for temperature and relative humidity. It is availab.... -
Close to human perception and stable color sensing is an ubiquitous problem found in numerous disciplinces, e. g. , in machine vision for classification and recognition or in general intelligent systems, for instance for intelligent illumination systems in.... -
The CCD camera sensor is device that have very useful. This project has small size. But quality is a lot good. We can install with Television easily through the video in terminals. and connects to the video signal modulated to To send a broadcast RF signal.... -
A motion detection alarm circuit using a PIR.SENSOR motion detection, if the move is a positive light from the PIR sensor, triggered by a delay circuit, Q1 and.... -
This be Water Sensor Alarm Circuit for warn the water level , by when sensor point touch the water or the rain. The circuit have a voice loud warn hear.... -
this project use PIC18F25K20 microcontroller to detect if the sensor change state and it will emit a sound from the speaker or piezo, the MCU also detect the voltage of the battery in the startup, the algorithm it s very simple use an interrupt on change to.... -
The water sensor circuit is based on a 555 timer circuit and come common electronic components. The water sensor is made by two metal electrodes arranged very close that a drop of water (liquid) will bridge them. If the liquid ( water ) is very pure you may.... -
This level liquid sensor electronic circuit diagram is based on a common Ca3410 operational amplifier IC. This level liquid sensor electronic circuit use two plates sensors ( two probes ), one for the high level an one for low level. If the level of the.... -
This fluid level sensor circuit is designed for using an ac sensing signal to eliminate electrolytic corrosion on the probes. The ac signal rectified is used to drive T1 transistor that drives a 12 volt relay, that can activate or stop some device. R2.... -
This sensor switch circuit has nine channels and consist of only three integrated circuits and some resistors. Due to high input impedance, 74HC147 allows to use of 4. 7 M resistors to create a logic level "high" to sensor inputs. When one sensor is touched,.... -
This touch sensor switch can is designed using inverters (N1, N2)and some common electronic components. In standby state at the entrances of N1 there is a signal produced by oscillator N3/N4. At the touch sensor hand capacity forms a bridge to the ground for.... -
The objective of this project is to use inexpensive PIR sensor to detect if a human has moved. To build this project I use a PIC18F25K20 microcontroller to detect if the sensor had change state and it will emit a sound from the speaker or piezo, the MCU also.... -
If you are looking for a digital light sensor that is able to measure the intensity of light and easy interface with a microcontroller, Intersil ISL29001 is one such device .. -
Electronics Tutorial about the Hall Effect Sensor and Magnetic Hall Effect Switch which is an Output Transducer used to detect Magnetic Fields.... -
Electronics Tutorial about Light Sensor including Photocells, LDR, Photodiodes, Phototransistors, Photovoltaic Cells and Light Dependent Resistor.... -
Irisys is offering a range of five thermal imaging temperature sensors based on a 16G—16 pixel array offering a choice of temperature range, accuracy and measurement angle. The IRI 1041, IRI 1051 and IRI 1061 are respectively identical to the IRI 1011, IRI.... -
This is a very simple liquid detector that use a relay to open an evacuation van. You can use it for water or any liquid that conduct electricity. Use any PNP transistor that can stand the relay current. Check out the new water level sensor circuit... -
This presence detector or proximity sensor circuit reacts in presence of any conductor object including humans. Sensitivity is adjustable with P1 which will be located at a great distance from the rest of the presence detector circuit. This circuit does not.... -
This Ultrasonic Sensor Circuit consists of a set of ultrasonic receiver and transmitter which operate at the same frequency. When something moves in the area covered the circuit`s fine balance is disturbed and the alarm is triggered. The ultrasonic circuit.... -
Here are 2 heat sensor circuits, first one is build with the 4060 IC, the second one is simpler than the one before and has fewer components. It is an idea.... -
This simple circuit senses heat from electronic devices and gives warning alarm. It is an ideal add on circuit to monitor heat in CD players, Amplifiers etc. The circuit uses 14 stage ripple free binary counter IC CD 4060. It has an internal oscillator and....
New Circuits
-
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.....
Popular Circuits
The function generator features two BNC outputs : one for the high speed [1 to 8 MHz] square...
This is not a sophisticated automatic keyer but it is lot QRP to build and to have fun operating...
What's so special about this circuit? Well, the first third-brake light I installed I had to...
Many a times one needs an extra telephone ringer in an ad joining room to know if there is an...
A light dimmer, a 1 µf capacitor and a 12 V car ignition coil form the simple line powered HV...
A talking compass is made up using a Hall-effect direction sensor (MODI) and an ISD1016 analog...
An Arduino running on 2 or 4 rechargeable NiMH AA batteries. I say 2 because I might boost up the...
Here is another example of using a CD4051 multiplexer, or more accurately a pair of CD4051s in...
DK-5A, DK- 5AD AC power control circuit circuit shown in Figure 6-77. Figure, SBz the closing...
32.768kHz ; In MP3/MP4, mobile phones, laptops and other digital products are provided real-time...