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Test & Measurement
Build Your Own Metal Detector with an Arduino
Building a metal detector using a Colpitts oscillator and an Arduino.
October 03, 2016
Read and Write on NFC Tags with an Arduino
Learn to use an Arduino to read NFC tags and write information on them! Near field communication protocols are what electronic devices can use to communicate and transfer data between each...
October 27, 2015
How to Build a Weighing Scale Using a Load Cell and a Microcontroller
In this project, we're making a weighing scale using a C8051 microcontroller development kit, a load cell, and the Simplicity Studio IDE. The measured weight will be displayed on an LCD...
October 10, 2017
Capturing IMU Data with a BNO055 Absolute Orientation Sensor
The BNO055 is an absolute orientation sensor from Bosch that combines sensor data and a microprocessor to filter and combine the data, giving users their absolute orientation in space....
March 22, 2017
Measuring Temperature with an NTC Thermistor
For this article, we are only concerned with one type of sensor that can measure temperature. This sensor is called a thermistor.
August 15, 2016
How to Check and Calibrate a Humidity Sensor
How accurate is your humidity sensor? Find out with this project.
November 29, 2017
Using a SIM900A to Send Sensor Data to a Website
In this article, I'll show you how I used one of my SIM900A GSM modules to send temperature and relative humidity to my personal website....
February 23, 2017
An Arduino-Controlled Light Sensor
Monitoring the output of a light-dependent resistor, or photoresistor, allows the Arduino to know how light or dark it is. When the light falls below a certain level, the Arduino turns on a...
June 01, 2015
How to Build a Particulate Matter Detector for Air Quality Measurement
Use a Honeywell particle sensor to measure 2.5 µm PM and 10.0 µm PM concentrations in your environment.
March 28, 2018
How to Eliminate Ground Loops with Signal Isolation
This project explains how to isolate signals to eliminate ground loops in electronic systems.
January 29, 2016
Create a Motion-Sensing Alarm with an Arduino and IR Sensors
Infrared (IR) sensors are normally used to measure distances, but they can also be used to detect objects. By connecting a couple of IR sensors to an Arduino, you can make an intruder alarm....
June 02, 2015
Build a Wireless “Tipping Bucket” Rain Gauge, Part 1—Assembling the Bucket
A tipping bucket rain gauge, an RF transmitter and receiver, a PICAXE microcontroller, and an LCD can make a great addition to your weather station....
August 09, 2016
Charles R. Hampton
How to Make an Interactive TCP Server with NodeMCU on the ESP8266
Learn how to connect your device with Linux Screen using the built-in Lua interpreter to set up the file system and connect to the network. Then, learn how to automate the scripting process...
July 22, 2015
Make a GPS Clock With Arduino
Do you need GPS time on your desk? This article will show you how to use a GPS module to get time, date and your location displayed on an LCD with an Arduino....
December 09, 2015
Turning on a Light with Ultrasonic Motion Detection
This project will show you how to connect an ultrasonic sensor and an Arduino to turn on a light when motion is sensed.
May 13, 2016
Embedded PID Temperature Control, Part 3: Implementation and Visualization
We will implement a basic PID (proportional–integral–derivative) controller in firmware and observe the results using an oscope and LEDs....
February 15, 2016
Embedded PID Temperature Control, Part 1: The Circuit
Invoke the power of the PID (proportional–integral–derivative controller)! The key components in this design are an EFM8 microcontroller, a DAC, and the MAX31855 thermocouple-to-digital...
February 01, 2016
Raspberry Pi Project: Control a DC Fan
Control a fan based on the current temperature with a Raspberry Pi!
October 06, 2015
Make a Wireless Thermometer with Arduino
Learn how to use a 433MHz RF module with an ATMega 328P-PU. In this article, we'll make a circuit with a DHT11 sensor and a RF transmitter. We'll also make a receiving circuit with a 433MHz RF...
October 29, 2015
Build Your Own RFID Technology Using an Arduino MEGA
In this article, we are going to learn some basics about RFID technology and use an Arduino MEGA to a play around with a popular RFID module, the ID12LA....
July 20, 2016
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