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.
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…
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,…
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…
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…
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…
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…
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…
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…
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…