Congratulations on your new Duet 3 Mini 5+! This page will guide you through getting connected, updating firmware, setting up initial configuration.

First, read the warnings! See Warnings and Fire safety for precautions you must take.

1 x Duet 3 Mini 5+ (WiFi or Ethernet)

1 x Connector kit, including:

• Würth Elektronic WR-WTB series connectors (Molex-KK compatible)
• Ferrules for power input and bed heater
• Connectors and crimps for hotend heaters.

100 x crimps for connectors

1 x SD Card

1 x Single Board Computer (SBC) ribbon cable

1 x External antenna (WiFi version only)

The Duet 3 mini 5+ is designed to either be directly connected to a network, or to connect to a Single Board Computer (SBC) like a Raspberry Pi.

All standard printer functions, different kinematics, the network UI (DuetWebControl) etc work in stand alone mode.

SBC mode allows part of the functionality to be handled by the SBC. For example an HDMI or Pi touch screen can be used as the UI, The Pi can act as the network server and plugins for Duet Software Framework on the Pi allow for adding custom features for more advanced control and monitoring.

The following section expects that you are setting up your Duet 3 Mini 5+ without an SBC (Single Board Computer, eg Raspberry Pi) connected. If you are setting up your Duet with an SBC, jump to the later section Getting connected - SBC mode

If you have the WiFi version of the Duet 3 Mini 5+, don't forget to connect the external antenna. Ideally, mount the antenna and Duet on your machine first; the antenna connector is quite a tight fit, and is not intended for frequent connecting/disconnecting. Carefully align the connector as square and straight as you can before firmly pushing on. You can also unscrew the aerial from the other end of the cable, which you'll need to do to mount the antenna, and leave the other end connected to the Duet. The antenna mounts through a 1/4" or 6.3mm hole.

You will need to initially setup the Duet 3 Mini 5+ using a USB cable (USB A to Micro B). Make sure the USB cable is capable of carrying power AND data; some USB cables are power-only. Then follow the guide here: Getting connected to your Duet

After following this guide, you should be able to connect to your Duet 3 Mini 5+ over your network, and connect to the Duet Web Console (DWC).

Update to the latest release firmware. Follow the guide here: Updating Duet 3 Mini 5+ firmware

If you have your Duet set up in stand-alone mode, skip this section and move on to Commissioning.

• Duet 3 Mini 5+
• Raspberry Pi. Initially this has to be Model 3B or 4 but we may support some other models in the future.
• Ribbon cable to connect the Raspberry Pi to the Duet. Use the 26-pin to 40-pin cable supplied. Recommended length is 100 to 150mm. Longer cables will degrade the SPI signal between the Raspberry Pi and the Duet.
• Power supply (min. 12V. max 32V, recommended 24V) and cables
• Stepper motors, heaters, thermistors, endstop switches etc. as required
• SD card with Duet Pi image in the Raspberry Pi
• No SD card in the Duet 3

• Duet 3 expansion board(s) and/or tool boards
• RJ11 twisted pair cables to connect the expansion board(s). The cable wiring must be straight-through. Only a single twisted pair is required, connected to pins 3 and 4 (the middle 2 pins) of the connector.
• 2-core red/black cable to daisy chain power to the expansion board(s)

The Duet 3 Mini cannot power the Pi. You must power the Pi separately. The Raspberry Pi is sensitive to the input voltage, and many smartphone chargers or other USB power supplies cannot supply sufficient voltage. Therefore, we strongly recommend that you use the official Raspberry Pi PSU, or another PSU specifically designed to power a Raspberry Pi. If the red LED on the Pi is not continuously illuminated, the power supply is insufficient.

In other respects, SBC connection to the Duet and configuration is the same for the Duet 3 Mini as for the Duet 3 MB6HC. See SBC Setup for Duet 3.

When using an attached Raspberry Pi or other SBC, the WiFi or Ethernet interface on the Duet 3 Mini is disabled.

If you connect one or more expansion boards via CAN, you must install the two CAN termination jumpers on the last board in the chain, but not on any additional boards in the middle of the chain.

The Duet Web Control user interface it the best way to control your Duet. A comprehensive manual is here: Duet Web Control v2 and v3 (DWC) Manual

So far, the Duet is not configured for your machine. Use the RepRapFirmware Configuration Tool to produce a set of files to upload to the Duet, then upload them to the Duet using Duet Web Control.

Acquaint yourself with the Duet 3 Mini 5+ wiring diagram, to help connect components.

There's lots of useful information collected together for the Duet 3 Mini 5+ here: Duet 3 Mini 5+

See the sections for choosing, connecting and testing each component in the Commissioning Guide