Linear Capacitive Proximity Sensor
https://www.electronics-lab.com/project/linear-capacitive-proximity-sensor/
The project presented here is an analog capacitive proximity sensor. The circuit is from Texas Instruments application note. Most conventional capacitive proximity sensors produce a “1” or “0” output, this circuit produces a DC output that is a function of the size and relative permittivity of an object passing between the sense capacitor plates. Different […]
Liquid-Level Monitoring Using a Pressure Sensor – Bar-Graph Display
https://www.electronics-lab.com/project/liquid-level-monitoring-using-a-pressure-sensor-bar-graph-display/
This project allows users to monitor the liquid level on a Bar-Graph display. The liquid level is measured using a pressure sensor, the sensor is placed on top of the tank and is connected to an open-ended tube that is submerged in the water tank. The amount of water in the tank creates a proportional […]
Over Speed Sensor – Over Speed Alarm using Magnetic Pickup Sensor
https://www.electronics-lab.com/project/over-speed-sensor-over-speed-alarm-using-magnetic-pickup-sensor/
This is an over-speed sensor module, that provides an audible warning and signals output when the speed of a machine is above a set point. The module can be used in applications such as Engines, Machines, Sports machines, and Fitness Equipment. The speed of the machine or engine can be detected using magnetic pickup sensors. […]
Under Speed Warning Alarm for Magnetic Pickup sensor – Frequency Controlled Switch
https://www.electronics-lab.com/project/under-speed-warning-alarm-for-magnetic-pickup-sensor/
This is an under-speed sensor module that provides an audible warning and signals output when the speed of a machine is below the set point. The module can be used in applications such as Engines, Machines, Sports machines, Fitness Equipment, Speed of the machine or engine can be detected using a magnetic pickup sensor. The […]
3 Channel Capacitive Touch Sensor with I2C
https://www.electronics-lab.com/project/3-channel-capacitive-touch-sensor-with-i2c/
The project described here is a 3 channel capacitive touch sensor based on CAP1203 chip from Microchip which is a multiple-channel capacitive touch sensor controller. It has 3 x individual capacitive touch sensor inputs with programmable sensitivity for use in touch sensor applications. 3 x touchpads are provided on PCB to detect the touch. Each […]
Precision Thermocouple Amplifier (Thermocouple to Digital Converter with Linearization – SPI Interface)
https://www.electronics-lab.com/project/precision-thermocouple-amplifier-thermocouple-to-digital-converter-with-linearization-spi-interface/
This precision thermocouple sensor module performs cold-junction compensation and digitizes the signal from any type of thermocouple. The output data is formatted in degrees Celsius. The converter resolves temperatures to 0.0078125°C, allows readings as high as +1800°C and as low as -210°C (depending on thermocouple type), and exhibits thermocouple voltage measurement accuracy of ±0.15%. The […]
Humidity Meter Using OLED Display – Arduino Compatible
https://www.electronics-lab.com/project/humidity-meter-using-oled-display-arduino-compatible/
This is an easy to build, very compact, and low profile Arduino compatible platform to build a humidity meter/Gauge using a 0.96Inch OLED display. The project consists of Atmega328 microcontroller, 0.96Inch OLED display, 3.3V regulator, and HIH5030 analog humidity sensor from Honeywell. The HIH5030 sensor provides an analog voltage output, the analog voltage is near […]
Humidity Sensor – Humidity to Frequency Output
https://www.electronics-lab.com/project/humidity-sensor-humidity-to-frequency-output/
This sensor board provides frequency output as per relative humidity value. The project is based on a unique capacitive cell, this relative humidity sensor is designed for high volume, cost-sensitive applications such as office automation, automotive cabin air control, home appliances, and industrial process control systems. It is also useful in all applications where humidity […]
Automatic LED Stairway Lighting – Arduino Compatible
https://www.electronics-lab.com/project/automatic-led-stairway-lighting-arduino-compatible/
This creative idea is suitable for a stairway with 16 stairs, each stair can have a 12V LED. It has two sensors one at the start and one at the end of the stairs and when the sensor trigered at any end it starts a process of lighting each of the steps in a progressive […]
Analog Light Sensor + Light Sensitive Switch using OPT101
https://www.electronics-lab.com/project/analog-light-sensor-light-sensitive-switch/
You may have seen many light-sensitive switch circuits based on an LDR sensor. Usually, the sensitivity of the LDR based light sensor is poor. We wanted a very sensitive light switch hence we decided to make a circuit based on a light sensor rather than LDR. After a little research on the internet, we found […]