EDIT MAY 2015: Are you using the new software? Their new software, MyHarmony, available at https://setup.myharmony.com/ makes Roku Setup much easier. You don’t have to follow these steps if you update.
It isn’t as straightforward as one would like to set up a Roku 3 and a Logitech Harmony One remote. Some things that could be more obvious:
- Where is the Roku device on the “Devices” list?
It’s hidden under Devices -> DVD -> DVD -> Manufacturer: Roku -> Roku 3
It will come up as a DVD player, so you definitely want to rename the device by clicking “Settings” -> “Rename Device” and calling it a Roku3.
- Does the Harmony One have the right IR/RF control mechanisms to control a Roku?
Yes, it does. Mine is working perfectly after just configuring it with Logitech Harmony Remote Software. Logitech gives you some options to point the Roku remote at the backside of the Harmony remote, and pushing some Roku remote keys to learn. But the harmony, unsurprisingly, doesn’t learn when you fire things into its backside. You can skip that step.
- Why does the “Activity”->Watch Roku send commands to my TV instead of to the Roku?
Major annoying factor, but easy to fix. When I hit the “Activity” -> “Watch Roku” (I customized that name, it used to be “Watch DVD (2)”), all commands would be sent to the TV.
You can fix this by going to “Activities” -> “Watch Roku” -> “Customize Buttons”. Some buttons like Volume Control and Mute should go to your TV, but everything else can point to your Roku. See:
You can even add some custom buttons to show on the home screen with the “Additional Buttons” tab: