HW-ClockTWO Alpha Board (blank ALL LEDs)

[anool]

HW-ClockTWO Alpha Board (blank ALL LEDs)

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[deleted comment]

[GoogleCodeExporter]

Added control logic for this in init().

To enable:
digitalWrite(COL_DRIVER_ENABLE, LOW)

To disable:
digitalWrite(COL_DRIVER_ENABLE, HIGH)

To speed this up:
PORTC &= 0b11110111; // Enable col driver
PORTC |= 0b00001000; // Disable col driver

Original comment by [email protected] on 28 Nov 2010 at 3:09

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The MEGA can't sink enough to handle both grounds.  I've gotten much better 
brightness with PIN 18 on the Col driver grounded and PIN 19 on the Col driver 
going to PC3 (COL_DRIVER_ENABLE).

Original comment by [email protected] on 28 Nov 2010 at 10:10

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On C2 board, Pin 18 is grounded and Pin 19 goes to PC3 on AtMega. On C3 boards, 
this change must be implemented in the board design

Original comment by [email protected] on 2 Dec 2010 at 4:25

• Changed state: Started

[GoogleCodeExporter]

Confirmed schematic changes on initial clock3.sch.

Original comment by [email protected] on 17 Dec 2010 at 12:38

• Changed state: Fixed