BIGTREETECH BTT Writer V1.0 Module To ESP-01S WIFI Module Expansion 3D Printer Parts For SKR V1.4/SKR V1.4 Turbo Control Board

Add reliable wireless functionality to your 3D printer with the BigTreeTech BTT Writer V1.0 ESP-01S WiFi Module Expansion Board. This compact adapter is specifically designed to work with the popular ESP-01S WiFi module, making it simple to enable WiFi control, remote monitoring, and wireless firmware updates on BigTreeTech control boards.

The BTT Writer V1.0 serves as a convenient bridge for flashing firmware to the ESP-01S and performing serial port debugging. Once programmed, it transforms your printer into a WiFi-enabled device, allowing connection via ESP3D, OctoPrint, or other wireless interfaces without messy cables.

Key Features:

• Supports firmware flashing and serial port debugging for ESP-01S
• Enables WiFi connectivity for wireless 3D printer control and monitoring
• Compact size: 32 × 24.6 mm — easy to integrate into tight builds
• Powered via 5V DC USB input for simple and stable operation
• Direct compatibility with SKR series boards

Compatible With:

• SKR V1.4 and SKR V1.4 Turbo control boards
• Other BigTreeTech mainboards with matching expansion ports
• Most Marlin-based 3D printers using ESP-01S WiFi modules (Ender 3 upgrades, custom builds, etc.)