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RJ12 Jack Connectors - EV3/NXT LEGO Compatible - Pack of 10 : ID 4434 : $3.95 : Adafruit Industries, Unique & fun DIY electronics and kits
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Building Instructions for a cable that connects LEGO Power Functions (PF) with Mindstorms NXT/EV3 - Christoph Bartneck, Ph.D.
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10V 700mA 0.7A Universal AC DC Adapter Charger For Lego Mindstorms EV3 NXT 45517 Robot Power Supply - AliExpress
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RJ12 Jack Connectors - EV3/NXT LEGO Compatible - Pack of 10 : ID 4434 : $3.95 : Adafruit Industries, Unique & fun DIY electronics and kits
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