The Mindstorms Custom Controller, developed by Stefan Loen, is a powerful Bluetooth controller that allows you to control your EV3 and NXT devices. With this controller, you can directly control motors, send values to mailboxes, and even check the values of the color sensor. The best part? You can build your own controller! This feature allows you to fully customize your controller with sliders, joysticks, buttons, and colorsensors.

To get started, simply pair your NXT or EV3 with your phone via Bluetooth. Then, select your brick and press "Connect". From there, you can create your own controller by selecting the size of the grid, dragging sliders into the field, and repositioning and resizing buttons. The Mindstorms Custom Controller also features an (auto)save function, multiple intelligent bricks, multiple pages, and an easy-to-understand layout.