Hi, I want to make my own home assistant and I have a Raspberry Pi 4B with 1GB of RAM from a school competition. Will this be enough to power 2 to 3 rooms for LED strips and lights?
Recommended minimum is 2GB. Some people can still run on a 1GB pi3, so you my get away with it for a bit, but others run into trouble. But it does not hurt to try. If you make sure you have backups, the encryption key for your backups, and offload the backups to a different device then you can always move to better hardware. The backup restore experience is pretty seamless.
And what device can I make the backup on?
For this, yes. But, as @Edwin_D wrote, you may outgrow it. I have a Pi 4b 2GB and it’s been working fine for years now (SSD, not SD).
If you have a NAS or other Samba storage (for instance, routers can sometimes be used for shared storage using an usb drive), or a cloud service like Google Drive or Onedrive. There are integrations that allow you to do that.
I have a 1TB OneDrive. So it would probably work on that. But otherwise about the device. What Raspberry Pi would you recommend?
and also a question. I would like to do it via esp home, how complicated is it for someone who started with esp and arduino a week ago and so far I have only had minor issues like motors, some simple sensors and 1 display?
If you want to work with ESPHome then you will have to install the ESPHome builder on your laptop, the addon will definitely not fit on 1GB. That is not much of a problem though, you can still connect the esp’s to HA. How hard it will be to get started depends on what you want to do with the ESP. But ESPHome is much easier than arduino, since most things are done using some relatively simple yaml configuration.
Well, it will still be the same controlling the lights, mainly. turning them on, dimming them. Turning on the computer when I get home (if that’s possible, I just read somewhere that I would like that too) and dimming the lights at a certain time, etc.
now I’m still thinking about how it will work? Will it run only on the esp itself or will it be via Raspberry Pi.
Also, is there an application for a mobile phone with the esp or Raspberry Pi?
I know I’m asking quite a few stupid questions, sorry for that.
Yes… yes… I also use an Rpi3 with 1gb of ram. It’s not the best but to control some lights and sensors it’s fine without problems. You try… at the limit you can restore your backup on another Rpi or something else