Open Source Servo Driver for Rockets

Luke Weston from our partner Lunar Numbat has kicked off an interesting open source hardware project called OpenServoDrive. This is a high-power servo driver for a pair of DC brush motors and will be used in the throttling mechanism for the valves on our lunar lander's main engine.

 This open source hardware projects consists of just a single Printed Circuit Board (PCB) which is relatively compact, lightweight, inexpensive, and fully open source without any dependence on a closed commercial product. The PCB plugs directly into both DC motors, the 60V power supply, the two rotary encoders on the backs of the motors, the CAN, and a 12-24V power supply (supplied on the CAN loom) and provides the motor control. The new open hardware has equivalent functionality to the Rutex R2020 board when mated to a custom interface board previously designed and tested by Luke. The PCB layout is not finished yet but you can see the board's schematic in the project's github repository.

 The first use planned for the hardware is on the AUSROC2.5 sounding rocket, and it could also be used for any other applications where precise servo control of two large high power brushed motors is desirable, for example large CNC plotting, engraving etc. machines. Partnering with open source developers on projects such as this one is a key strategy of White Label Space to help reduce the costs of our GLXP mission, and to help make space more accessible for the everyday experimentalist and entrepreneur.

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Luke Weston LCA2011 Talk Online

As we posted earlier, Luke Weston from our open source partner Lunar Numbat recently gave a talk at lac2011 (the Linux of Australasia).

You can now watch his complete talk online at this link.

During his talk Luke gave an update on some of Lunar Numbat's ongoing developments, and in particular, his latest progress on the throttle control avionics and radar altimeter.

Lunar Numbat is currently developing hardware for AUSROC 2.5, a sounding rocket of the Australian Space Research Institute (ASRI). After demonstrating the designs on the rocket, space-qualified versions will be developed for use on the White Label Space lunar lander.

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Lunar Numbat Talk at Linux Conference

Jon Oxer from Lunar Numbat gave a presentation at the 2010 Linux conference of Australasia (linux.conf.au) in Wellington, New Zealand.

In his talk Jon explained how open source developers down-under can get involved in the Google Lunar X PRIZE (GLXP) through Lunar Numbat. He gave some details of the various projects currently underway at Lunar Numbat and how they fit into the White Label Space GLXP mission. There was also an interesting question and answer session at the end of the talk.

The video of his talk is embedded below, split in two parts to fit in the youtube duration limit.