[Wear-Hard] USB powered MicroOptical

[Greg Priest-Dorman]

>>>>> "Bryan" == Bryan Hurley <bryan.hurley at gmail.com> writes:

Bryan> How does one do the conversion? I haven't seen it documented anywhere.
Bryan> I have both an SV-3 and SV-6. Does it work on both, or only the 3 because of
Bryan> the lower power consumption?

I have the lower power 4bit microoptical and this works fine.  I
beleive Thad does this with his 16bit microoptical.

1) take a usb cable

2) cut off the end

3) identify the VCC and GND line (I just found a picture at
   http://www.pc-control.co.uk/usb%20pinout.htm if you need one)

4) trim the other 2 lines to different lengths so they can't
   inadvertently touch eachother or the power lines. 

5) attach the VCC and GND lines to the contacts on the microoptical.
   I did this by taking an old dead sony battery and cut it up.
   Removed the cells and circuit. Soldered the lines to the inside of
   the (now) empty battery shell.  Now I have a battery like thing I
   can plug into the microoptical and a usb plug on the other.

6) plug it in a powered usb (host) .

7) turn on your microoptical.

It is only getting 5v, so the low battery light on the
microoptical *will flash* but it will continue to work.  You could
always cover or clip that led.

Good luck,

-Greg
-- 

 Greg Priest-Dorman
 priestdo at cs.vassar.edu