Orange pi 0 Xiaomi smart with home assistant and google assistant

Hi there Im one smart home things been a while with xioami home kit and xiaomi bulbs but is not enough for me and I like to have mote thinks smart like tv turning on with voice but im lazy so i don´t start with home assistant. I just read a lot because im confused between home assistant and open hab. Recently I bought a orange pi zero to run google assistant and now I decided to user home assistant and let a shitty app of xiaomi. I will need help first of all I just need a ir receiver that can control tv and other devices. I all ready added my xiaomi light´s to home assistant I just need to control them with google assistant now.