Keyestudio USB to ESP-01S Wifi Module Serial Port Shield For Arduino &Compatible with ESP8266 wifi

This Keyestudio USB to ESP-01S WiFi module serial port shield simplifies the process of programming and debugging your ESP8266-based modules. It is an ideal tool for South African makers, students, and IoT developers looking for a straightforward way to configure firmware and test AT commands directly from a computer.

Onboard CH340G USB-to-serial chip

The shield features an integrated CH340G USB to Serial port chip, allowing you to connect your ESP-01S module directly to a computer. Once the driver is installed, you can easily interface with the module without needing extra external programmers.

Dual-mode toggle button

A dedicated physical button on the shield lets you switch easily between Flash Boot and Download modes. This makes it simple to test AT commands using serial debugging tools or flash new firmware directly to your ESP-01 module.

Compact and lightweight design

Measuring just 55mm by 18mm by 12mm and weighing only 5.6g, this compact shield is highly portable and fits easily into any maker's toolkit. Its small footprint ensures it won't clutter your workspace during development.

Safe electrical specifications

The shield operates on a DC 5V input with a minimum working current of 500mA, while maintaining a safe 3.3V communication voltage for the ESP-01S. It is also ROHS compliant, meeting environmental safety standards.

Streamlined firmware flashing

By setting the board to download mode, you can quickly flash custom firmware to your ESP-01 module using standard firmware software. This streamlines your development workflow for custom IoT projects.

Convenient AT command testing

Use your preferred serial debugging software to send AT commands and configure your WiFi module in real time. This allows for rapid prototyping and troubleshooting of wireless connections.