Phoenix is a robust, modular and through-hole RepRap electronics designed to be easy for beginners to construct.
In 2011 a few of us started the Thames Valley RepRap group [TVRRUG] to connect RepRap folk in the area and to embark on build groups designed to bring new folks into the RepRap 3D printing revolution. As part of this we started refining our Mendel Prusa based design and were looking to improve on the existing electronics. We wanted to solve a few of the current design issues as well as move away from the more expensive Pololu-based drive modules (Early build discussions). Here are some of the main features we decided as a group:
- Completely through hole component design - to make construction accessible to a wider range of folk
- Modular, so that single or multiple extruder designs could be catered for
- Self maintainable - if you can build it you can replace its modules and or components
- Robust - we had experienced thermal and power issues with the existing electronics, we figured we could improve on that
The design is modular and consists of a main controller board (OMC) and up to 3 Stepper modules (DSMs), each of which is capable of handling 2 stepper motors. This allows for designs from the basic single extruder up to more complex builds using three extruders.
- Atmel ATmega644 based controller design
- Up to 3 extruders (requires 3 DSM modules)
- High capacity Heated bed support (up to 20 Amps DC)
- On-board SDCard support
- Power sequencing (to protect the Toshiba drivers)
Files for the electronics are distributed under the CERN Open hardware license, and are, as such, completely open.
To checkout the very latest version of OMC git clone git://solderpad.com/folknology/open-motion-controller.git
To checkout the very latest version of DSM git clone git://solderpad.com/folknology/dual-stepper-motor-module.git
Current version is 1.2. All parts for a set (1xOMC, 2xDSM) can be sourced for around £100. Cheapest cost was not one of the highest priorities when designing the boards, and multiple boards and through-hole design is not the most cost effective way of designing the layout; monolithic surface mount is, but this compromises other aims such as user-maintainability.
BOM on GoogleDocs and Visual BOM/Kit parts
We currently support Marlin firmware. See Phoenix Marlin firmware support
https://plus.google.com/u/0/116341287830615647443/posts/HkSpwf9fMQt Lots of mentions on the TVRRUG googlegroup: https://groups.google.com/forum/?fromgroups#!forum/tvreprapug