DIY midi controller for helix/stomp - Helix - Line 6 Community
Line 6 HX Stomp Multi-Effects Processor STAGE KIT – Kraft Music
Line 6 - The HX Stomp XL processor's Command Center functionality, MIDI capabilities, and external expression pedal jack make it an ideal master controller for your entire setup. Learn more: https://line6.com/hx-stomp-xl/