diff --git a/Hardware-design-files.md b/Hardware-design-files.md
index 316cf23..80bef5b 100644
--- a/Hardware-design-files.md
+++ b/Hardware-design-files.md
@@ -8,6 +8,12 @@ This is not presently supported but was added to the production board as it make
 As such, this can be omitted from the build.  
 Non volatile storage is achieved using the "persistent" class available in the ESP32 software suite (uses FLASH memory).
 
+The Bill of Materials and schematic show some errors.
+The Driver IC should be a 74HCT1G126, not the LVC variant as shown, it must be HCT technology.
+The voltage regulator should be a LF33, not LM1117
+
+The silk screen overlay has the labels for R4 & R5 transposed. The 470R should be nearest the switch.
+
 ## Gerber & NC drill design files
 [BTCheater.zip](uploads/1390e8b392675d0606f3917f847d874c/BTCheater.zip)