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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

Creating a DCO-based Audio Synthesizer With an Arduino Nano

In this project, learn to create a digitally-controlled oscillator or DCO-based audio synthesizer with an Arduino Nano or an Arduino Uno.

April 09, 2023 by Darby Hewitt

Learn to Build a Photoelectric Sensor System Using an Arduino Uno and OpenPLC

Since photoelectric sensing can be achieved with electrical, electromechanical, and electronic components, learn to build, test, and implement a prototype photoelectric switch using off-the-shelf components with Arduino OpenPLC.

March 12, 2023 by Don Wilcher

Designing a Quadrature Network Using an All-pass Filter

Quadrature networks convert a single input signal into two outputs with a 90-degree phase difference. This article explains how to design quadrature networks using all-pass filters.

December 23, 2022 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

TinyML In Action—Creating a Voice Controlled Robotic Subsystem

We’ll be walking you through creating a robotic subsystem with a voice-activated motor leveraging machine learning (ML) and an Arduino Nano 33 BLE Sense.

July 03, 2022 by Jake Hertz

Construction of a Guitar Amplifier

This article explains the theory and the construction of the circuit of a 10W practice guitar amplifier.

November 29, 2020 by Teja Sai Marellapudi

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 Build an Analog Sensor and Analog Output Using Microchip’s RN487x Bluetooth Module

Learn how to hook up an analog input (potentiometer) and output (LED) using a Microchip BLE module.

October 21, 2019 by Aaron Hanson

How to Build a Digital Input and Digital Control Using Microchip’s RN487x Bluetooth Module

Learn how to use a Microchip module to prototype digital input and digital control peripherals.

October 13, 2019 by Aaron Hanson

Build Your Own Voice-Activated Home Automation System with the Gentleman Maker’s Posh Butler

Learn how to use a Raspberry Pi to make your own posh home automation system!

February 24, 2019 by Robin Mitchell

Never Run Out of Tea Again! How to Build the Gentleman Maker’s Intelli-T Raspberry Pi Sensor Alarm

Never run out of tea again! The Intelli-T uses a weight sensor and a Raspberry Pi to alert you when your tea supply is running low.

February 12, 2019 by Robin Mitchell

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

Put an End to Stockings Full of Coal with the Raspberry Pi Santa Detector

For most, the name "Father Christmas" conjures images of toys and gadgets. But for this gentleman maker, the name brings misery. Be sure to stockpile your Arduino, Raspberry Pi, and Particle Photons; it's time to catch Saint Nick red-handed.

December 21, 2018 by Robin Mitchell

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

Make Your Own Home Brewing Sensor Kit with the Gentleman Maker’s Adafruit IO SmartBrewer

Have a party coming up in the next few weeks that you want to make extra posh? Try making your own extra-special brew with the Gentleman Maker's SmartBrewer! Make sure you have an Adafruit IO account ready to go and your Particle Photon on hand.

December 06, 2018 by Robin Mitchell

Protect Your Personal Castle With the Gentleman Maker’s Photon Trebuchet

In this Gentleman Maker project, we will use Particle Photon boards to power a motion-sensing trebuchet that can fend off all your mischievous intruders.

September 27, 2018 by Robin Mitchell

How to Design a Super Simple Sensor System for Industrial Monitoring Applications

This article describes an Ethernet-connected subsystem of a larger modular sensor system designed for industrial or smart home sensing and monitoring. We will discuss a custom sensor subsystem developed for this application.

September 12, 2018 by Mark Hughes

How to Build a Class-D Power Amp

Learn how to build your own Class D power amplifier—one of the most efficient ways to listen to music.

August 29, 2018 by Cezar Chirila

Protect Your Summer Harvest with the Gentleman Maker’s Raspberry Pi and Arduino Dog Corrector

In this episode of the Gentleman Maker, we're using a Raspberry Pi and an Arduino Uno to stave off the onslaught of dogs trying to eat every single plant in our garden.

August 09, 2018 by Robin Mitchell