Arduino Pro Mini LoRa Sensor Node

Arduino Pro Mini Ttn Lorawan Sensor Node

Arduino Pro Mini ttn node Lorawan dengan modul DHT22 dan RFM95 ditenagai oleh baterai yang dilindungi 18650.
Arduino dikonversi menjadi kekuatan rendah dengan meninggalkan daya LED dan konverter tegangan.

Sirkuit

Kasus

Diagram

Kurva tegangan baterai selama 12 bulan dengan mengukur dan mengirim data semua 5 menit

TTN Payload Decoder (V2)

 function Decoder ( bytes , port ) {
  var decoded = { } ;
  
  decoded . vcc = ( bytes [ 0 ] + 200 ) / 100 ;
  
  if ( bytes [ 1 ] != 255 ) {
    decoded . humidity = bytes [ 1 ] ; 
    decoded . humidity &= ~ ( 1 << 7 ) ;
    if ( bytes [ 1 ] >> 7 == 1 ) { decoded . humidity += 0.5 }
  }
  
  if ( bytes [ 2 ] != 255 || bytes [ 3 ] != 255 ) decoded . temperature = ( ( bytes [ 2 ] << 24 >> 16 | bytes [ 3 ] ) / 10 ) ;
  return decoded ;
} 

TTN Payload Decoder (v3)

 function decodeUplink ( input ) {
  var decoded = { } ;
  decoded . vcc = ( input . bytes [ 0 ] + 200 ) / 100 ;
  if ( input . bytes [ 1 ] != 255 ) {
    decoded . humidity = input . bytes [ 1 ] ; 
    decoded . humidity &= ~ ( 1 << 7 ) ;
    if ( input . bytes [ 1 ] >> 7 == 1 ) { decoded . humidity += 0.5 }
  }
  if ( input . bytes [ 2 ] != 255 || input . bytes [ 3 ] != 255 ) decoded . temperature = ( ( input . bytes [ 2 ] << 24 >> 16 | input . bytes [ 3 ] ) / 10 ) ;
  
  return {
    data : decoded ,
    warnings : [ ] ,
    errors : [ ]
  } ;
}