$41 OWI Robotic Arm Edge on Amazon https://www.amazon.com/dp/B0017OFRCY/ref=cm_sw_r_cp_api_5bRv... - Took us about 4.5 to 5 hours to assemble. Pretty complicated.. You put everything together including all gears, motors and screws. Can be programmed with $31 OWI USB attachment and CD-ROM.
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