+protocol:
+
+send:
+
+LL TT XX XX EE CC
+
+LL - length of message (including checksum)
+TT - type of message
+ 00 - main
+ 01 - error checksum
+ 02 - hardware version
+ 03 - error?
+ 0A - software version
+ 80 - change params
+XX - data
+EE - expected return value (length of reply - 3 bytes)
+CC - checksum
+
+
# hardware version
> 07 02 00 00 00 04 C4
< 08 00 00 [ 93 0B 09 ] FB 0B
> 07 08 00 00 32 00 04
< 04 00 02 12
> 07 02 00 00 00 04 C4
-
< 08 00 00 93 0B 09 FB 0B
+
> 14 80 01 00 06 01 00 00 00 00 00 00 00 00 00 00 00 00 00 52
< 03 56 50