PCB-Mini-Environmental-Sensor
MbFredys
Compact ESP32-C3 environmental-sensor PCB design using BME280 and SGP40 for temperature, humidity, pressure, and VOC-based air-quality sensing.
Components (18)
| Reference | Value | Description |
|---|---|---|
| U1 | ESP32-C3-WROOM-02 | 802.11 b/g/n WiFi and Bluetooth 5 module, ESP32C3 SoC, RISCV microprocessor, On-board antenna |
| U2 | MCP73831 | Single cell, Li-Ion/Li-Po charge management controller, 4.50V, Tri-State Status Output, in SOT23-5 package |
| U3 | BME280 | 3-in-1 sensor, humidity, pressure, temperature, I2C and SPI interface, 1.71-3.6V, LGA-8 |
| U4 | SGP40-D-R4 | |
| U5 | TPS62203 | 300mA High-Efficiency Step-Down DC-DC Converter, adjustable output voltage, 2.5-6V input voltage, SOT-23-5 |
| C1 | 10uF | Unpolarized capacitor |
| C2,C10,C12 | 1uF | Unpolarized capacitor |
| C3,C4,C6,C8 | 0.1uF | Unpolarized capacitor |
| C5,C7,C9,C11 | 4.7uF |