VEX Robotics IQ Curriculum – Mix ‘n’ Match Curriculum. Lesson 05 – Using the Touch LED Channel: VEX Robotics UK359 views • 28/06/2017Related VideosVEX Robotics IQ Curriculum - Mix 'n' Match Curriculum. Lesson 04 - Using the Bumper SwitchVEX Code IQ Color Sensor and Touch LED