Olimex MOD-WIFI-ESP8266 Revision A Schematic
Schematic for the Olimex MOD-WIFI-ESP8266 board featuring the Espressif ESP8266 Wi-Fi SoC and 16M-bit Winbond Serial Flash.
Overview
This technical schematic describes the hardware design of the Olimex MOD-WIFI-ESP8266 Revision A module. The circuit is centered on the Espressif ESP8266 Wi-Fi SoC and includes a Winbond W25Q16BVSSIG 16M-bit Serial Flash and an Epson TSX-3225 26MHz crystal oscillator. The design features a 10-pin UEXT connector for peripheral interfacing, status LEDs for power and general-purpose use, and specific resistor configurations to manage boot modes for SDIO, UART, and Flash. It operates on a 3.3V supply and incorporates an integrated Wi-Fi antenna circuit.
Use Cases
- IoT device prototyping
- Wi-Fi connectivity integration
- Embedded system development
- ESP8266 hardware reference
- UEXT interface implementation
Topics
Referenced Parts
TSX-3225
Epson
TSX-3225/26MHz/10PPM/7pF/3.2x2.5mm SMD ... Q1
ESP8266
Espressif Systems
ESP8266 ... U1
| W25Q16BVSSIG | Winbond | W25Q16BVSSIG 100nF ... U2 |
| TSX-3225 | Epson | TSX-3225/26MHz/10PPM/7pF/3.2x2.5mm SMD ... Q1 |
| ESP8266 | Espressif Systems | ESP8266 ... U1 |