Note NO ANTENNA is provided as the board is sold only as a sub-assembly and not designed to be used as a radio transmitter. Mounting a 2.4 GHz radio antenna (SMA, NOT reverse-polarity SMA) like Digi-Key P/N 1475-1014-ND could potentially require you to meet FCC/CE guidelines for RF emissions and is UNSUPPORTED USAGE.
== Historical Note Errata == === -02 Version === Balun pinout is incorrect and will not work. === -01 Version ===
The following is the original (-01) schematic. The -01 PCBs were never publicly released and used during development only. The following changes were made in -02: