RAK811 Tracker with Sensor hc-sr04
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
I don't know what project you're using, but I see this comment: LOW is off | HIGH is on