Happy New Years! The January issue of Circuit Cellar magazine is coming soon. Don’t miss this first issue of Circuit Cellar’s 2019 year. Enjoy pages and pages of great, in-depth embedded electronics articles produced and collected for you to enjoy.
Not a Circuit Cellar subscriber? Don’t be left out! Sign up today:
Here’s a sneak preview of January 2019 Circuit Cellar:
TRENDS & CHOICES IN EMBEDDED COMPUTING
Comms and Control for Drones
Consumer and commercial drones represent one of the most dynamic areas of embedded design today. Chip, board and system suppliers are offering improved ways for drones to do more processing on board the drone, while also providing solutions for implementing the control and communication subsystems in drones. This article by Circuit Cellar’s Editor-in-Chief Jeff Child looks at the technology and products available today that are advancing the capabilities of today’s drones.
Choosing an MPU/MCU for Industrial Design
As MCU performance and functionality improve, the traditional boundaries between MCUs and microprocessor units (MPUs) have become less clear. In this article, Microchip Technology’s Jacko Wilbrink examines the changing landscape in MPU vs. MCU capabilities, OS implications and the specifics of new SiP and SOM approaches for simplifying higher-performance computing requirements in industrial applications.
Product Focus: COM Express Boards
The COM Express architecture has found a solid and growing foothold in embedded systems. COM Express boards provide a complete computing core that can be upgraded when needed, leaving the application-specific I/O on the baseboard. This Product Focus section updates readers on this technology and provides a product album of representative COM Express products.
MICROCONTROLLERS ARE DOING EVERYTHING
Connecting USB to Simple MCUs
Sometimes you want to connect a USB device such as a flash drive to a simple microcontroller. Problem is most MCUs cannot function as a USB host. In this article, Stuart Ball steps through the technology and device choices that solve this challenge. He also puts the idea into action via a project that provides this functionality.
Vision System Enables Overlaid Images
In this project article, learn how these Cornell students Daniel Edens and Elise Weir designed a system to overlay images from a visible light camera and an infrared camera. They use software running on a PIC32 MCU to interface the two types of cameras. The MCU does the computation to create the overlaid images, and displays them on an LCD screen.
DATA ACQUISITION AND MEASUREMENT
Data Acquisition Alternatives
While the fundamentals of data acquisition remain the same, its interfacing technology keeps evolving and changing. USB and PCI Express brought data acquisition off the rack, and onto the lab bench top. Today solutions are emerging that leverage Mini PCIe, Thunderbolt and remote web interfacing. Circuit Cellar’s Editor-in-Chief, Jeff Child, dives into the latest technology trends and product developments in data acquisition.
High-Side Current Sensing
Jeff Bachiochi says he likes being able to measure things—for example, being able to measure load current so he can predict how long a battery will last. With that in mind, he recently found a high-side current sensing device, Microchip’s EMC1701. In his article, Jeff takes you through the details of the device and how to make use of it in a battery-based system.
Power Analysis Capture with an MCU
Low-cost microcontrollers integrate many powerful peripherals in them. You can even perform data capture directly to internal memory. In his article, Colin O’Flynn uses the ChipWhisperer-Nano as a case study in how you might use such features which would otherwise require external programmable logic.
TOOLS AND TECHNIQUES FOR EMBEDDED SYSTEM DESIGN
Easing into the IoT Cloud (Part 2)
In Part 1 of this article series Brian Millier examined some of the technologies and services available today enabling you to ease into the IoT cloud. Now, in Part 2, he discusses the hardware features of the Particle IoT modules, as well as the circuitry and program code for the project. He also explores the integration of a Raspberry Pi solution with the Particle cloud infrastructure.
Hierarchical Menus for Touchscreens
In his December article, Aubrey Kagan discussed his efforts to build a display subsystem and GUI for embedded use based on a Noritake touchscreen display. This time he shares how he created a menu system within the constraints of the Noritake graphical display system. He explains how he made good use of Microsoft Excel worksheets as a tool for developing the menu system.
Real Schematics (Part 2)
The first part of this article series on the world of real schematics ended last month with wiring. At high frequencies PCBs suffer from the same parasitic effects as any other type of wiring. You can describe a transmission line as consisting of an infinite number of infinitesimal resistors, inductors and capacitors spread along its entire length. In this article George Novacek looks at real schematics from a transmission line perspective.