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                        lightpack.googlecode.com

===================================================================================
#    Hardware changelog
===================================================================================
-----------------------------------------------------------------------------------
Version hw6.0L
-------------
February 20, 2012

* LED drivers were changed to SiTI
* Supressor for USB
* All CAP filters revisioned
* VREG deleted
* Still in Eagle 5 

Version hw5.5 and 5.5L
-------------
August 11, 2011

* ACT LED resistor reduced to 1K
* C6 cap reduced to 50V 

Version hw5.1
-------------
April 29, 2011

* Linear regulator 3.3V for MCU and LED drivers
* Voltage on LEDs is reduced by the diode, 
  it is necessary to reduce the heat LED drivers
* Added LED for blink when transmitting data via USB
* Added 100nF capacitor for each chip
* Remove RESET button

Version hw5.0
-------------
April 3, 2011

* Led drivers connection via SPI
* Each led driver controls 5 LEDs (summary 10 LEDs)
* One button to enter bootloader mode
* Pads to connect the expansion board with an additional LED drivers
* Pads to connect the SPI
* Pads to connect the USART
* Main board: 86 х 38 mm; Led board: 15 x 15 mm

Version hw4.3
-------------
brunql & atarity, January 29, 2011

* Led ref resistor 1kOm
* Added external board for RGB LEDs

Version hw4.1
-------------
brunql, January 22, 2011

* AT90USB162
* 2 x MBI5026 led drivers
* 8 RGB SMD LEDs
* Using miniUSB Type B connector
* All resistors and capacitors in 1206 package

Version hw4.0
-------------
brunql, January 4, 2011

* Prototyping on 2 MCUs
* First (ATmega8A) work as USB to UART transceiver
* Second (ATmega8A) - control LEDs

Version hw3.7
-------------
brunql, December 13, 2010

* Fix bug with USB D+ D- connection
* Fix bug in schema and board with LATCH of 74HC595
* In PCB 6 (six!) wired jumpers, fixme

Version hw3.0
-------------
brunql, December, 2010

* ATmega8A
* 4 x 74HC595
* 8 x RGB LEDs
* USB Type B
* One PCB with wires to LEDs

Version hw2.1.3
---------------
brunql, January 21, 2011

Edited only schematic of AmbilightUSB:

* Bugfix INT0 must be connected to USB D+


Version hw2.1.2
---------------
brunql, December 9, 2010

Edited only schematic of AmbilightUSB:

* Bugfix quartz 16Mhz, but must 12Mhz
* Bugfix 74HC595 connection (was LATCH - SCL, VCC - RCK, must LATCH - RCK, VCC - SCL)
* Added value of the electrolytic capacitor C1: 1-10uF

Version hw2.1
-------------
brunql, July 26, 2010

* Two printed circuit boards are connected using 5 wires
* ATtiny44-20SSU
* 2 x 74HC595
* 4 x RGB LEDs (SMD)
* many resistors (3 for each RGB LED)
* miniUSB Type B 

Version hw1.*
-------------
brunql, Spring, 2010

* using hardware from ColorsCMP project
* ATmega32
* DM134B
* first 2 (and then 4) RGB LEDs
* miniUSB Type B
