Olimex ESP8266-EVB Revision A1 Hardware Design Document
Hardware schematic for the Olimex ESP8266-EVB Rev A1 featuring an ESP8266 module, relay control, and power management components for IoT development.
Overview
This document provides the hardware schematic for the Olimex ESP8266-EVB (Revision A1) evaluation board. The design is centered on the Espressif ESP8266 Wi-Fi module and includes a 5V DC power circuit utilizing the Silergy SY8009AAAC buck converter to provide 3.3V. Key integrated components include a Rayex RAS-05-15 relay driven by a BC817 transistor on GPIO5, a UEXT connector for peripheral expansion, and a user button connected to GPIO0. The schematic details power protection via an SMBJ6.0A TVS diode and provides full pinout mapping for GPIO, ADC, and SDIO interfaces.
Use Cases
- Internet of Things (IoT) prototyping
- Remote relay control via Wi-Fi
- Home automation hardware development
- ESP8266 module evaluation
- Designing peripheral expansions using UEXT
Topics
Referenced Parts
SY8009AAAC
Silergy
U1 SY8009AAAC(SOT23-5)
DG306-5.0-3P
Degson
CON3-DG306-5.0_3P(TB3-5MM)
DTSM24R
Diptronics
DTSM24R(12x12x10)
RAS-05-15
Rayex Electronics
RAS-05-15
ESP8266
Espressif Systems
ESP8266_DEV