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OLSD Rev 4

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OLSD V4 Arduino Shield Prototype
OLSD V4 Arduino Shield Prototype


Specifications:

  • Scan Rates: 1 kpps to 30 kpps
  • XY Resolution: 12 Bits
  • Color Resolution: 5 bits (for a total of 32,768 colors)
  • Colors: Red, Green, Blue outputs
  • TTL Shutter Output
  • Built in test patterns accessible by button.

So what are the big differences between Rev4 and Rev3? Here is the list:

  • Rev4 has a XY Voltage reference for a more stable picture.
  • Rev4 has more colors! 32k vs. 512
  • Rev4 has more free IO pins so you can do more with your arduino!

Ordering Boards:

I have uploaded the Eagle .BRD file to OSHPark.com board service for the convenience of ordering the boards. The service provides 3 boards for around $26. If you would like less expensive boards (less quality) then try Dirty PCBS. They also take Eagle .BRD files directly. For any other services use the Gerber files provided in the Hardware release below. Most services take Gerber files zipped up in a zip file.

Downloads:

USB Drivers Zip or Self Installing -> latest drivers can also be found here on FTDI's web site.

To install the Arduino library, unzip and copy the OLSD folder into the Libraries folder of your Arduino Application. Then close and restart the IDE. There will be 4 examples available as well accessible from the File->Examples->OLSD sub menu.

Arduino Port Map

JmpArduino PinAVR PinDirectionOLSD Func
J1Digital 0PD0InputSerial RXD (on Arduino)
J1Digital 1PD1OutputSerial TXD (on Arduino)
J1Digital 2PD2OutputStatus LED (1 == ON)
J1Digital 3PD3(INT1)InputUser Switch (0 == Pressed)
J1Digital 4PD4OutputILDA Shutter
J1Digital 7PD7Output#CTS (needs jumper #CTS->FTDI)
J2Digital 8PB0OutputLatch Color Regs (1 == Latch)
J2Digital 9PB1Output#LDAC on uChip DAC
J2Digital 10PB2(SS)Output#CS on uChip DAC
J2Digital 11PB3(MOSI)OutputMOSI (SPI Data Out)
J2Digital 13PB5(SCK)OutputSCK (SPI Serial Clock)

ILDA 25 Pin D-Sub MAP

PinFunction
1X+
2Y+
3NC
4Interlock (Connected to Pin 17)
5R+
6G+
7B+
8NC
9NC
10NC
11NC
12NC
13Shutter
14X-
15Y-
16NC
17Interlock (Connected to Pin 4)
18-20Ground (for color outputs)
21NC
22NC
23NC
24NC
25Ground