LOG 004 / CONTROLLER / ACTIVE
ESP32-S2 Feather + STEMMA QT
The Adafruit ESP32-S2 Feather combines Wi-Fi, native USB, battery support, and a Feather-format expansion system. Its STEMMA QT connector exposes I²C on a keyed four-wire plug for fast sensor and converter experiments.
S2
Espressif ESP32-S2 controllerNative USB and Wi-FiSTEMMA QT: SCL, SDA, 3.3 V, GNDFeather and LiPo-friendly form factor
RESEARCH SIGNAL FLOW
STEMMA QT → I²C bus → acquisition loop → wireless field logMYCOTUNE USE CASES
◌ Read ADS1115 samples over I²C
◌ Stream test data to a browser or local tool
◌ Store calibration and experiment firmware in version control
◌ Drive the MycoTune display, controls, and sound mapping
NEXT BENCH STEPS
→ Wire an ADS1115 through STEMMA QT
→ Implement a fixed-rate acquisition loop
→ Log timestamps and calibration metadata
→ Measure power and noise in battery operation