CATEGORIES

Building a Wi-Fi Router Watchdog
Circuit Cellar

Building a Wi-Fi Router Watchdog

Dev created a watchdog for a Wi-Fi extender using a Raspberry Pi Pico. This monitors Wi-Fi connectivity for his smart home lighting system, which would require a reset twice a year due to rapid power interruptions.

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8 mins  |
January 2025
Holiday Hangover Hardware Hacking
Circuit Cellar

Holiday Hangover Hardware Hacking

Having too much cheer during the holidays? In this month's article, Colin offers a diversion from the jolly season by urging developers to retreat to the basement to brush up on hardware hacking skills. He shows how a low-cost Raspberry Pi Pico and a TP-Link Tapo C200 smart IP camera could become the next automated bird deterrent or a home automation server.

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8 mins  |
January 2025
Create Your Own PCBs with a CNC Milling Machine
Circuit Cellar

Create Your Own PCBs with a CNC Milling Machine

Using KiCad, CopperCAM, and Candle Software

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10+ mins  |
January 2025
Performance Bottlenecks in Embedded Linux Solutions Analysis, Identification, and Mitigation
Circuit Cellar

Performance Bottlenecks in Embedded Linux Solutions Analysis, Identification, and Mitigation

Good performance is a requirement for every technology, and system designers rely on operating systems to ensure fast and smooth transitions in critical applications. Fortunately, Pedro writes, the embedded Linux OS offers ways for finding, analyzing and mitigating performance bottlenecks so embedded systems can deliver the speed and efficiency that end users expect.

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10+ mins  |
January 2025
Datasheet: Microamps Per Megahertz Ultra-Low Power MCUs Minimize Current Consumption
Circuit Cellar

Datasheet: Microamps Per Megahertz Ultra-Low Power MCUs Minimize Current Consumption

How do chip makers differentiate if many ultra-low power MCUs on the market feature the same processor core? The peripherals and different power states offer various ways to manage current consumption down to microamps per megahertz.

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2 mins  |
January 2025
Smart Home Lock Down Matter Provides Security Blanket
Circuit Cellar

Smart Home Lock Down Matter Provides Security Blanket

As more devices in the smart home connect to the Internet, they become increasingly vulnerable to outside attacks. Developers can now add the latest security measures to their Smart Home devices through Matter.

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10+ mins  |
January 2025
Basic Pulse Circuits
Circuit Cellar

Basic Pulse Circuits

In part one of a three-part series, Wolfgang wrote how basic pulse circuits help digital circuits, such as embedded boards with ARM processors, deal with pulse trains or bursts of pulses from the outside. In Part 2, he dives into enabling flip-flops, timing parameters, and synchronization, design tasks needed to capture, detect, and filter pulses.

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10+ mins  |
January 2025
New TI MCUs Enable Edge AI and Industry-Leading Real-Time Control to Advance Efficiency, Safety, and Sustainability
Circuit Cellar

New TI MCUs Enable Edge AI and Industry-Leading Real-Time Control to Advance Efficiency, Safety, and Sustainability

Texas Instruments (TI) introduced two new series of real-time microcontrollers that deliver advancements to help engineers achieve more intelligent and secure processing in automotive and industrial applications.

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1 min  |
January 2025
Using Amazon Alexa to Control Custom IoT Gadgets
Circuit Cellar

Using Amazon Alexa to Control Custom IoT Gadgets

In part two of his article, Brian describes integrating custom IoT gadgets with Amazon Echo using emulation to receive spoken alarms. In part one, he used emulation and Arduino Cloud services as a middleman.

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10+ mins  |
January 2025
No Blues with Bluetooth!
Circuit Cellar

No Blues with Bluetooth!

Part 7: Versions 5.0 to 6.0

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10+ mins  |
December 2024
Building An Unconventional Home Anemometer
Circuit Cellar

Building An Unconventional Home Anemometer

Using an Arduino Pro Mini Microcontroller

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10 mins  |
December 2024
Renesas New RA8 Entry-Line MCU Groups Brings High Performance of Arm Cortex-M85 Processor to Cost-Sensitive Applications with Market-Leading CoreMark Performance
Circuit Cellar

Renesas New RA8 Entry-Line MCU Groups Brings High Performance of Arm Cortex-M85 Processor to Cost-Sensitive Applications with Market-Leading CoreMark Performance

Renesas Electronics Corp., a premier supplier of advanced semiconductor solutions, introduced the RA8E1 and RA8E2 microcontroller (MCU) groups, extending the industry's most powerful series of MCUs.

