Add power consumptions to doc

keyboard/hhkb/doc/Bluetooth.txt

@@ -2,3 +2,38 @@ HHKB Bluetooth mod
 ==================
 See this article:
 http://geekhack.org/showwiki.php?title=Island:20851
+
+
+
+Power consume
+=============
+Switch board
+------------
+5V
+18mA        full scan/no power control
+16.5mA      full scan with power control of POWER_ON/POWER_OFF in matrix.c
+3.5-6mA     60ms watchdog timer sleep iwrap/main.c
+
+- the longer sleep time the less power is consumed.
+- power control of swtich board must be needed.
+FET switch may be better, though 18mA is with in port sink current limit. In current design switch board ground is connected to  PB5 pin and power it on by making the pin low.
+
+Blueguiga WT12
+--------------
+3.3V
+-42mA       startup/searching/connecting
+19-23mA     connected
+4mA -8mA    not connected
+
+iWRAP sleep command may not work. to be looked into.
+
+Power Over all
+--------------
+5V
+-65mA       startup
+17-24mA     idle/not connected
+-42mA       connecting
+32-37mA     idle/connecting(with sleep)
+50-53mA     typing/connecting(no sleep)
+
+2013/06/07