This is work in progress and documentation will follow. In the meantime you should start by reading these blog posts:
For example:
SLASH = /
OAUTH2_CALLBACK_URL = wunderkammer:$(SLASH)/oauth2
ENABLE_NFC_SCANNING = YES
ENABLE_BLUETOOTH_SCANNING = YES
ENABLE_BLUETOOTH_BROADCASTING = YES
ENABLE_SFOMUSEUM = YES
ENABLE_COOPERHEWITT = YES
ENABLE_SMITHSONIAN = YES
ENABLE_METMUSEUM = YES
COOPERHEWITT_AUTH_URL = https:$(SLASH)/collection.cooperhewitt.org/api/oauth2/authenticate/
COOPERHEWITT_TOKEN_URL = https:$(SLASH)/collection.cooperhewitt.org/api/oauth2/access_token/
COOPERHEWITT_CALLBACK_URL = $(OAUTH2_CALLBACK_URL)
COOPERHEWITT_CLIENT_ID = {YOUR COOPERHEWITT API KEY}
COOPERHEWITT_CLIENT_SECRET =
COOPERHEWITT_SCOPE = write
COOPERHEWITT_KEYCHAIN_LABEL = wunderkammer://collection.cooperhewitt.org/access_token
TBW.
In the meantime, there is an example for producing a metmuseum.db SQLite database in the go-wunderkammer documentation.
Databases to enable support for the Smithsonian Institution need to be manually created using Smithsonian Open Access dataset as well as the the go-smithsonian-openaccess and go-smithsonian-openaccess-database packages. For example:
$> cd /usr/local/go-smithsonian-openaccess-database/
$> sqlite3 nmaahc.db < schema/sqlite/oembed.sqlite
$> /usr/local/go-smithsonian-openaccess/bin/emit -bucket-uri file:///usr/local/OpenAccess \
-oembed metadata/objects/NMAAHC | \
bin/oembed-populate -database-dsn sql://sqlite3/usr/local/go-smithsonian-openaccess-database/nmaahc.db
These databases will need to added to the wunderkammer application manually.
On iOS this involves copying them to the application's Document directory using the MacOS Finder (or iTunes application for pre-Catalina operating systems).
On MacOS these files will need to be copied in to /Users/{USERNAME}/Library/Containers/info.aaronland.wunderkammer/Data/Documents/smithsonian.
Note: All of the above will be automated in future releases.