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Circuit Cellar - November 2025

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En este número

4: An ESP32 Dashboard - Monitoring How a Popular Microcontroller Uses Resources, By Pedro Bertoleti 10: Designing Analog Electronics - Part 1: Error and Uncertainty, By Andrew Levido 20: Keeping Time with Rolling Balls - An Arduino-Controlled Gravitram Clock, By Aubrey Kagan 26: Empowering Disabled Persons with Hand Motions for Environmental Controls, By Matthew Oppenheim 36: TECHNOLOGY FEATURE: CIA for SBCs (and More) Securing Embedded Systems from Evolving Threats, By Curtis Franklin 42: DATASHEET: Making the Right Voltage - DC-to-DC Converters Bring the Right Voltage to Circuits, By Curtis Franklin 46 PICKING UP MIXED SIGNALS: A GPS-Disciplined Frequency Counter Using the PSoC 5LP, By Brian Millier 54 EMBEDDED SYSTEM ESSENTIALS: Using a Desktop Laser Engraver to Probe into Chip Silicon, By Colin O'Flynn 63: TECH THE FUTURE: The Future of Embedded Systems and AI - AI in Embedded Systems - Cybersecurity Challenges and Opportunities in a Smarter World, By Pete Popov

An ESP32 Dashboard

Monitoring How a Popular Microcontroller Uses Resources

10+ mins

Designing Analog Electronics

Part 1: Error and Uncertainty

10+ mins

Designing Analog Electronics

Part 1: Error and Uncertainty

10+ mins

Keeping Time with Rolling Balls - An Arduino-Controlled Gravitram Clock

An Arduino Zero turns out to be the perfect controller when Kagan sets out to keep time with stacked columns of rolling balls in a novel desktop clock

10+ mins

CIA for SBCs (and More)

Securing Embedded Systems from Evolving Threats

10+ mins

Datasheet: Making the Right Voltage

DC-to-DC Converters Bring the Right Voltage to Circuits

2 mins

A GPS-Disciplined Frequency Counter using the PSoC 5LP

In this month's column, Brian tasks one of his mixed-signal favorite MCUs, the Infineon PSoC 5LP, to build a frequency/ period counter using a GPS satellite module to discipline the project's time base.

10+ mins

Using a Desktop Laser Engraver to Probe into Chip Silicon

Laser fault injection is a common method of attacking devices, but sometimes we want to first understand what a device looks like or what certain blocks on the surface of the device die are. This article shows how you can use a low-cost laser engraver to map out these blocks, even without more advanced fault injection equipment.

8 mins

Bourns Expands Semi-Shielded Power Inductor Portfolio with New Series Featuring Higher Maximum Inductance Values

Bourns, Inc., a leading manufacturer and supplier of electronic components for power, protection, and sensing solutions, announced the expansion of its semi-shielded power inductors.

1 mins

Vishay Intertechnology Power Metal Strip Resistor Delivers Power to 5 W in Compact 1206 Case Size

Vishay Intertechnology, Inc. introduced a new surfacemount Power Metal Strip current sense resistor that combines a high power rating up to 5W, TCR down to ± 75ppm/°C, and extremely low resistance values down to 0.3mΩ in the compact 1206 case size.

2 mins

STMicroelectronics' New Automotive Linear Voltage Regulator Preserves Battery Energy in Challenging Conditions

The TL99VR03 300mA low-dropout (LDO) regulator provides resilient and efficient power, with a wide input-voltage range and very low quiescent current consumption, only 3.5µA at no load. The IC has an enable pin for turning the regulator off, which reduces the idle current to 800nA, and integrates soft-start circuitry to limit current during power-up and fault recovery.

1 mins

Samtec Launches 800-Position AcceleRate HP High-Performance Array Connectors

Samtec, Inc., a global leader in high-performance interconnect solutions and a service leader in the industry, announces the expansion of its AcceleRate HP product line with the release of 800-position APM6 and APF6 high-performance array connectors available in a low-profile 5mm stack height.

1 mins

ROHM Develops New Smart Switches Optimized for Zonal Controllers

ROHM Semiconductor announced the release of six new high-side smart switches (IPDs: Intelligent Power Devices) featuring highly accurate current sensing and low ON resistances ranging from 9mΩ to 180mΩ.

1 mins

The Future of Embedded Systems and AI: AI in Embedded Systems

Cybersecurity Challenges and Opportunities in a Smarter World

4 mins

Lea todas las historias de Circuit Cellar

Circuit Cellar Description:

Editor: KCK-Media-Corp.

Categoría: Education

Idioma: English

Frecuencia: Monthly

Circuit Cellar magazine features engineering tutorials, detailed microcontroller-based projects, and embedded systems industry news for professional electrical engineers, EE/ECE academics, and highly skilled electronics enthusiasts. Since 1988, Circuit Cellar has featured projects and tutorials from the world's top engineers on subjects such as embedded development (e.g., prototyping and programming), signal processing (e.g., DSP chips and signal conditioning), programmable logic (e.g., FPGA projects), sensor systems (e.g., smart sensors and MEMS), 'Net-connected devices (e.g., IoT projects and protocol stacks), robotics (e.g., robotic systems and proximity sensing), and much more. Circuit Cellar is the ultimate resource for all of your electrical engineering-related needs.