RGB clock

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Revision as of 18:09, 9 January 2012 by Tom (talk | contribs) (Pinout)

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RGB clock

This is the documentation page for the RGB clock kit.

Overview

Driver PCB for up to 64 common-anode RGB LEDs, or 192 normal LEDs. The PCB is designed for 1:3 multiplexing of the LEDs, and is equipped with 8 74HC595 shift registers (configured as 4 16-bit deep registers), 64 current-limiting resistors (220 Ohm by default) and 3 FETs to switch the cathode groups on-and-off. The PCB is equipped with a bitwizard-standard 20-pin IO connector, designed to work together with our USB-multio PCB, but it is also possible to connect our FTDI-ATmega, USB-bigmultio or Cyclone dev board, or one of your own boards.

Assembling the kit

External resources

Pinout

SV10 is connected as follows

1GND
2GND
3SER0
4SER1
5SER2
6SER3
7!OE
8LATCH
9!RESET
10CLOCK
11R
12G
13B
14external clock source
15IO1
16IO0
17IO3
18IO2
19VCC
20VCC

SV1 through SV8 are connected as follows:

1A0
2A1
3A2
4A3
5A4
6A5
7A6
8A7
9R
10G
11B
12GND

SV9 can be used to connect an external clock source, or a servo motor, or...

1GND
2VCC
3connected to pin14 form SV10
  • D2 is connected to VCC from SV10
  • D3 is connected to USB power
  • D4 is connected to pin17 from SV10
  • D5 is connected to pin18 from SV10
  • D6 is connected to pin15 from SV10
  • D7 is connected to pin16 from SV10
  • Switch1 (next to R71) is connected to pin16 from SV10
  • Switch2 (next to R72) is connected to pin15 from SV10
  • Switch3 (next to R73) is connected to pin18 from SV10
  • Switch4 (next to R74) is connected to pin17 from SV10

Jumper settings

JP1: Power supply selection. Open: LED driver board and microcontroller board have individual powersupplies Closed: VCC from LED driver board and microcontroller board are connected.

Future hardware enhancements

  • Replace 2 12-pin connectors by 1 20-pin connector
  • Add numbers to the pushbutton switches

The software

Changelog

1.0

  • Initial public release