About this item

The BIGTREETECH BTT ESP-01S WiFi Module is a compact and powerful wireless communication add-on for 3D printer control boards, based on the ESP8266 chip. Designed for use with BIGTREETECH boards like SKR, Octopus, and Manta, this module allows your printer to connect to a WiFi network, enabling wireless control, file transfers, and real-time monitoring. Once installed via the dedicated 8-pin header on compatible boards, the ESP-01S communicates over UART (serial), allowing seamless integration with platforms like OctoPrint, Mainsail, or Fluidd, especially when running Klipper firmware. It eliminates the need for USB cables or SD cards, allowing G-code files to be uploaded directly from a browser over WiFi. The module supports the 802.11 b/g/n standard at 2.4 GHz, ensuring reliable connectivity in most home or office networks. Its low power consumption and small size make it an ideal upgrade for users who want remote access without adding bulky components. Perfect for DIY enthusiasts and advanced users alike, the BTT ESP-01S adds convenience, flexibility, and modern network features to your 3D printer, transforming it into a smarter, more accessible machine.