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Latest Test & Measurement Projects

An RMS Detector for a Wideband Voltmeter—Design and Operation

This project demonstrates the design and operation of a root-mean-squared (RMS) detector for inclusion in a wideband voltmeter. The RMS detector is useful for measuring certain signal types, including noise, since it provides an indication of the energy in a signal.

June 25, 2023 by John Woodgate

Designing a Wideband Analog Voltage and Current Meter

Design a wideband analog multimeter to measure AC voltages and currents from 20 Hz to 1 MHz with a selectable sensitivity from 1 mV to 100 V, while the ammeter has a selectable current sensitivity of 10 mA to 10 A.

May 03, 2023 by John Woodgate

Magnetic Field Strength Meter and Calibrator

This project will explain how to develop a system to measure magnetic field emissions at frequencies up to 150 kHz from high-current power cables without cutting or disturbing the cable.

October 28, 2022 by John Woodgate

Predicting Battery Degradation with a Trinket M0 and Python Software Algorithms

Learn how to build a setup that will help you predict a battery's performance as it ages using a Trinket M0 and software algorithms.

December 09, 2019 by Aaron Hanson

How to Design a Precise Inclinometer on a Custom PCB

Learn the design steps for creating your own custom inclinometer PCB.

January 08, 2019 by Mark Hughes

How to Make Your Umbrella into a Weather Station with a Particle Photon

Want to get to-the-minute, location-specific weather information delivered right to your own Adafruit IO dashboard? It's time to assemble your very own SmartBrella.

December 13, 2018 by Robin Mitchell

Hardware Assessment: OPB9000 Reflective Light Sensor from TTElectronics

The OPB9000 is a reflective light sensor from TTElectronics with programmable output and sensitivity levels.

July 27, 2018 by Mark Hughes

A Simple, Compact Power Supply for Analog and Mixed-Signal Systems

This project demonstrates and discusses the performance and functionality of an inductorless ±5 V power-supply circuit.

June 18, 2018 by Robert Keim

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 by Raymond Genovese

How to Build Your Own Function Generator Using Analog Devices’ AD9833

Tired of using your PC or mobile phone as a signal generator? It’s time to upgrade to a standalone one by making it yourself.

January 17, 2018 by Cezar Chirila

High-Speed Waveform Generation with an MCU and a DAC

In this article, we’ll evaluate different firmware strategies in our pursuit of maximum-frequency analog signal generation.

December 08, 2017 by Robert Keim

How to Generate a High-Precision Waveform Using a DAC and a Custom PCB

In this article, we’ll develop firmware that will serve as the basis for high-precision, high-speed signal generation.

December 01, 2017 by Robert Keim

How to Check and Calibrate a Humidity Sensor

How accurate is your humidity sensor? Find out with this project.

November 29, 2017 by Raymond Genovese

How to Build a Tachometer/Speedometer with an Optoelectronic Sensor, a Microcontroller, and a Disc

Learn how to make a tachometer and speedometer using a C8051 microcontroller, an optoelectronic sensor, and a spinning disc.

September 06, 2017 by Nick Davis

Troubleshooting Tools for Your Next Bluetooth LE Project: Ubertooth and the Nordic nRF Sniffer

Bluetooth LE was designed with the IoT in mind. Here are some options for troubleshooting your next Bluetooth LE project.

July 14, 2017 by Mark Hughes

Tools and Techniques for Hot Air Soldering Surface-Mount Components

The best way to solder surface mount devices (SMDs) onto printed circuit boards (PCBs) is with a reflow oven, but when that's not possible, a hot-air station can be successfully used.

April 06, 2017 by Charles R. Hampton

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 by Mark Hughes