BigTreeTech ESP-01S Wi-Fi Module ESP8266 for SKR Octopus
BigTreeTech ESP-01S Wi-Fi Module ESP8266 for SKR Octopus - Image 2
BigTreeTech ESP-01S Wi-Fi Module ESP8266 for SKR Octopus - Image 3
BigTreeTech ESP-01S Wi-Fi Module ESP8266 for SKR Octopus - Image 4
SKU: IOWC-1834
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BigTreeTech ESP-01S Wi-Fi Module ESP8266 for SKR Octopus

₹349.00 (Inclusive of all taxes)
Out of Stock

The BigTreeTech ESP-01S is a compact ESP8266-based Wi-Fi module pre-flashed with AT firmware for easy UART control, designed for seamless integration with SKR Octopus and other BigTreeTech 3D printer control boards. It operates at 3.3V and supports Arduino IDE and MicroPython for IoT prototyping.

Features

  • ESP8266 SoC with integrated MCU supports 802.11 b/g/n Wi-Fi up to 150 Mbps for reliable network connectivity.
  • Pre-flashed AT firmware enables simple control via UART serial commands, accelerating integration into existing systems.
  • Low operating current (~80mA average) and 3.3V supply make it suitable for embedded applications and 3D printer electronics.
  • Compact 25x15mm form factor with multiple interfaces (UART, HSPI, I2C, GPIO) offers flexible hardware integration.
  • Designed specifically for BigTreeTech SKR series control boards, ensuring plug-and-play compatibility for 3D printer networking.

Out of stock

Description

The BigTreeTech ESP-01S Wi-Fi Module integrates the popular ESP8266 chip into a compact, purpose-built form factor for 3D printer control boards like the SKR Octopus. This module comes pre-configured with AT command firmware, allowing developers and makers to establish Wi-Fi connectivity through simple UART serial communication, eliminating the need for initial firmware flashing. Its integrated Tensilica L106 microcontroller provides sufficient processing power for handling network protocols while supporting alternative development environments like Arduino IDE and MicroPython for custom IoT applications.

Engineered for reliability in embedded environments, the module operates on a 3.0V to 3.6V supply with an average current draw of 80mA, supporting stable operation within 3D printer electronics enclosures. It features a comprehensive set of digital interfaces including HSPI, I2C, I2S, and multiple GPIOs, enabling expansion beyond basic Wi-Fi connectivity. The built-in PCB antenna provides adequate range for typical workshop settings, while support for WPA/WPA2 security ensures secure network integration for remote monitoring and control applications.

Key Features

  • ESP8266-based design with integrated microcontroller and Wi-Fi stack for all-in-one connectivity.
  • Pre-loaded AT command firmware simplifies Wi-Fi configuration and network integration via serial UART.
  • Supports full 802.11 b/g/n Wi-Fi protocols with TCP/IP networking stack for IoT communication.
  • Ultra-compact 25mm x 15mm footprint designed for direct installation on 3D printer control boards.
  • Multiple interface support (UART, HSPI, I2C, I2S, GPIO, PWM) enables versatile peripheral expansion.
  • Low-power operation with comprehensive security protocols (WPA/WPA2) for reliable embedded use.
  • Direct compatibility with BigTreeTech SKR series motherboards for plug-and-play 3D printer networking.
  • Arduino IDE and MicroPython support allows for custom firmware development beyond AT commands.

Applications

  • Adding Wi-Fi connectivity to BigTreeTech SKR Octopus, SKR Pro, and TFT35 3D printer control systems for remote monitoring and file transfer.
  • Embedded IoT sensor nodes and telemetry units requiring compact, low-power Wi-Fi with serial command interface.
  • Prototyping and development boards where pre-flashed AT firmware accelerates network integration and testing.
  • Industrial equipment and DIY automation projects needing reliable 2.4GHz wireless communication with Arduino/MicroPython support.

Technical Specifications

Wireless SoCESP8266
Wireless Protocols802.11 b/g/n Wi-Fi
Frequency Range2.4GHz - 2.5GHz (2400-2483.5MHz)
Data RateUp to 150 Mbps
Supply Voltage3.0V - 3.6V
Operating Current~80mA (average)
InterfacesUART, HSPI, I2C, I2S, IR Remote Control, GPIO, PWM
AntennaIntegrated PCB Antenna
SecurityWPA, WPA2
Network ProtocolsIPv4, TCP/UDP, HTTP, FTP
Operating Temperature-40°C to +125°C
Dimensions25mm x 15mm (LxW)
Weight5g

Frequently Asked Questions

How do I connect and configure the BigTreeTech ESP-01S module with my SKR Octopus board?

Connect the module's VCC (3.3V), GND, TX, and RX pins to the corresponding UART and power pins on your SKR Octopus. Power on the system and open a serial terminal (e.g., PuTTY) at 115200 baud to the assigned UART port. Send AT commands like 'AT' to check connectivity, followed by 'AT+CWMODE' to set Wi-Fi mode and 'AT+CWJAP' to join your network. Ensure your power supply provides a stable 3.3V to avoid instability.

Can I program the ESP-01S with the Arduino IDE instead of using AT commands?

Yes, you can reprogram the module using the Arduino IDE. You will need an external USB-to-Serial adapter (e.g., FTDI) connected to the module's UART pins (TX, RX, GPIO0, RST, VCC, GND). Set GPIO0 low during power-up to enter flashing mode. In the Arduino IDE, select 'Generic ESP8266 Module' as the board type. Note that flashing custom firmware will overwrite the pre-installed AT commands, requiring you to manage Wi-Fi connectivity within your sketch.

What is the power requirement and current consumption of this Wi-Fi module?

The module requires a regulated 3.3V power supply (3.0V to 3.6V range) connected to its VCC pin. The average operating current is approximately 80mA, with peaks during RF transmission. It is crucial to use a stable, low-noise 3.3V regulator capable of supplying at least 300mA to ensure reliable Wi-Fi operation, especially when paired with other peripherals on your control board. Avoid using 5V logic directly, as it can damage the ESP8266 chip.

Package Includes

  • 1 x BigTreeTech ESP-01S Wi-Fi Module ESP8266

Additional Information

Weight 0.005 kg
Dimensions 2.5 × 1.5 cm

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