Open-BLDC Project Site
Open-BLDC stands for Open Source Brush Less DC Motor Controller.
The goal of the project is to create a completely Open-Source BrushLess Direct Current moto controller also known as Electronic Speed Controller (ESC). This means in our case that the software is released under GPL, version 3 or later and the hardware is released under Creative Commons Attribution-Share Alike 3.0 License.
Still in planning and testing phase.
- First tests with Mikrokopter BL-CTRLs done.
- First approaches to circuits and board designs based on Atmega microcontrollers were done.
- Version 0.3 of Open-BLDC is successfully and reliably controlling a brushless motor (associated blog post)
- Clogic board that replaces the logic in Castle motor controllers is up and running
- Betatesting of Strip low cost motor controller for small multicopters
For more information visit Twisted World of Esden blog.
Or join us on IRC #open-bldc on freenode
Some interesting links
- Mounts on off the shelf Castle Creations power stages which allows:
- From 2C up to 12C LiPo cell support
- Up to 200A constant power output depending on the power stage used
- Detachable/Interchangeable power-stage
- Hardware support for Fieldvector control (software pending)
- Hardware and software support for hardware based (comparator) BEMF control
- Regenerative braking (battery push back active braking)
- High speed (500kB/s) UART (TTL level Serial) based PC control and data aquisition interface
- Active freewheeling
- Adjustable timings
- Different interfaces:
- Fieldvector control
- Speed control
- Torque control
- Hall sensor based control
- Markus Bechtold for reviewing the PCB designs and many useful tips!
- Benjamin Glass for finding problems in the circuitry!
- All the developers from the UAVP-NG project for good ideas and encouragement!
- Richard Querin for the wonderful logo!
- Sep 4th, 2012: New Open-BLDC hardawe the Strip
- Apr 18th, 2011: Released CLogic hardware files.
- Jan 7th, 2011: Projectmovie Open-BLDC interview released.
- Dec 27th-30th, 2010: We were at the 27C3.
- Nov 27th, 2010: Implemented active freewheeling.
- Nov 15th, 2010: Implemented regenerative braking.
- Sep 16th, 2010: Hardware based closed loop control
- Aug 05th, 2010: New Open-BLDC v0.3 hardware
- Jun 29th, 2010: Created GitHub Open-BLDC organization.
- Aug 09th, 2009: first v0.1 board fully assembled
- Aug 08th, 2009: first v0.1 board is alive
- Aug 05th, 2009: v0.1 boards arrived!
- Jun 13th, 2009: Created a prototype using all SMD parts and phase current sensing.
- Mai 06th, 2009: Maiden run of commutation detection on the bread board prototype.
- Apr 27th, 2009: Maiden run of a motor using a bread board prototype.
- Mar 24th, 2009: IR2110 based power stage circuit
- Mar 20th, 2009: Breadboard adapters
- Mar 15th, 2009 Selecting parts for Open-BLDC power stage prototype
- Feb 26th, 2009 How to build arm gnu gcc toolchain for Mac OS X
- Feb 16th, 2009 Open-BLDC MK
- Dec 12th, 2008 First circuit tests for Open-BLDC on GitHub