Using MonoBrick Communication Library On Windows

This guide will help you setup USB and Bluetooth communication between the LEGO Mindstorms NXT brick and the Windows operation system for use with theMonoBrick communication library

USB Communication

To communicate with the EV3 the MonoBrick communication library uses HID API so if you are using the library for development you need to place the hipapi.dll the comes with the MonoBrick communication library download in the same folder as the exe-file that you want to run. Getting USB communication to work under Windows with the NXT requires the following two steps if you have not installed the NXT software.

  1. Download the fantom driver from the LEGO Website 
  2. Install the driver

That’s it. Place the LibUsbDotNet.dll that comes with the MonoBrick communication library download in the same folder as the exe file that you want to run.

Bluetooth Communication

To communicate with the LEGO Mindstorms Brick over Bluetooth a partnership between Windows and the brick has to be established. This requires the following five steps

  1. Search for a new bluetooth device
  2. Connect to EV3/NXT brick
  3. Enter 1234 as the pairing code on the EV3/NXT
  4. Enter 1234 as the pairing code on the PC
  5. Wait for pairing to be established

Once these steps are done you should be able to communicate with the brick using Bluetooth. Below is a step by step image guide for the NXT…

 

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