Whatever you do, you’re working with a nominal five dollar board ... voltage of about 2 V converts the 5 V data line down to something that the Pi Zero’s 3.3 V won’t get fried with.
The original Pi Zero was at first a bit of hardware glued to the cover of the MagPi magazine, later to sell for just $5 USD. The Raspberry ... All I need is an eight dollar WiFi USB adapter.