   Serial1.begin(115200);    	//initialize Serial1
   Serial.begin(115200);    	//initialize Serial1
 
-  for(int i = 0; i < buffer_size; i++) buffer_in[i] = '\0';
+  for(int i = 0; i < buffer_size; i++) buffer_in[i] = 0;
 
   ww.initialize();
   ww.draw_string(5, 6, "BLUE", Color(30, 35, 255).color_16(), 3);

WearableWayfinder ww = WearableWayfinder(&tft);

int old_pot = 0;
const int buffer_size = 128;
char buffer_in[buffer_size];
int char_index = 0;


    char cur_char;
    while((cur_char = Serial1.read()) != -1){
      buffer_in[char_index] = cur_char;
      char_index = ++char_index % buffer_size;
    }
    Serial1.print("received string:");
    Serial1.println(buffer_in);
