Circuit Cellar
Off-Grid Communication in Your Pocket
FloraNet—A LoRa Digital Radio Network Accessible with Any Smartphone
10+ min |
July 2025
Circuit Cellar
Play Harmonies on a Single Trumpet
Using a Capacitive Touch Slider, Raspberry Pi 4, and Arduino Uno
10+ min |
July 2025
Circuit Cellar
Datasheet: Industrial Controllers
The Brains of Modern Industry
2 min |
July 2025
Circuit Cellar
The Future of Edge Al Multicore Technology Drives AI at the Edge
The 32-bit architecture changed the trajectory of the embedded market.
5 min |
July 2025
Circuit Cellar
Smart Home Gateway with PHPOC Black Part 1: Temperature and Humidity Server
The PHP on Chip Black is a programmable IoT MCU board. In this article series, Raul uses it to develop a smart home gateway prototype.
10+ min |
July 2025
Circuit Cellar
Power Profiler for Accelerated Embedded Hardware Development
Streamlining the Development Process with Efficient Power Analysis
10+ min |
July 2025
Circuit Cellar
A Differential Scanning Calorimeter Using a Cellphone and GUI-O User Interface
In this month’s article, Brian describes how he built his latest version of a Differential Scanning Calorimeter—the first version of which he designed 20 years ago.
10+ min |
July 2025
Circuit Cellar
Datasheet: AC-DC Power Supplies
More Power — Smaller Footprints
1 min |
June 2025
Circuit Cellar
Zero Trust Architecture for the Internet of Things
Discover how Zero Trust Architecture is transforming IoT security, moving beyond outdated perimeter defenses to ensure every device, user, and service is authenticated and secure. Learn why adopting ZTA is essential for modern IoT design and how it can boost security, flexibility, and trust in your connected systems.
9 min |
June 2025
Circuit Cellar
The Edge Computing Paradigm
Advantages, Challenges, and Applications in the IoT
10+ min |
June 2025
Circuit Cellar
The Future of Graphical User Interfaces
Efficient GUI Design Experience Flow with Microchip Graphics Suite (MGS)
5 min |
June 2025
Circuit Cellar
"Fish Sense"
A Monitoring and Control System for Aquariums
10+ min |
June 2025
Circuit Cellar
Improve Portability and Reusability in Embedded Systems with West
Discover how West, a meta-tool from the Zephyr real-time operating system (RTOS) ecosystem, revolutionizes embedded software development by streamlining project management across multiple repositories. This article dives into practical applications of West for enhancing portability and reusability in complex embedded systems, offering engineers actionable insights to optimize their workflows.
9 min |
June 2025
Circuit Cellar
Crystal Calibration with GPS Redux
Stuart revisits an article from 2020 with a different approach, exploring the calibration of microcontroller clock crystals using GPS technology, aimed at enhancing timing accuracy in various applications. Key findings highlight the importance of calibration for long-term timing precision, detailing methods to achieve significant improvements in accuracy.
10+ min |
June 2025
Circuit Cellar
Telecommunications
Bandwidth and So Much More
10+ min |
June 2025
Circuit Cellar
An Embedded Designer Looks at Mobile App Development
Releasing Your Flutter App to the App Stores
10 min |
June 2025
Circuit Cellar
LapLogic Wireless Automotive Telemetry System
Imagine driving on a racetrack, pushing your car to its limits, and wanting detailed insights beyond basic metrics of speed or engine RPM. What about less obvious stats such as engine load, fuel efficiency, or intake air temperature? What if you could access this hidden data—and more—in realtime, right from your smartphone?
10+ min |
May 2025
Circuit Cellar
Aerospace and Defense Outshining Science Fiction
Explore cutting-edge tech in aerospace and defense. This article examines recent innovations, their direct impact on military operations, and the integration of AI and cybersecurity. Gain insights into future trends that are reshaping the industry and enhancing capabilities.
