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Original Design Schematic of Solar Seeker – Circuit Schematic
Original Design Schematic of Solar Seeker
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Light Sensor Arduino Compatible – Circuit Schematic
Light Sensor Arduino Compatible
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Optical Heart Rate Monitor – Circuit Schematic
Optical Heart Rate Monitor
In this application note, we create a heart rate monitor by using one IR LED and phototransistor pair and observing the waveform at the phototransistor output. ...
PID Temperature Control circuit schematic – Circuit Schematic
PID Temperature Control circuit schematic
Connect the components. Take note of the connections for the transistor. Connect the 22 ohm load resistor and thermistor in a way that they make good thermal co...
Ultrasonic Parking Sonar – Circuit Schematic
Ultrasonic Parking Sonar
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water level indicator controller pic – Circuit Schematic
water level indicator controller pic
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solar tracker system using lm358 – Circuit Schematic
solar tracker system using lm358
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LM324 Circuits and Projects – Circuit Schematic
LM324 Circuits and Projects
The solar panels are operating at optimal parameters when they are at the perfect right angle to the sun. Unfortunately this is accomplished only if solar panel...
Electrical Live Wire Detector – Circuit Schematic
Electrical Live Wire Detector
This circuit can detect only electrical wires connected to the mains (live wire). It has an LED for visual signalization and a buzzer for audio. As the electric...
Infrared Model Train Detector Circuit – Circuit Schematic
Infrared Model Train Detector Circuit
This simple and economical IR model train detector circuit is intended especially for those hobbyists who wish to add a smart sensor to detect trains on their m...
Automatic Fan Controller Circuit – Circuit Schematic
Automatic Fan Controller Circuit
The automatic fan controller circuit shown in the schematic has 2 comparators with different triggering points that are independently adjustable. LM135 or.....
Non-Contact Proximity Switch Circuit – Circuit Schematic
Non-Contact Proximity Switch Circuit
Simple, highly sensitive capacitive ON/OFF switch pads change the state of a latch and turn on an LED without requiring actual physical human contact. The pad m...
DIY Solar Tracker System Circuit – Circuit Schematic
DIY Solar Tracker System Circuit
When the sun position is changing so does the illumination level on the LDRs and the input voltage for the window comparator is no longer half of the supply vol...
Vibration Impulse Counter – Circuit Schematic
Vibration Impulse Counter
This is a take off from the previously posted bicycle anti-theft alarm. One commenter indicated a desire to adapt it to a threshold step plate vibration de.....
Soil Moisture Tester Circuit – Circuit Schematic
Soil Moisture Tester Circuit
For those of us who don t like to get their hands dirty, this simple soil moisture tester quickly checks the state of their plants and how much attention t.....
Greenhouse Heater Temperature Control Project – Circuit Schematic
Greenhouse Heater Temperature Control Project
This is simply (4) 1N4148 diodes connected in series with a thermal anticipation resistor (R1) heat shrunk together at the end of a (3) wire signal cable ”it ...
Temperature Relay Circuit – Circuit Schematic
Temperature Relay Circuit
This simple temperature relay circuit can be used to signal a fire or setpoint for temperature monitoring function. You need to adjust P1 so that T1`s base.....
Simple Water Detector Circuit – Circuit Schematic
Simple Water Detector Circuit
This simple water detector circuit uses alternative voltage in order to prevent the corrosion of the electrodes. It is easy to build and uses N1 as a trigger Sc...
Temperature Controlled Relay Circuit – Circuit Schematic
Temperature Controlled Relay Circuit
This temperature controlled relay circuit is a simple yet highly accurate thermal control circuit which can be used in applications where automatic tempera.....
Lie Detector Circuit – Circuit Schematic
Lie Detector Circuit
This electronic lie detector circuit project will give two readings: one for difficult questions for the subject and another to show its emotional state in.....