Learn how to modernize embedded software development with CMake, enabling scalable build systems, DevOps, testing, and simulation for efficient workflows.| Circuit Cellar
Explore how eddy currents can be used to measure the thickness of thin copper and aluminum foils using low-cost sensors, a PC, and a USB sound card. Discover practical DIY techniques and the science behind this non-contact measurement method.| Circuit Cellar
Learn how to integrate Amazon Alexa voice control with custom IoT devices using the ESP32 microcontroller. Discover emulation techniques, Arduino Cloud setup, and how to remotely control appliances like a heat pump using Alexa.| Circuit Cellar
In the final part of this series, I discuss the generation of JSON and XML files to send sensor data from the web and database servers to web clients. I also cover upgrading the system from HTTP to HTTPS with the use of an Internet web server on a shared web hosting service. Finally, as a complement to backend development for IoT discussed in the series, I present an example of a frontend web page to graphically display sensor data on a web browser.| Circuit Cellar