Low-Power USB-C (5 V) Environmental Sensor Node with 18650 Li-Ion Power-Path, Robust Protection (Reverse Polarity, OVP, UVLO, OCP to 3 A), Dual-Radio ESP32-S3 MCU, I²C VOC/Temp/Humidity/Pressure/Lux Sensors, and 2-/4-Pin JST-XH Expansion Pads for Battery and Sensors #USB-C #LiIon #ESP32 #I2C #PowerProtection #EnvironmentalSensor

Smart Wellhead Controller V1.1: ESP32 + LoRa Industrial IoT Node with Solar Power, Deep-Sleep Leak Sensing, and OLED HMI. Now upgraded with a solar charging and battery management stage featuring a TP4056/CN3791 charger IC, power-path switching, Li-ion battery protection, and integrated 3.3 V rail supply. #PowerBlock #SolarCharging #BMS