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Custom Microcontroller Design: Hardware, Tools, and Toolchain

Custom Microcontroller Design: Hardware, Tools, and Toolchain

This is Part 1 of a step-by-step guide to bringing custom microcontroller designs to life.


The Why and How of Differential Signaling

The Why and How of Differential Signaling

Learn about the important characteristics, benefits, and applications of differential signaling, as well as the proper layout techniques for differential signals.


How to Build a Touchless MIDI Controller with Arduino

How to Build a Touchless MIDI Controller with Arduino

Learn how to build your own touchless MIDI controller using an Arduino... video and code file included.


Projects Nov 03, 2016 by Evan Kale
Analyzing Circuits via Source Transformation

Analyzing Circuits via Source Transformation

This article uses examples to explain the technique of source transformation.


C-BISCUIT: Layout and Assembly for the Robot Control Board

C-BISCUIT: Layout and Assembly for the Robot Control Board

We’ll discuss some important layout and manufacturing concepts as we look at the PCB for the Robot Control Board.


Projects Oct 25, 2016 by Robert Keim
How to Design a Bluetooth Low Energy Circuit with Sensor Technology

How to Design a Bluetooth Low Energy Circuit with Sensor Technology

Tutorial on designing a Bluetooth Low Energy (BLE) circuit with the ability to measure 9-axis motion, humidity, and temperature.


C-BISCUIT: Schematic Design for the RCB—Power, Stepper

C-BISCUIT: Schematic Design for the RCB—Power, Stepper

We’ll continue our discussion of the C-BISCUIT demo bot by looking at portions of the RCB schematic that weren’t covered in the previous article.


Projects Oct 07, 2016 by Robert Keim
C-BISCUIT: Schematic Design for the RCB—Microcontroller, Motor Controller

C-BISCUIT: Schematic Design for the RCB—Microcontroller, Motor Controller

In this article we’ll take a close look at two sections of the custom-designed control board for the C-BISCUIT demo bot.


Projects Sep 21, 2016 by Robert Keim
Build an Arduino BLE-Enabled Indoor Air Quality Monitor

Build an Arduino BLE-Enabled Indoor Air Quality Monitor

Use an Arduino/Genuino 101 with iAQ-Core air quality and HIH-6131 temperature/humidity sensors to make an Indoor Air Quality Monitor with Bluetooth low energy (BLE) connectivity.


Create a PID Controller on the NI myRIO—The Hardware

Create a PID Controller on the NI myRIO—The Hardware

In this short project article series, we will implement a simple PID controller using LabVIEW with a hobby DC servo motor and NI myRIO.


Projects Sep 12, 2016 by Mark Narvidas
C-BISCUIT: Robot System Architecture

C-BISCUIT: Robot System Architecture

The C-BISCUIT saga continues as we combine the various system components into a demo bot.


Projects Sep 08, 2016 by Robert Keim
Retro Builds: DIY Photolithography Microfeature Fabrication

Retro Builds: DIY Photolithography Microfeature Fabrication

Learn how to use photolithography to shrink a design by as much as a factor of 40.


Projects Sep 07, 2016 by Robin Mitchell
Inspecting Electronic Circuits with an Audible Circuit Probe

Inspecting Electronic Circuits with an Audible Circuit Probe

When inspecting electronic circuits, most measurements are displayed visually. This tool provides audible feedback to augment your analyses.


How to Build Your Own Discrete 4-Bit ALU

How to Build Your Own Discrete 4-Bit ALU

In this project, we will build the heart of a simple 4-bit CPU, the ALU (Arithmetic Logic Unit).


Projects Aug 18, 2016 by Robin Mitchell
Build a Wireless “Tipping Bucket” Rain Gauge, Part 2—Adding the Transmitter

Build a Wireless “Tipping Bucket” Rain Gauge, Part 2—Adding the Transmitter

A tipping bucket rain gauge is a clever way to measure rainfall. Learn how to add wireless capability, a PICAXE microcontroller, and an LCD display to your weather station.


Build a Wireless “Tipping Bucket” Rain Gauge, Part 1—Assembling the Bucket

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.


DIY Synth Series Part 1 — The Exponential VCO

DIY Synth Series Part 1 — The Exponential VCO

Build a 1V octave voltage-controlled oscillator (VCO) module and create your own analogue synth sounds.


Projects Aug 08, 2016 by Robin Mitchell
Digi-Key’s Scheme-It: Schematics and System Diagrams

Digi-Key’s Scheme-It: Schematics and System Diagrams

This article will provide a brief overview of the capabilities and advantages of using Scheme-It when starting a new project, especially when working with a group.


Stencil Design for Exposed-Pad Packages

Stencil Design for Exposed-Pad Packages

A properly designed solder stencil helps to ensure successful reflow soldering with IC packages that have an exposed thermal pad.


Thermal Design with Exposed-Pad Packages

Thermal Design with Exposed-Pad Packages

This technical brief discusses thermal design techniques for IC packages—such as QFN, DFN, and MLP—that incorporate an exposed thermal pad.