# Board extension module Bigtreetech Writer v1.0 — ESP-01S Wi‑Fi adapter for SKR v1.4 / SKR v1.4 Turbo

**URL:** https://aio.lv/en/product--bigtreetech-btt-18759--11731384
**Data updated:** 2026-03-08 13:24 (EET)
**Category:** Printer & Copier Parts
**Manufacturer:** Bigtreetech
**Manufacturer code:** BTT-18759
**EAN:** 5904422358853
**Warranty:** 2 Years
**Availability:** Available for order
**Price:** 8.49 €
**Prices and availability valid until:** 2026-07-15 23:59
**Price without VAT (21%):** 7.02 EUR
**Can be purchased by legal entities:** Yes (invoice)
**Buy:** https://aio.lv/en/product--bigtreetech-btt-18759--11731384

## Delivery options

| Delivery method | Delivery time | Cost |
|---|---|---|
| Office pickup (2b. Kengaraga str., Riga, Latvia, LV-1063) | 06.07.2026 | free |
| Pickup points | 09.07.2026 | 1.99 EUR |
| Courier delivery to door | 09.07.2026 | 4.99 EUR |

## Summary description

Bigtreetech Writer v1.0 is a board extension module designed to host an ESP‑01S Wi‑Fi module and expand connectivity for SKR v1.4 and SKR v1.4 Turbo mainboards. It provides a compact interface for adding wireless network capability to compatible 3D printer controllers, simplifying firmware flashing and remote control tasks without altering the mainboard layout.

## Long description

The Bigtreetech Writer v1.0 is a compact board extension module that allows installation of an ESP-01S Wi‑Fi module to add wireless connectivity to SKR v1.4 and SKR v1.4 Turbo 3D printer mainboards. Designed to interface directly with the host board, it provides the required signals and physical connection for the ESP‑01S so users can enable network access for firmware updates, remote control, and monitoring without modifying the mainboard layout.
Advantages
This extension module offers a small footprint and straightforward mechanical and electrical compatibility with SKR v1.4 and SKR v1.4 Turbo systems. It simplifies the process of integrating an ESP‑01S Wi‑Fi module by providing a dedicated socket and the necessary signal routing, which reduces the risk of wiring errors. The board supports common use cases such as over‑the‑air firmware flashing and basic network communications while keeping the original mainboard form factor intact.
Suitable for
Adding Wi‑Fi connectivity to SKR v1.4 and SKR v1.4 Turbo based 3D printers
Enabling remote printer monitoring and control via an ESP‑01S module
Facilitating wireless firmware updates or OTA flashing workflows
Key specifications
Form factor: compact extension module designed for direct connection to compatible SKR mainboards
Compatible module: ESP‑01S Wi‑Fi module socket
Interface: signal lines and power routing required for ESP‑01S operation with SKR v1.4 / SKR v1.4 Turbo
Mounting: board-to-board connection that preserves mainboard layout and mounting points
How to use
Install the ESP‑01S module into the header on the Writer v1.0 board, then attach the Writer module to the SKR v1.4 or SKR v1.4 Turbo mainboard using the designated connector and alignment pins. Ensure correct orientation of the ESP‑01S when seating it in the socket. After physical installation, configure the mainboard firmware and serial/network settings as required to recognize and communicate with the ESP‑01S. Follow the mainboard and Wi‑Fi module documentation for appropriate jumpers or firmware options to enable network features.
Usage recommendations
Use a stable 3.3 V supply and verify signal levels before connecting the ESP‑01S. When performing firmware updates or OTA flashing, confirm network credentials and backup existing configurations. If you encounter communication issues, check wiring, module seating, and firmware serial port settings on the SKR mainboard.

## FAQ

### How much does the Bigtreetech Writer v1.0 — ESP‑01S Wi‑Fi adapter for SKR cost, and is it available for purchase?

The price is 8.49 € (valid at the time of publication and already includes all taxes). The item is available for order — 1 pcs. are in stock, and you can place your purchase right now with delivery across Latvia and Europe or choose pickup at the Riga collection point. We offer favorable purchase terms, including the option to split the payment into convenient monthly installments. Availability and price are updated in real time, so we recommend placing your order in advance.

### If I order this product today, when will I receive my order?

If you place your order today, delivery will be as fast and convenient as possible. You will be able to pick up your order on 06.07.2026 at the Riga pickup point or choose delivery across Latvia and Europe. We carefully inspect every purchase and pack it securely for safe transportation.

### What payment options are available?

AiO.lv offers several payment methods: Bank transfer, Bank cards on-line, Apple Pay, Google Pay. All transactions are 100% secure and encrypted.

### Can this product be purchased for a company (with VAT)?

Yes. AiO.lv works with legal entities in Latvia and across Europe. The product price already includes VAT. For certain product categories, as well as for companies from other EU countries with a valid VAT number, a 0% VAT rate may apply. We issue the invoice immediately after the order is placed, support electronic BIS invoices, and automatically generate all necessary accounting documents. You can complete the purchase for a company online — simply select the company profile and choose bank transfer as the payment method during checkout.

### What is the warranty period?

All Bigtreetech products come with an official 2 Years warranty. It covers all manufacturing defects and malfunctions that may occur during use. The warranty is valid at all authorized Bigtreetech service centers and through AiO.lv

### Can the product be returned after purchase?

Yes, you can return the product within 14 days of purchase if you bought it as a consumer (not a legal entity). Returns are possible without giving any reason — the main condition is that the product retains its original appearance and full set of accessories. We will make the process as simple and convenient as possible: just contact our customer support team, and we will help you arrange the return.

### Where should I contact for warranty service?

For warranty-related questions you can contact the AiO.lv (SIA VSPRO) customer support team. More information about warranty service: https://aio.lv/en/warranty

## Image

https://aio.lv/img/cache/product/11731384/67111208_large.webp