Hacker News new | past | comments | ask | show | jobs | submit login

There are endless modules to attach. There is both an IR one and a 400MHz radio tx/Rx one. IR is like 50 cents, radio is like $1.50 I think on AliExpress. The radio is probably better than IR since it works pretty damn far and without LoS.

Guidelines | FAQ | Support | API | Security | Lists | Bookmarklet | Legal | Apply to YC | Contact