Part NumberDescription
ESP-WROOM-02Wi-Fi Module, ESP8266EX SoC, 32-bit, 802.11b/g/n, WPA/WPA2, 2.7-3.6V, SMD
BQ24072RGTUSB-Friendly Li-Ion Battery Charger and Power-Path Management, VQFN-16
CP2102N-Axx-xQFN28USB to UART master bridge, QFN-28

CO2 SENSOR schematic

Open in new tab