September 1, 2024
Description
This is an module designed to hold a solar panel on top of the XRP robot. The platform has 2-degrees-of-freedom and is operated with two servos. With this, the solar panel can be directed towards the light source. All parts can be assembled without glue or fasteners. The platform is printed completely assembled and the rest can be pushed into place. I recommend printing using PETG, since the parts need to flex quite a bit in some areas.
The platform is adjustable so it is suitable for a whole range of solar panels. For compatibility with the other electronics, I recommend to look for 6V and in the range of 3 to 10W.
The panel clips work for a panel thickness up to 4mm. They're a bit stiff to put on, but that also makes them strong. M3 nuts/bolts can be used as well.
Update: I've updated the platform, the previous file still had a few bugs that needed to be solved. When printing, make sure support is only on built-plate, or the joints will be full with support materials.
Update: Finally have been able to upload a little video to see it in action.
Instructions for controlling the platform:
First mount the servo horns such that they point down at 0 degrees and up at 180 degrees.
When both servos are at approximately 90 degrees the platform is in the neutral (horizontal) position.
To control the Pitch Angle move the servos in the same direction: maximum positive pitch equals both servos at 180 degrees. For maximum negative Pitch move both servos to 0 degrees.
To control the Roll Angle move the servos in the opposite direction: Maximum positive Roll equals 1 servo at 180 and the other at 0 degrees.
Play with the servos to get a combination of Pitch and Roll Angle.
Next step is obviously to connect the solar panel to a battery and make it useful for the robot.
License:
Creative Commons — Attribution
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