EnviroDIY Mayfly Logger: v0.5b

New features of version 0.5b (released in May 2017):

• Added additional power options for the XBee radio socket, via jumper SJ13, to optionally power newer radios (i.e. 4G LTE-M & NBIoT) that require up to 2A of power at ~3.7V and do not have an external JST power socket. The SJ13 jumper on the back of the Mayfly Logger v0.5b allows the user to chose to power the XBee radio module from either the:
  • Mayfly’s regulated 3.3v Vcc line (default), with a 500 mA maximum; or
  • LiPo battery unregulated direct power (option), if you cut the small trace that’s connecting the “3v3” pad to the center pad of SJ13 (labeled “BEE_Vcc”), and put a solder bridge joining “BEE_Vcc” to the pad labeled “LIPO”