USB to ESP8266 ESP-01 WIFI Module Adapter Board

🔌 USB to ESP8266 ESP-01 WiFi Module Programmer & Adapter

This compact adapter plugs straight into a USB port and gives you a clean way to power, program and talk to ESP-01 / ESP-01S WiFi modules. The on-board USB-to-serial bridge handles the level conversion, while a slide switch flips the module between normal run mode and the bootloader state used for flashing firmware.

✨ Key Features

• USB-A plug with an on-board USB-to-serial bridge — no separate FTDI cable needed
• 8-pin 2.54 mm socket for the ESP-01 / ESP-01S module with the classic 2×4 pinout
• Mode switch for reset / flash (GPIO0 low) without re-wiring
• Breakout pads for TXD, RXD, GPIO0, GPIO2, CH_PD, RST, VCC and GND
• 3.3 V regulated supply matched to the ESP8266, plus power and activity LEDs
• Works with ESP8266 flashing tools, Arduino IDE, AT-command firmware and serial monitors

🔧 Specifications

• Interface: USB 2.0 full speed to UART
• Logic / supply: 3.3 V for the ESP module
• Socket: 2×4 female header, 2.54 mm pitch
• Switch: RUN / PROG (flash) positions
• Indicators: power and data activity LEDs
• Reset and flash control on-board, so no manual jumper wires

• Compact board with labelled pin silkscreen

💡 Perfect for

• Flashing and testing ESP-01 / ESP-01S modules
• Prototyping WiFi sensors, relays and IoT endpoints
• Updating AT firmware and running serial debug sessions
• First ESP8266 projects where a full dev board is overkill