Reply To: LTE Bee compatibility with older mayfly boards

Yes, the EnviroDIY sim7080 LTEbee module is compatible with the previous versions of the Mayfly board.  There are no hardware changes to do, but you will have to edit your code slightly.  The v1.x boards control power to the Bee socket (bee header pin 1) by using the the Mayfly’s D18 pin, allowing you to completely turn the 3.3v supply to the bee module on or off.  The Mayfly v0.5 and earlier boards don’t have this control, so the bee module is constantly powered.  This isn’t a problem because you can control the bee module’s sleep/awake functions using D23 (on all versions of the Mayfly).  So if you’re using one of our example sketches from our ModularSensors library for your Mayfly station, you’ll see a section in the code for setting up the modem options (usually around line 100).  For v1.0 or 1.1 boards, you should set the modemVccPin to 18.  On v0.5 and earlier boards, you should set the modemVccPin to -1.  This is also noted in the comment after that line in the sketch.  See the attached screenshot.