Duex4 V0.2 - Original Duet Expansion Board


Ex VAT: £40.00

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Duex4 v0.2

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Bargain - Original DUEX4 V0.2 Expansion board for DUET 3D Printer Controller

The Duex4 is a 4 channel expansion board for the Duet. It adds 4 further stepper drivers, 4 more FETS for extruder heating, 4 temperature measurement channels and 4 endstops. In combination with the Duet this allows for a 3Axis printer with 5 or 6 extruders (5 Extruders if paired with a Duet 0.6, 6 extruders if paired with Duet 0.8.5). It uses the same stepper drivers, FETs and digital current setting controller as the Duet and is connected with a (supplied) 50 way ribbon cable. It is Open Hardware, both designed and manufactured in the UK.


This is the original Duex4 V0.2 which does NOT have an analogue GND. As described this blog post: http://blog.think3dprint3d.com/2015/04/duex4-v02a-minor-updates.html, this omission leads to noisier temperature readings on the expansion board than on the Duet (as documented with a fix, by David Crocker). Most users have not found this to be a problem.

The RepRapFirmware supports Duex4. We recommend DC42's Fork available here:

https://github.com/DC42/RepRapFirmware/tree/devNote that you should set the Duex4 thermistor series resistors to 1k in config.g.


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Think3DPrint3D is a family business based in Peterborough UK, supplying components and complete 3D printer kits to individuals and resellers around the world. Formed in 2011, we believe passionately in Open Source Hardware and the RepRap project. We aim to provide quality products at reasonable prices, backed by an exemplary level of customer service and technical support. We are actively developing new 3D printer and electronics designs.

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