ESP32 & IoT₹49 Vault
Build an Indoor VOC & Air Hazard Tracker with ESP32-C3, SGP30 & OLED
Comprehensive step-by-step engineering guide for building a continuous indoor TVOC and eCO2 air hazard monitor using ESP32-C3, SGP30, and NVS baseline storage.
ESP32-C3 SuperMini / DevKitM-1 (32-bit RISC-V 160MHz)Gas Sensing: Sensirion SGP30 Multi-Pixel Metal-Oxide Gas Sensor (Total Volatile Organic Compounds [TVOC] & equivalent $CO_2$ [$eCO_2$] via I2C 0x58)Interface & Audio: SSD1306 0.96" OLED Display (I2C 0x3C), Active Piezo Buzzer Alarm (GPIO 3)Memory & Resilience: Flash NVS (Non-Volatile Storage) Hourly Baseline Calibration Retention, I2C Bus Lockup RecoveryTarget Search Intent: "SGP30 baseline calibration storage in NVS ESP32", "ESP32-C3 I2C clock stretching timeout", "OLED SSD1306 freezing after 48 hours fix", "Indoor TVOC hazard monitor"1 Code • 0 CAD
Download verified Arduino C++ firmware, pinout table, and BOM for Build an Indoor VOC & Air Hazard Tracker with ESP32-C3, SGP30 & OLED.
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