2020-09-07 - Richard Quinnell

Touchless control panels for avoiding contaminated surfaces

Design engineers are leveraging existing wireless and sensor technologies to create solutions for avoiding contaminated surfaces in elevators and kiosks.

2020-07-22 - Kendall Castor-Perry

Why DAC and ADC responses droop

Have you ever experienced unexpected droop when you’ve plotted out the frequency response of a signal processing system when you…

2020-06-02 - Kendall Castor-Perry

Synthesize your FIR filters using high-school algebra

This follow-up piece of "FIR Fundamentals" turns the process on its head and builds up complete FIR filters from small,…

2020-05-27 - Hesam Moshiri

DIY hand sanitizer/alcohol dispenser, without an Arduino or MCU

In this article, we will build an automatic hand sanitizer dispenser that uses IR sensors to detect the presence of…

2020-05-26 - Kendall Castor-Perry

Five things to know about prediction and negative-delay filters

How the heck can you build a filter that ‘predicts’ something? Well, it all depends on how high you set…

2020-05-12 - Kendall Castor-Perry

Analyze FIR filters using high-school algebra

This article looks at some fundamental facts about FIR filter responses, using some basic math you might even remember from…

2020-05-11 - Brian Dipert

Why the Raspberry Pi 4 should catch your eye

If you’re basing your next system design on the Arm architecture, the Raspberry Pi Foundation’s various boards are an intriguing…

2020-05-08 - Tim Dhuyvetter

Improving haptic feedback with piezoelectric transducers

Introduction to piezoelectric haptics provides the pros and cons of each and details piezoelectric transducer principles, theory, and modelling along…

2019-10-23 - Bill Schweber

Analog Design Deficiencies Hidden Behind Software

It’s risky to use software to try to fix large-scale hardware-design errors, as the catastrophe of the Boeing 737 MAX…

2019-07-22 - Max Maxfield

Blog: Expect the Unexpected with Control Systems

The designers never considered what would happen if someone activated the locking mechanism whilst the fridge was already in the…