For $80 you aren’t going to get something bright enough for daylight hours, but it should be fine if you want to watch stuff when its dark/darker.
I think you need at least 2500 lumens to watch stuff in the home during daytime, I would imagine you would need a hell of a lot more outside.
I have this impressive wee guy.
I bought it to watch movies in a dark room with a 100″ screen and it is perfect for that. It could definitely be used for a larger screen, but it’ll get more washed out the bigger you go.
I have used it on a friends wall which gave it around an 8 foot across screen and it was pretty awesome.
For sound, I just use the head phone jack and connect up some 2.1 computer speakers, which gives plenty of sound.
At the moment, I am actually using it as my TV, because my actual TV broke!
I have it connected up to my Virgin box with HDMI, and while I can watch it during the day, it just isn’t powerful enough for a really clear picture with the 40″ size I have it projected at, but at night its fine.
You can buy 100-120″ screens from ebay for around £60, less if you are happy with just wall mounted ones.
I am thinking of getting a similar $80 one like yours to possibly use as my TV, so I will watch this thread to see how you get one with yours 🙂