We Have Them Both ... The 20 M and 30M Raspberry Pi WSPR TX ssembled and tested module.
Look here here for more information on 20M version.
Look here here for more information on the 30M version.
Watch the DCC playlist for videos of the 2017 DCC -- YouTube Playlist.
To make it easy to find all the ARRL/TAPR DCC video that HamRadioNow has produced over 100 programs so far! They have created *this YouTube Playlist*.
All the programs are free to watch, and HamRadioNow is viewer supported through voluntary contributions on their web site.