I shared my solar tracking robot (solarbot) on tonight's Show and Tell, and I need help from the forums. I have a couple closed-source components that work well for the robot, but their licensing is closed and they are not viable for integrating into a full-OSHW design because of this. I'm hoping forums members can share links or designs to similar or compatible components, allowing me to publish a full-OSHW hardware design. Adafruit parts are always welcome too :)
First is my power supply. Since the motor controller shield runs off 12VDC @2A, and the source of power is usually a battery or solar panel, input voltage may fluctuate between 12-24VDC. I am using this one currently:http://www.mini-box.com/DCDC-USB-200
I am not using any
of the advanced features, so I am hoping someone can refer me to an OSHW alternative.
The second item is the motor controller shield itself, which is an Arduino-compatible board, but is not OSHW.http://www.pololu.com/catalog/product/2502
I am using this to control two 12VDC motors which draw about 2A max, but never at the same time. The circuit/app never ramps the motors up to full speed either, but I am leveraging the Pololu library to control & ramp up/down motor speed.
There are many motor control & power supply circuits out there- but I am not so great at finding ones that are equivalents to what I am using now. My hope is that I can build new circuits to replace these to not only lower the cost for someone else to build one of these, but create a project that is easy to license and generally unencumbered for OSHW. Thanks in advance,