10 min |
May 2025
Circuit Cellar
Wake-Up Receivers Extending Operational Periods in Battery-Powered Applications
Wake-up receivers allow battery-powered IoT devices to conserve battery life by remaining in a standby state until needed. In this article, Abel discusses the importance of wake-up receivers for achieving low energy consumption, and describes how he built a demonstration prototype with an integrated RFicient wake-up receiver on the PCB.
10 min |
May 2025
Circuit Cellar
Implementing the Matter Protocol
Using the Arduino Nano Matter or Sparkfun Thing Plus Matter Boards
10+ min |
May 2025
Circuit Cellar
GigaDevice's Dual-Power Supply SPI NOR Flash for 1.2V SoCs Halves Read Power Consumption
GigaDevice, a leading semiconductor company specializing in flash Memory, 32-bit microcontrollers (MCUs), sensors, analog products and solutions, has unveiled the GD25NE series of dual-power supply SPI NOR Flash, designed specifically for 1.2V system-on-chip (SoC) applications.
1 min |
May 2025
Circuit Cellar
Direct Insight Creates QNX 8 BSP for QS93 i.MX93 Solder-Down SoM
Direct Insight, the UK-based technical systems integrator and reseller of system-on-module (SoM) and other embedded systems, has created a QNX 8 BSP (board support package) for Ka-Ro’s QS93 solder-down module with NXP’s i.MX93 processor.
1 min |
May 2025
Circuit Cellar
Design and Implementation of a 3D-Printed Robotic Actuator
A robotic actuator converts energy into physical motion, enabling a robot to move and interact with its environment. In this article, Maheshwaran and Vairamani describe how they designed and assembled a 3D-printed actuator that combines advanced motion control with real-time monitoring.
10+ min |
May 2025
Circuit Cellar
Macronix Introduces ArmorBoot MX76 for Security and High Performance in Automotive IoT Markets
Macronix, a leading global non-volatile memory (NVM) integrated device manufacturer, has launched its all-new ArmorBoot MX76 series flash memory.
2 min |
May 2025
Circuit Cellar
Trident IoT Software Development Kits For Z-Wave/ZWLR And Zigbee RF SoCs
Trident IoT, is proud to announce the release of its highly anticipated software development kits (SDKS) for its latest line of Z-Wave/ZWLR and Zigbee RF system-on-chips (SoCs).
1 min |
May 2025
Circuit Cellar
Experimenting with CHERI on the Sonata Board
The CHERI extension for RISC-V provides a promising way of designing fundamentally secure systems. I introduced this back in November 2023, but at the time there was no easy hardware to work with. This article introduces the open-source hardware (OSHW) Sonata board, which lets you experiment with CHERIot on a more user-friendly platform.
10 min |
May 2025
Circuit Cellar
A 3-Phase Energy Meter with Multicore Support Using an ESP32 MCU with Voltage and Current Sensors
To continuously monitor energy consumption in his home, and store and communicate the data wirelessly, Gamal built a 3-phase energy meter, using a single ESP32 MCU with dual-core architecture, and voltage and current sensors. In his novel design, one core senses voltage and current and calculates consumed energy, while the other, long-forgotten core handles the user's web requests, logs measurements on an SD card, and displays current, voltage, and cumulative power consumption.
10 min |
May 2025
Circuit Cellar
Datasheet: IoT Boards and Modules A New Era of Connectivity and Intelligence
Dive into IoT board advancements. Breakthroughs in miniaturization, processing power, security, and energy efficiency are transforming design and deployment strategies, revolutionizing the IoT landscape.
2 min |
May 2025
Circuit Cellar
What It Really Takes for a General-Purpose MCU to Function as a Complete AI SOC
Innovative AI-enabled MCUs are transforming endpoint devices by integrating advanced AI capabilities while addressing critical challenges in power and space. This article explores the future of wearable technology and the engineering solutions that make it possible.
8 min |
April 2025
Circuit Cellar
Introduction to Flutter State Management
As Bob continues this article series on Mobile App development from an Embedded System's perspective, he tackles State and State Management in Flutter. As you will see, it is very different from what embedded engineers are used to when we think of state and that misunderstanding can cause no end of trouble if we don't understand it.
8 min |