RS485-to-WiFi-Gateway
aayu0-0
An STM32-based RS485 to Wi-Fi gateway supporting Modbus communication for industrial IoT applications.
Components (34)
| Reference | Value | Description |
|---|---|---|
| Q1 | AO3401A | -4.0A Id, -30V Vds, P-Channel MOSFET, SOT-23 |
| U1,U3 | SP3485EN | Industrial 3.3V Low Power Half-Duplex RS-485 Transceiver 10Mbps, SOIC-8 |
| U2 | ESP32-S3-WROOM-1 | RF Module, ESP32-S3 SoC, Wi-Fi 802.11b/g/n, Bluetooth, BLE, 32-bit, 3.3V, onboard antenna, SMD |
| U4 | AMS1117-3.3 | 1A Low Dropout regulator, positive, 3.3V fixed output, SOT-223 |
| U6 | TPS54360DDA | 3.5A, Step Down DC-DC Converter with Eco-mode, 4.5-60V Input Voltage, PowerSO-8 |
| C1,C4,C10,C13 | 100nF | Unpolarized capacitor |
| C5,C7,C15 | 10uF | Unpolarized capacitor |
| C8 | 22uF | Unpolarized capacitor |
| C14,C17,C18 | 10nF | Unpolarized capacitor |
| C16 | 0.1uF | Unpolarized capacitor |
| D1 | 3V3 | Light emitting diode |
| D2,D10 | SM712_SOT23 |