ESP32-S2/C3/H2: AC Dimmer Doesn't Work on Single-Core ESP32 Feb 26, 2026 0 0 TL;DR: rbdimmerESP32 is designed for dual-core ESP32 (original and S3). ESP32-S2, C3, C6, and H2 are single-core. The library tries to isolate the dimmer task on a dedicated core — which is impossible... ESP32 ac-dimmer dimmerlink troubleshooting Read more