smart robots, robots
thingiverse
the battery case is here https://www.thingiverse.com/thing:456900. i have not wired or coded this yet. https://www.thingiverse.com/thing:2662828 i remixed this sensor head and used hot glue to secure it . the two switches 1 is for the 2662828 battery and the other is for the 9 volt.
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