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Circuit Cellar Magazine - August 2024

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In this issue

4: RFID Attendance Tracker: Employee Clocking System Arduino Project, By Adrian Florian 14: Hit Me Up On TCP : Part 2 — Using TCP/IP for Transferring Data, MQTT is Lightweight and Simple-to-Use, By Pedro Bertoleti 20: Review of the Siglent SDS812X HD: 12-bit Digital Storage Oscilloscope, By Brian Millier 28: No Blues with Bluetooth! Part 4: Bidirectional Communication Between Peripherals and Central Devices, By Robert Lacoste 34: TECHNOLOGY FEATURE Tech Overview: Specialized Drones, By Michael Lynes 40: DATASHEET SBCs On the Edge of AI: To Reduce Latency, Single-Board Computers Take Inferencing Closer to the Source, By Tom Murphy 44: FROM THE BENCH Ping along with LAN Ethernet: RU Wired?,By Jeff Bachiochi 50: THE MAGIC SMOKE FACTORY Get More I/O Now! Going Beyond Your MCU’s Pin Count, By Joseph Corleto 54: START TO FINISH Getting Directions: Proceed to Your Destination Without Having to Ask Someone, By Stuart Ball 63: TECH THE FUTURE The Future of Deterministic Execution Mitigate Timing and Interference Issues on Multicore Processors, By Steve DiCamillo

RFID Attendance Tracker - Employee Clocking System Arduino Project

Attendance trackers carry prohibitively high costs for small companies. Andrei shows us how to build a cost-effective, customizable employee clocking system with RFID technology. An Arduino board with Integration Platform as a Service allows attendance tracking with RFID cards to blend seamlessly with popular payroll systems.

10+ mins

Hit Me Up On TCP - Part 2 Using TCP/IP for transferring data, MQTT is lightweight and simple-to-use

This is the second in a two-part series where Pedro highlights network communication using ESP32 SOC and the ESP-IDF framework. Part two shows how to establish a multiple-end communication through MQTT, with an ESP32 SOC on one end to another end that can be anything capable of communicating through MQTT. Transport fundamentals are covered through a practical example showing how an ESP32-S2 SoC communicates using MQTT.

10+ mins

Review of the Siglent SDS812X HD - 12-bit Digital Storage Oscilloscope

After 10 years of experience with his Siglent SDS1202X Digital Storage Scope, Brian was keen to review Siglent's new 12-Bit High Resolution scope, the SDS812X HD.

10+ mins

No Blues with Bluetooth!

Part 4: Bidirectional communication between peripherals and central devices

10+ mins

Tech Overview: Specialized Drones

Reconnaissance, Surveillance, Making Movies, Heavy Lifting, Package Delivery, Planetary Exploration There's A Mission-Specific UAV For Every Task -

10+ mins

Datasheet: SBCs On the Edge of AI - To reduce latency, single-board computers take inferencing closer to the source

A diversity of missions, size, computing resources and power consumption give designers a range of options for choosing the right board to fit the application.

2 mins

Get More I/O Now! Going Beyond Your MCU's Pin Count

Small microcontroller design projects often require additional I/O. In this article, Joseph presents several methods of expanding digital and analog I/O for these applications.

10+ mins

Getting Directions CHC Proceed to Your Destination Without Having to Ask Someone 40 277

Recalibrate your bearings on electronic compasses as Stuart navigates a journey with an MCU-guided compass module leading the way. He tells us how to avoid magnetoresistive effect, and the difference between magnetic north and true north.

9 mins

Mitigate Timing and Interference Issues on Multicore Processors

Missing multicore timing deadlines in a driver safety or aviation system is potentially catastropic. Adhering to guidance documents, and employing the appropriate testing and analysis methods ensures the efficient and deterministic execution of critical workloads.

5 mins

Read all Stories from Circuit Cellar

Circuit Cellar Magazine Description:

Publisher: KCK-Media-Corp.

Category: Education

Language: English

Frequency: 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.