diff --git a/hidReader.ino b/hidReader.ino
index 421cf27..3b6c36b 100644
--- a/hidReader.ino
+++ b/hidReader.ino
@@ -26,23 +26,21 @@ volatile size_t   bitCount = 0; // number of bits recieved
 
 volatile unsigned long weigand_idle_start;
 
-inline void gotBit() {
+inline void gotBit(char bit) {
   weigand_idle_start = millis();
+  Serial.print(bit, BIN);
+  bitWrite(dataBits, DATA_SIZE - bitCount, bit);
   bitCount++;
 }
 
 // interrupt that happens when INTO goes low (0 bit)
 void ISR_INT0() {
-  //Serial.print("0");
-  dataBits &= ~(1UL << (DATA_SIZE - bitCount));
-  gotBit();
+  gotBit(0);
 }
 
 // interrupt that happens when INT1 goes low (1 bit)
 void ISR_INT1() {
-  //Serial.print("1");
-  dataBits |= 1UL << (DATA_SIZE - bitCount);
-  gotBit();
+  gotBit(1);
 }
 
 void setup() {