amitchorasiya/Broadlink-RM-SmartThings-Alexa
This setup lets you control RF and Ir devices using SmartThings with or without a hub, and by extension, Amazon Alexa. Requires a low-cost device called Broadlink RM, a dedicated Android device on your LAN, and an app from the play store. See readme for instructions.
GitHub repository with 5 stars and 7 forks.