ESP32-C3 Low-Power Sensor Node
Ultra-low-power ESP32-C3 based sensor node with solar charging option and multiple sensor interfaces.
ESP32-C3Low PowerSensor NodeWi-FiBLE
Schematic Preview
ESP32-C3 Low-Power Sensor Node
Design Highlights
Deep-sleep current < 10µA
Solar + battery power path management
Multiple sensor buses: I2C, SPI, UART, ADC
OTA update-ready firmware structure
Open MQTT/HTTP APIs with reference code
Technical Specifications
Supply Voltage3.0V - 5.5V
Active Current< 120mA
WirelessWi-Fi 2.4GHz + BLE 5.0
InterfacesI2C x2, UART x2, SPI x1
Operating Temp-20°C ~ 70°C
Size45mm x 35mm
Downloadable Assets
Schematic (PDF)
640KB · PDF
PCB Files (Altium)Pro
2.1MB · Altium
Enclosure 3D ModelPro
4.2MB · STEP
BOM (Excel)Pro
38KB · XLSX
Gerber FilesPro
1.2MB · ZIP
FreeRTOS ExamplesPro
1.6MB · ZIP
Assembly GuidePro
420KB · PDF
Quick Info
CategoryIoT Sensor
Published2024-02-10
Last Updated2024-03-15
Functional Blocks
Energy Management
Battery management + solar charging front-end
BQ24074Main MCU
ESP32-C3 module with Wi-Fi + BLE 5.0
ESP32-C3-WROOM-02Environmental Sensors
Supports humidity, pressure, air quality sensors
BME688Security Module
Hardware secure element for credential storage
ATECC608A