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phototransistor Light sensor using Photo Transistor – Circuit Schematic
phototransistor Light sensor using Photo Transistor
A circuit which utilizes a photo-transistor to make a light sensitive switch that is when there is no light in room, the led connected to the photo-transistor l...
accelerometer Can internal PLL affect control logic in MEMS sensor – Circuit Schematic
accelerometer Can internal PLL affect control logic in MEMS sensor
Achieve communication between MCU and accelerometer trough I2C nor SPI. I observed that shorting PLL filter input in device causes no effect on both gyro readin...
detection Sample Application with LHI 778 PIR Sensor – Circuit Schematic
detection Sample Application with LHI 778 PIR Sensor
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sensor Arduino analog signal read problem – Circuit Schematic
sensor Arduino analog signal read problem
The piezo element is only connected to Channel 1 (Arduino A[0] port). The channels Ch 1 Ch 6 are connected to female mono jacks and the ground(GND) wiring is in...
Park-aid – Circuit Schematic
Park-aid
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PIR Motion Detector – Circuit Schematic
PIR Motion Detector
Presented schematic shows how to build simple PIR motion detector sensor. PIR sensors allow you to sense motion, almost always used to detect whether a human ha...
Electronic Thermometer LM35 – Circuit Schematic
Electronic Thermometer LM35
As shown in the schematic, temperature sensor of our electronic thermometer is LM35DZ. There are some kinds of LM35 IC, since it is cheap and easy to find we us...
Ultrasonic switch – Circuit Schematic
Ultrasonic switch
The transmitter part of the circuit is build around IC1(NE 555). The IC1 is wired as an astable multi vibrator operating at 40KHz. The output of IC1 is amplifie...
ds18b20 using 1 wire – Circuit Schematic
ds18b20 using 1 wire
In this Lesson, we will make a digital temperature meter using DS18B20. The connection between temperature sensor and microcontroller will be done through a sin...
Circuit-break locator for the holidays – Circuit Schematic
Circuit-break locator for the holidays
The circuit illustrated here comes to the rescue by sniffing out defective bulbs by capacitively sensing the electric fields they produce ( see the figure ). To...
Simple Light Sensor Circuit Features High Dynamic Range – Circuit Schematic
Simple Light Sensor Circuit Features High Dynamic Range
Ambient light is increasingly being used as a source of energy. To help designers of such systems, this circuit accurately measures ambient light intensity over...
Water-Level Sensor Uses Hysteresis – Circuit Schematic
Water-Level Sensor Uses Hysteresis
This design idea explains how to develop a water sensor circuit that can monitor upper and lower water levels...
Sense Fluid Levels With Capacitance – Circuit Schematic
Sense Fluid Levels With Capacitance
This circuit, which uses a CD4538 retriggerable monostable multivibrator and a CD4011 NAND chip, can sense fluid levels using a variable capacitance ( see the f...
Key Design Aspects Of CMOS Image Sensors Revealed – Circuit Schematic
Key Design Aspects Of CMOS Image Sensors Revealed
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Use Analog Techniques To Measure Capacitance In Capacitive Sensors – Circuit Schematic
Use Analog Techniques To Measure Capacitance In Capacitive Sensors
Capacitive sensors are found in a wide range of equipment, from consumer electronics to industrial/process control. Touch buttons are increasingly found in lamp...
Trigger Circuit Controls Stop-Motion Camera System – Circuit Schematic
Trigger Circuit Controls Stop-Motion Camera System
This version of the trigger circuit for the stop-motion camera system uses an electret microphone for a sonic input, but the designer can substitute an LED and ...
Circuit Reads Encoder Direction of Movement – Circuit Schematic
Circuit Reads Encoder Direction of Movement
Incremental-rotation or linear encoders are very common, but normally they do not provide a direction signal. This design shows an easy way to detect forward or...
Simple Circuit Interfaces 1-Wire Temperature Sensor To A Microcontroller – Circuit Schematic
Simple Circuit Interfaces 1-Wire Temperature Sensor To A Microcontroller
Temperature-indicator and temperature-based products have generated wide interest. There are numerous applications for such devices with many possible solutions...
Capacitive Proximity Sensor Provides Accuracy And Speed – Circuit Schematic
Capacitive Proximity Sensor Provides Accuracy And Speed
Three devices in a quad Schmitt Trigger and a Flip-Flop make a simple but sensitive proximity sensor...
water level sensor circuit – Circuit Schematic
water level sensor circuit
Figure 1 shows a circuit for sensing the water level in a tank and turning on or off a water pump accordingly. The main component of the circuit is the CD-4011 ...