# 3D Printer Mainboard Bigtreetech SKR 3 EZ, Bigtreetech, motherboard for 3D printers (MPN BTT-21679)

**URL:** https://aio.lv/en/product--bigtreetech-btt-21679--11731350
**Data updated:** 2026-03-08 13:24 (EET)
**Category:** Printer & Copier Parts
**Manufacturer:** Bigtreetech
**Manufacturer code:** BTT-21679
**Warranty:** 2 Years
**Availability:** Available for order
**Price:** 101.99 €
**Prices and availability valid until:** 2026-07-14 23:59
**Price without VAT (21%):** 84.29 EUR
**Can be purchased by legal entities:** Yes (invoice)
**Buy:** https://aio.lv/en/product--bigtreetech-btt-21679--11731350

## 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 SKR 3 EZ is a 3D printer mainboard designed for controlling FDM/FFF machines. It serves as the motherboard coordinating stepper motors, heaters, thermistors, and user interfaces. The board supports common motion control features, expansion for drivers and sensors, and is suitable for DIY upgrades, custom firmware flashing and replacement of original controller boards in hobby and prosumer printers.

## Long description

Bigtreetech SKR 3 EZ is a mainboard created to control FDM/FFF 3D printers, providing coordinated management of stepper motors, heaters, thermistors and user interfaces. The board is intended for use as a replacement or upgrade controller for hobby and prosumer machines and supports standard motion control functions, driver expansion and integration of commonly used sensors and displays. SKR 3 EZ is suitable for users who need a modern, modular motherboard platform for custom firmware flashing and incremental hardware improvements.
Advantages
The SKR 3 EZ offers a compact layout with accessible ports for stepper drivers, temperature sensors and peripherals, enabling straightforward wiring and component replacement. It supports common motion-control features and is compatible with widely used firmware platforms, which simplifies customization and tuning of print behavior. The board’s design emphasizes modularity and expandability so users can add or swap stepper drivers, displays and auxiliary sensors without replacing the entire control system.
Suitable for
 Replacing factory controller boards in hobby and prosumer 3D printers
 DIY upgrades to add improved stepper drivers or additional axes
 Custom firmware development and testing for motion and temperature control
 Integration with external displays, filament sensors and bed-leveling probes
Key specifications
 Mainboard type: single-board controller for FDM/FFF 3D printers
 Connectivity: multiple stepper driver sockets and peripheral headers for displays, thermistors and endstops
 Motion control: support for multi-axis coordination and common stepper driver modules
 Sensor interfaces: thermistor and endstop inputs compatible with standard printer components
 Power handling: designed for typical desktop 3D printer power supplies and heater circuits
 Firmware: compatible with mainstream open-source 3D printer firmware platforms
How to use
Install the SKR 3 EZ into the printer by disconnecting the original controller, mounting the board in the existing enclosure or designated location and reconnecting power, stepper motors, heaters, thermistors, endstops and any displays according to the board’s pinout documentation. After hardware connections, load and configure compatible firmware that matches your printer’s kinematics, stepper driver types and thermistor parameters. Verify basic functions such as axis movement, temperature readings and heater control before initiating a full print.
Usage recommendations
Use properly rated wiring and secure connectors when installing the mainboard. Before powering the system, double-check polarity and power connections for the heaters and power supply. Calibrate motion and temperature settings in firmware after installation and perform initial tests at low temperatures and speeds to confirm correct operation.

## FAQ

### How much does the Bigtreetech SKR 3 EZ 3D printer mainboard cost, and is it available for purchase?

The price is 101.99 € (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, Installment. All transactions are 100% secure and encrypted.

### Can Bigtreetech SKR 3 EZ 3D printer mainboard be purchased with a lease?

Yes, the purchase is available both on credit and with an interest-free installment plan. Learn more about installments and credit options: https://aio.lv/en/payment#b3

### 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/11731350/67111180_large.webp