Duet 2 Maestro

Duet 2 Maestro

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  • Duet 2 Maestro
  • Duet 2 Maestro
Duet 2 Maestro

Regular Price: $172.13

Special Price Excl. Tax: $97.92 Incl. Tax: $122.40

Availability: Available to order

In locale stock

The latest open source 3D printer controller bringing capabilities at a value-driven price
Description

Details

The Duet 2 generation of 3D printer controllers is highly respected. The Duet 2 Maestro joins this family of controllers. This board offers control over all the Trinamic driver settings and the lower motor current range allows for finer control (about 50mA instead of 80mA). Maestro improve the heater connectors so that they can handle more current and are physically better retained. With new TMC2224 drivers supporting 256 microstepping, significant improvement in printer noise and smoothness of motion can be achieved. The drivers also support Trinamic’s StealthChop2™, the no-noise, high-precision chopper algorithm for inaudible motion and inaudible standstill of the motor. StealthChop2™ allows faster motor acceleration and deceleration than StealthChop™ and extends StealthChop to low stand-still motor currents. Maestro can handle up to 28V input, an increase on the maximum of the other Duet 2 boards which are limited to 25V. Other changes include reducing the maximum number of motors to 7 in total, and a maximum drive current of 1.6A, which is still close to double typical usage on a desktop 3D printer. 

RepRapFirmware is unique in allowing users to change the settings with a simple G-code configuration file. This allows for settings to be easily updated on the fly and from multiple input devices (Web, Touchscreen, USB, G-code file). Because the Maestro runs RepRapFirmware it benefits from all the advances that Duet3D have developed, especially:

  • Support for mixing extruders.
  • Precise timing of step pulses, even during acceleration.
  • Accurate extruder pressure advance, including retraction before the end of a move when needed.
  • Segmentation-free delta motion.
  • Least-squares auto calibration of delta printers.
  • Support for drivers controlled through serial interface.
  • Heater power compensated for changes in supply voltage.

SIDE BY SIDE COMPARISON OF CURRENT PRODUCTION DUETS

Feature Duet 2 Maestro Duet 2 Ethernet Duet 2 WiFi
Price $99-129 (£72-94) $182 (£130) $168 (£120)
Processor ATSAM4S8C ATSAM4E8E ATSAM4E8E
Processor features ARM Cortex-M4, 1024KB Flash, 128KB RAM ARM Cortex-M4, 512KB Flash, 128KB SRAM ARM Cortex-M4, 512KB Flash, 128KB SRAM
Networking Ethernet Ethernet 2.4GHz WiFi
Input power voltage (VIN) 11V to 28V 11V to 25V 11V to 25V
Stepper drivers on-board 5x TMC2224,
series connection for (optional) dual Z steppers
5x TMC2660,
series connection for (optional) dual Z steppers
5x TMC2660,
series connection for (optional) dual Z steppers
Stepper driver features Up to 1.6A current (undergoing thermal verification), microstep interpolation from any setting to x256, stealthChop2 for extremely quiet stepper operation Up to 2.4A current, microstep interpolation from x16 to x256, stall detection Up to 2.4A current, microstep interpolation from x16 to x256, stall detection
Stepper driver expansion Up to 2 additional stepper drivers, either TMC2208/2224 or step/dir/enable drivers Up to 7 additional stepper drivers, of which up to 5 can be TMC2660 Up to 7 additional stepper drivers, of which up to 5 can be TMC2660
Heater outputs Bed heater (up to 18A, undergoing thermal verification),
2x extruder heater (up to 6A each)
Bed heater (up to 18A),
2x extruder heater (up to 6A each)
Bed heater (up to 18A),
2x extruder heater (up to 6A each)
Thermistor/PT1000 inputs 4 (optimized for PT1000 sensors, work well with thermistors too) 3 3
PT100 and thermocouple daughter board support 2 board (4 channels) 2 boards (4 channels) 2 boards (4 channels)
Heater/thermistor expansion Additions possible with configuration, see "Other expansion" below 5 more extruder heater outputs and thermistor inputs, 2 more PT100/thermocouple daughter boards (4 channels) 5 more extruder heater outputs and thermistor inputs, 2 more PT100/thermocouple daughter boards (4 channels)
Endstop or filament monitor inputs 5 on-board; STP pins are tolerant to accidental exposure up to 30V 5 on-board, 7 expansion 5 on-board, 7 expansion
Endstop status LEDs No Yes Yes
Z probe connector 5-pin with IN/GND/MOD/3V3/5V pins; IN pin is tolerant to accidental exposure up to 30V 4-pin with IN/GND/MOD/3V3 pins 4-pin with IN/GND/MOD/3V3 pins
Fans 3 controlled fans, 1 always-on fan; configurable across two banks for 5V or VIN operation 3 controlled fans, 2 always-on fans; select 5V or VIN operation 3 controlled fans, 2 always-on fans; select 5V or VIN operation
Servo support 1 servo output on-board with 5V drive (shares the output with the Z probe MOD pin and the diagnostic LED) Up to 5 via expansion connector (3.3V drive unless expansion board used) Up to 5 via expansion connector (3.3V drive unless expansion board used)
Power monitoring VIN voltage VIN voltage and input to on-board 5V regulator VIN voltage and input to on-board 5V regulator
LCD support PanelDue color touch screen (supported),
12864 mono graphics display (firmware support pending)
PanelDue color touch screen (supported) PanelDue color touch screen (supported)
Other expansion 2 pins usable as analog inputs, GPIO, or UART; 2 pins usable as GPIO or I2C, e.g. to control 16 GPIO pins on third-party SX1509B-based I/O expansion board 4 GPIO pins on Duex2/Duex5 expansion board; 6 additional fan outputs on Duex2/Duex5 expansion board; 16 GPIO pins on third-party SX1509B-based I/O expansion board 4 GPIO pins on Duex2/Duex5 expansion board; 6 additional fan outputs on Duex2/Duex5 expansion board; 16 GPIO pins on third-party SX1509B-based I/O expansion board
RepRapFirmware versions available 1.x series, 2.0 series 1.x series, 2.0 series 1.x series, 2.0 series

