RAK811 Tracker with Sensor hc-sr04

  • Hi

    How will i go about using the trackerboard with a sensor hc-sr04.

    Does the board have 2 gpio pins that i can use, and what is the command to open a pin and close a pin on RAK.


    pinMode(PA1,OUTPUT);  // Physical pin PA1 on the board ?
    pinMode(PA15,INPUT); / Physical pin PA15 on the board ?
    digitalWrite(PA1,LOW); // Pin PA1 |   LOW is off / HIGH is on ?
    digitalWrite(PA15,LOW); // Pin PA51


  • administrators


    I don't know what project you're using, but I see this comment: LOW is off | HIGH is on


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