Circuit Cellar 428 March 2026 (PDF)

Issue #428
March 2026
Mesh Networks

4 Running Model Trains Without Human Input
A Raspberry Pi Pico Controls Two Trains
By Mike Christle

12 Analog Meets Digital
Part 4: Eliminating Mains Interference with an ADC By Andrew Levido

22 Connector Requirements for High-Voltage Healthcare Applications
Simplifying Safety and Security By Lou Copley

26 A System That Detects, Tracks, and Deters Deer
Using Computer Vision, an Arduino, and a Raspberry Pi 5 By Amaziah Kinavuidi and Mark Gladkevitch

34 TECHNOLOGY FEATURE
Mesh for Embedded Control
Mesh Networks Are Rewiring Embedded Systems By Curtis Franklin

40 DATASHEET
Linux-Based SBCs SBCs Running Linux Bring Enterprise Power to the Network's Edge By Curtis Franklin

44 Picking Up Mixed Signals
Another Matter-Enabled MCU: the ESP32-C6 By Brian Millier

54 Embedded System Essentials 
From Buffer Overflows to Control Flow Attacks By Colin O'Flynn

63 TECH THE FUTURE
The Future of Product Development Nature Inside the Tech: E-Bikes Explained By Wessel Snoey