diff --git a/grok.py b/grok.py
new file mode 100644
index 00000000..e91e7a07
--- /dev/null
+++ b/grok.py
@@ -0,0 +1,34 @@
+# Takes pulseview Hexadeciomal digits export
+
+import re, sys
+from bitarray import bitarray
+
+f = open(sys.argv[1], 'r')
+
+MHZ=6
+CELL=4*MHZ
+THRESH=2*CELL-MHZ//2
+
+b = bitarray()
+count, prev, run = 0, 128, 0
+for line in f:
+    if count == 1000:
+        break
+    if not line.startswith('RDATA'):
+        continue
+    count += 1
+    for i in range(6, len(line)-1, 3):
+        x = int(line[i:i+2], 16)
+        for j in range(8):
+            level = x & 128
+            if level != prev:
+                prev = level
+                if level == 0:
+                    while run > THRESH:
+                        b.append(False)
+                        run -= CELL
+                    b.append(True)
+                    run = 0
+            run += 1
+            x <<= 1
+print(b)