Is it possible to connect the Oled expansion directly to the Omega 2+?

I want to use the omega2 as a wearable device with an oled screen on it.

I'd like to ask if anyone knows how to fetch RSSI data from all the wifi hotspots that the Omega 2 can detect?

I'm planning to use it for a wifi triangulation or fingerprinting method.

Good day! I'd like to ask if it is possible to geolocate without GPS module? I understand geolocation is a used if GPS is unreliable in some circumstances like in buildings or any indoor facilities.
https://www.youtube.com/watch?v=QhdvIJ_qlFQ

School project purposes. I wanna use the Omega2 as a wearable tracker. Thus, wifi might be used to geolocate.

Is it possible to get RSSI Values of wifi hotspots?
the usual solution I found online is through "ubus" command like this:
ubus call onion wifi-scan "{'device':'ra0'}\

I have a project that specifically needs the RSSI signal.
To be specific, I'll be comparing the fetched signal to the signal my android app produces.

Hoping anyone can help me out. I'm using this for my Thesis.

@György-Farkas wow! Thankyou so much!
I just got mine. I had fun testing it. I'll try this schematic of yours. Probably I'll post an update if this works.
0_1537628167095_6CFB40DA-697B-45BF-9D42-29611FC35D24.jpeg

Is this possible? Because I'm planning to build a wearable device using the omega with an oled screen for a school project. It would be very nice if I could maintain a small form factor of the finished project.

So I was thinking of connecting the oled directly to the omega2+.

Is it possible to connect the Oled expansion directly to the Omega 2+?

I want to use the omega2 as a wearable device with an oled screen on it.