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1 min  |
December 2024
XP Power Launches New Series of Low-Profile, Baseplate-Cooled DC-DC Brick Converters
Circuit Cellar

XP Power Launches New Series of Low-Profile, Baseplate-Cooled DC-DC Brick Converters

The RDF150 and RDF200 series are the latest additions to the RDF series of low-profile, baseplate-cooled, ultra-wide input DC-DC brick converters, which is already available in power outputs of 25W and 50W.

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1 min  |
December 2024
HMI Introduces Ultra-Low Voltage 12-bit GPIO Expander with Interrupt Output
Circuit Cellar

HMI Introduces Ultra-Low Voltage 12-bit GPIO Expander with Interrupt Output

HMI, a leading provider of advanced analog and power management technologies, announced the launch of its HL5310, an innovative ultra-low voltage 12-bit GPIO expander featuring interrupt output.

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1 min  |
December 2024
Amazing Eddy Currents
Circuit Cellar

Amazing Eddy Currents

Apply Them to Thin Metal Thickness Measurement

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10+ mins  |
December 2024
Basic Pulse Circuits
Circuit Cellar

Basic Pulse Circuits

Part 1: Essentials for Processing Outside Signals 9

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10+ mins  |
December 2024
Easing the Path for App Releases
Circuit Cellar

Easing the Path for App Releases

Managed Development of React Native with Expo

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10+ mins  |
December 2024
Same Sky Expands AMT Absolute Encoder Line to Support Larger Shaft Sizes
Circuit Cellar

Same Sky Expands AMT Absolute Encoder Line to Support Larger Shaft Sizes

Same Sky's Motion & Control Group announced the addition of a new series to its innovative AMT absolute encoder family designed to support larger motor shaft sizes from 9mm to 15.875mm (5/8 inch).

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1 min  |
December 2024
Start to Finish Driving LCDs
Circuit Cellar

Start to Finish Driving LCDs

Lumex Display with Microchip Driver for a TI MCU

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10+ mins  |
December 2024
Datasheet: Tiny Embedded Boards
Circuit Cellar

Datasheet: Tiny Embedded Boards

Deliver Power, Performance, and Versatility in Meager Square Millimeters

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2 mins  |
December 2024
Harvesting Ambient Energy
Circuit Cellar

Harvesting Ambient Energy

Hybrid Power Sources Cut IoT Battery Dependency

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10+ mins  |
December 2024
The Future of Embedded Chip Design Navigating the Chip Creation Space
Circuit Cellar

The Future of Embedded Chip Design Navigating the Chip Creation Space

Custom Silicon at Lower Cost, Reduced Development Time

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6 mins  |
December 2024
The Long and Winding Road
Circuit Cellar

The Long and Winding Road

From Maxim's RS-232 to WeMos ESP32: So Much to Do, So Little Time

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10+ mins  |
December 2024
The Elite College Students Who Can't Read Books - To read a book in college, it helps to have read a book in high school.
The Atlantic

The Elite College Students Who Can't Read Books - To read a book in college, it helps to have read a book in high school.

Nicholas Dames has taught Literature Humanities, Columbia University's required greatbooks course, since 1988. He loves the job, but it has changed. Over the past decade, students have become overwhelmed by the reading, College kids have never read everything they're assigned, of course, but this feels different. Dames's students now seem bewildered by the thought of finishing multiple books a semester. His colleagues have noticed the same problem.

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9 mins  |
November 2024
LoRaWAN Goes the Distance at Low Power
Circuit Cellar

LoRaWAN Goes the Distance at Low Power

IoT’s Versatile Protocol for Long-Range, Wide-Area Connectivity

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10+ mins  |
November 2024
No Blues with Bluetooth!
Circuit Cellar

No Blues with Bluetooth!

Part 6: Bluetooth Cybersecurity Basics

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10+ mins  |
November 2024
Industrial Computers Boost Machine Vision Systems
Circuit Cellar

Industrial Computers Boost Machine Vision Systems

GPU and CPU Performance Drive Rugged Industrial Platforms

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6 mins  |
November 2024
Datasheet: Power Up With DC-DC Converters
Circuit Cellar

Datasheet: Power Up With DC-DC Converters

Application Types Drive Parameters Beyond Efficiency and Density

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3 mins  |
November 2024
As a 'Matter of Fact
Circuit Cellar

As a 'Matter of Fact

Inside atest Home Control Consolidation Attempt via Google Home and Matter-over-Thread

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10+ mins  |
November 2024
Entertainment On Wheels
Circuit Cellar

Entertainment On Wheels

In-Dash Panels Control Head Units, Multiple Displays, Cameras and Sensors

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10+ mins  |
November 2024

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