Send a NMEA0183 sentence - austral-electronics/Austral_Support GitHub Wiki
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var sentence="IIXDR,P,"+msg.payload.barometer+",B,Barometer"; var chk=0; for (var i=0;i<sentence.lenght;i++) chk=chk^sentence.charCodeAt(i); msg.payload = '$'+sentence+'*'+Number(chk).toString(16); return msg;