BigTreeTech
BTT Octopus Max EZ
Couldn't load pickup availability
BIGTREETECH Octopus MAX EZ V1.0 is a 32-bit 3D-printer control board for large Klipper or Marlin builds that need ten EZ driver channels, CAN, protected thermistor inputs, and flexible fan power. It is the upgraded Octopus-family board built around a 550 MHz STM32H723ZET6 ARM Cortex-M7 MCU, with pinless EZ driver sockets and onboard UART/SPI driver configuration.
Why this board over a standard Octopus
- 10 EZ driver sockets for high-axis-count CoreXY, toolchanger, multi-extruder, or large-format builds.
- Firmware-set UART/SPI for compatible BIGTREETECH EZ drivers — no driver-mode jumper maze.
- Board protection where mistakes happen: eFuse protection, protected thermistor circuits, replaceable fuse, and selectable 5V/12V/24V CNC fan voltage.
- Klipper-friendly expansion: CAN, SPI for accelerometer/input shaping, BLTouch/probe, RGB, filament sensor, PS-ON, TFT, and MINI12864 display headers.
Specifications
- Model: BIGTREETECH Octopus MAX EZ V1.0
- MCU: STM32H723ZET6, 32-bit ARM Cortex-M7 at 550 MHz
- Board size: 160 × 100 mm
- Input voltage: motherboard VIN 12V or 24V DC; heated bed input 12V or 24V DC
- Driver power: selectable 24V / HV up to 56V
- Stepper channels: 10 EZ driver sockets; UART/SPI driver modes
- Heaters: heated bed plus HE0, HE1, HE2, HE3 cartridge outputs
- Thermistors: 5× 100K NTC inputs; four channels selectable for PT1000 use
- Fans: FAN0–FAN3 2-wire CNC, FAN4–FAN6 4-wire CNC, plus 2× always-on 24V fan ports
- Firmware: Klipper or Marlin; firmware update by SD card or DFU
- PC interface: USB Type-C
Fitment and pairing
- Good fit for Voron, VZBot, large CoreXY, Cartesian, Delta, Kossel, Ultimaker-style, multi-extruder, and toolchanger projects that need more driver outputs than a smaller controller.
- Use EZ-format drivers such as the BTT EZ2209 Stepper Motor Driver for standard UART stepper channels or the BTT EZ5160 PRO Stepper Motor Driver when you need high-voltage SPI driver capability.
- Works well with a BTT MINI12864 V2.0 when you want a local screen.
- For CAN toolhead builds, pair the controller with a live toolhead board such as the EBB36 CAN Toolhead Board; the U2C CAN Interface Board is useful when you want a separate USB-to-CAN adapter.
Gotchas
- EZ drivers are not included. This board uses BIGTREETECH EZ-format pinless drivers; standard StepStick-style drivers are not the intended socket format.
- Check the fan-voltage jumpers before powering fans. The board supports 5V, 12V, and 24V fan rails, but the wrong jumper can kill the fan.
- The PT1000 jumper method is convenient, but BTT notes it is less accurate than a dedicated MAX31865-style RTD interface.
Shipping & Returns
Returns:
Thank you for purchasing from dfh.fm. I want you to be completely satisfied with your purchase. If for any reason you are not satisfied, you may return your purchase within 60 days of the original purchase date.
Defective items: Please inspect items upon receipt. If you receive a defective item, you may return it for a full refund or replacement within 90 days of the original purchase date. Please contact me to initiate a return for a defective item.
Non-defective items: If you are not satisfied with a non-defective item, you may return it for a refund within 30 days of the original purchase date. A 20% restocking fee will be deducted from the refund amount, to offset the time and inconvenience, as I am the sole employee processing the return and restocking the item. The fee also covers the costs associated with processing the return. Refunds for non-defective items will be issued through the original payment method.
Preordered items: Due to the nature of preorders, delivery dates are subject to change. Please keep in mind that, If you have preordered an item, it is not eligible for a refund until after it has arrived at the store. Once the item arrives at the store and is inspected, you may request a refund within 30 days of the original purchase date. Please note that refunds for preordered items may take up to 10 days to be issued.
To initiate a return, please open a ticket on the shop’s discord channel, with your order number and the reason for the return. We will provide you with further instructions on how to return your purchase.
Thank you for shopping with us. If you have any questions or concerns, please don't hesitate to contact me, via Discord.
Order alterations and cancellations:
Once an order has ben submitted, no alterations can be made. This includes adding or removing items or canceling orders. You are welcome to return an order, once you have taken receipt, following the returns procedure listed above.
Shipping:
US Shipping is via UPS or USPS. The way it is set up shows the least expensive options for standard, priority and express shipping. I can not take special requests for specific carriers at this time.
International shipping is mostly UPS, as I utilize Zonos/UPS integration to tally extremely accurate import and shipping costs.
I require a telephone and email with international orders and you must make yourself available to the carrier or your customs, should they require more information. If you are unreachable and the package is discarded or rerturned, I will not be responsible for rerturning your shipping cost.
If there is a problem with an international order, it is my choice to refund part or all of the order, or send a replacement.
Addresses are verified through Shopify, but the customer is still responsible for inputting their address in the correct format. Any returns or lost shipments, due to incorrectly addressed packages, are the responsibility of the customer.