 

 

LET THE MAESTRO DIRECT YOUR 3D PRINTER

Duet 2 serves as a master directing the movement of your 3D printer, hence the Maestro. This controller is the only board with native modularity in its configuration and settings structure that adopt the mentality that you can change the settings with the G-code rather than having to make direct modifications to firmware. Maestro is pressure advanced; it smooths out the flows, which is beneficial to all printers for quality. It also offers the multi-tool head mixing and multi-point printer calibration capabilities. 

SUMMARY OF PRODUCT FEATURES 

Input Voltage: 12 to 28 V; 5 V can be generated on-board or supplied externally

Power Loss Recovery: Supported

Processor: 120 MHz ARM Cortex-M4 (ATSAM4S8C)

Storage: 512 MB microSD included, 8 GB is available as an add-on

Motor Drivers: Five (5) Trinamic TMC2224, with up to 1.6 A peak current per motor coil and 256 microstepping. By default, RMS current is configurable up to 1.2 A. Higher current levels are possible, but require special considerations such as additional heatsinking.

Endstop Support: Five (5) channels. Each channel has available 3.3 V supply. Supports normally open, normally closed, and filament monitoring add-ons for extruder axes.

Bed Leveling: Dedicated interface for addition of a mini IR height sensor or various other Z probes

Heated Bed Support: Estimated up to 18 A current, to be confirmed by thermal tests.

Temp Sensor Support: Four (4) channels capable of thermistor or direct PT1000 support. Add-ons available for PT100 or thermocouple support.

Fan Support: Three (3) pulse-width modulated (PWM), firmware controlled fans, one (1) always-on. Fans are voltage selectable across two banks (input voltage or 5 V).

Servo Support: One (1) hobby style

Additional Motor Support: Headers for two (2) additional axes with step/direction interface and configuration via single wire UART (TMC2224 or similar).

Ethernet Support: 100 Mbps Wired Ethernet

LCD/TouchScreen Support: Compatible with PanelDue, compatibility with 12864 LCD is expected in the future.

Web Interface: Included; Maestro is compatible with Duet Web Control

Compatible Firmware: RepRapFirmware, DC42 forks

WIRING DIAGRAM

 

DIMENSIONS

There are four 4mm clearance holes at the corners of the board. You can use M4 screws to attach the board to a panel or an enclosure, make sure to use nylon washers under the screw heads. The mounting centers are 115mm x 92mm, full dimensions are shown in the diagram:

The diagrams show the mounting hole points in the format X,Y so the bottom left hole is at X=4mm, Y=4mm, the top left is at X=4mm, Y=119mm and so on. The board has 1 additional holes at (63.4,64.3) for mounting the temperature daugherboard.

MOUNTING

The mounting holes are isolated and not plated through.

Please note:

  • If you mount the board on a metal surface, use standoffs to ensure that the back of the board cannot short against the plate. A minimum standoff length of 5mm is advised, however larger is preferred for better cooling.
  • Do not use metal washers under the mounting screws, or screws with large heads (e.g. button head). Nylon washers are recommended. With a metal washer there is a risk of creating a short.

COOLING

The PCB is designed to transfer heat from the stepper drivers and power mosfets to the underside of the board. Therefore your mounting method should encourage good airflow underneath the board.

If you mount the board vertically, make sure that cool air can enter at the bottom of the board, flow upwards behind the board, and escape at the top. Convection cooling will usually be sufficient, but if you are using high stepper motor currents then you may wish to add a fan below the board to encourage the upward flow of air. Make the spacing between the back of the board and the panel or enclosure large enough to allow a good flow of air.

If you mount the board horizontally then a cooling fan is recommended, especially if there are other heat-generating components in the vicinity such as power supplies, SSRs or stepper motors. Position the fan to blow air underneath the board (optionally along the top as well), especially along the row of stepper driver chips and between the power input and bed heater terminal blocks.

Important! The higher the motor currents you set, the more important it is to cool the board.

WHAT'S INCLUDED IN YOUR REWARD

1 x Duet 2 Maestro controller board

1 x Pre-installed 512MB microSD card

1 x USB cable

Connectors you may need (NOT INCLUDED):

Item Required For Qty / Duet
2-way KK-style housings Extr x 2, Therm x 4, fans x 4 10
3-way KK-style housings Estop x 5, ext 5V 6
4-way KK-style housings Motors x 6, PDue 7
5-way KK-style housings Z-probe 1
8-way KK-style housings Drive 6, 7 2
KK-style crimps, bag of 100 Total of 87 pins above 1
Insulated ring or fork terminals M3 Power in, heated bed 4
White single ferrules Extr x 2 4
M4 nylon washers Mounting Duet 4

EXPECTED ADD-ONS

The add-ons below are completely optional and may be purchased to each backer's liking. This is a tentative list of what we have planned, so it may change depending on part availability and your feedback!

  • Extruder expansion board

  • Wire harness

  • 8GB microSD card

  • Quad extruder head

  • Dual extruder head

  • 24V Power Supply

  • 24V Power Cables

  • PT 1000 Temp Sensor

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