Arduino projects, circuit design, PCB development, and electronic prototyping tutorials
A processor that sees its I/O rails before its core rail will latch up. Hard to reproduce, catastrophic in production. A methodical approach to sequencing.
Remote sensing eliminates the voltage drop in the output cables. The op-amp summing network for remote sense and the stability implications of adding it to an existing design.
2021–2022 forced every hardware team I know to substitute components. The ones that shipped without quality escapes were methodical about it. Here is the tier system we used.
A chip antenna is $0.15 and works if you follow the clearance rules. A PCB trace antenna is free and performs comparably if your manufacturer holds 5-mil tolerance. The comparison from a real product.
Scheduled pet feeder with servo, RTC, and web interface.
Electromagnet chessboard with sensor grid and AI chess engine.
Fire and smoke detection system with MQ-2 sensor, flame sensor, and buzzer alarm.
A 0.36-inch seven-segment voltmeter/ammeter module for $4 sounds like a great addition. Isolating its switching noise from the output rail took three more revision passes.
Mobile robot with MQ gas sensors, GPS, and GSM for gas leak detection and alerts.
A coaster that senses cup temperature via TMP006 sensor and displays LED feedback.
Build a remote-controlled boat with Arduino, motor driver, and servo for steering.
An IoT device that monitors a plant's soil moisture and other environmental conditions, sending data to a database like InfluxDB for remote viewing.