Understand the systems you own.

Build an ESP32 breadboard transceiver that captures raw timing from common 38 kHz consumer IR remotes, reports the decoded signal over Serial, and replays the latest learned command through a transistor-driven 940 nm IR emitter.

Build an ESP32 + PN532 SPI tool that reads UID/type/NDEF data from user-owned NFC Forum Type 2 tags and safely rewrites a test NDEF URL on a rewriteable NTAG213.

Build a solderless ESP32 + AHT20 room sensor that sends temperature and humidity into Home Assistant through ESPHome's encrypted native API.

Build a 4.2-inch ESP32 e-paper desk display that pulls three U.S. National Weather Service forecast periods, performs one full refresh, then sleeps for 30 minutes while the image remains visible without a backlight.

Build a six-button wired USB macro pad with an ESP32-S3, three desktop shortcuts, and three media-control keys.