Designed for vending machines, this board combines ESP32 with 100Mb Ethernet with PoE, 4G cellular modem, and backup 18650 battery with charging circuit.
Key Features
- 1 x ESP32-S3 microcontroller (Esspressif ESP32-S3-WROOM-1-N8R2, dual-core XTensa LX7, 240 MHz. 512 KB SRAM, 8MB Flash and 2MB PSRAM)
- 1 x 100Mbps Ethernet PHY (Wiznet W5500)
- 1 x 10W PoE module
- 1 x RTC (Analog Devices DS1339 with CR2032 coin cell battery)
- 1 x EEPROM DIP chip socket
- 1 x RS232 (Texas Instruments MAX3232E)
- 3 x LED
- 1 x Buzzer
- Power supply and charger with a single-cell 18650 Lithium battery
PCB Design
- Designed in EasyEDA Pro
- Prototyped by JLCPCB
