[Sintron] New 40-Pin GPIO Extension Board Starter Kit with RGB LED Switch Push Button 830 Points Breadboard for Raspberry Pi 1 Models A+ and B+, Pi 2 Model B, Pi 3 Model B,Pi 4 Model B and Pi Zero Germany Store (14) Servo style connectors are

(14) Servo style connectors are used to connect to the endstops

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2-inch knockouts on the left

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[Sintron] New 40-Pin GPIO Extension Board Starter Kit with RGB LED Switch Push Button 830 Points Breadboard for Raspberry Pi 1 Models A+ and B+, Pi 2 Model B, Pi 3 Model B,Pi 4 Model B and Pi Zero Germany Store (14) Servo style connectors areOverview After you got your Raspberry Pi 2 Model B 1GB & B+, you might have enjoyed the open source function and code, but don't forget this, they are also able to interact with external hardware as embedded system. So get this kit, and start it! we also provide pdf files about how to control them. You will have much fun for doing this! This 40Pin GPIO Extension Board is already soldered and assembled, so buyer just need to plug it in, then there you