transistor-driven LEDs circuit in a 5*5*5 LED cube

hello,

i've finished long-term project consists of making 5*5*5 led cube controlled arduino mega. unfortunately, there must mistake in circuitry bcs dont seem able light 1 led out of whole cube. tried several leds randomly couldnt turn on any. code , multi-checked wiring electrical shorts, soldering, etc.

http://imageshack.us/photo/my-images/823/wiringfinal.jpg/

so seems 2 things might have gone wrong.

1) there mistake in wiring logic (i quite new transistor sourcing , sinking, might mistake in maths also)

2) multimeter doesnt indicate connection across resistors (but have no idea why, bcs mechanically connected sure , resistance not high not indicate connection)

to sum up, appreaciate if check circuitry , maths (which simple). tried hard find problem, might shame couldnt figure out wrong have no more ideas.

thanks lot of you,
mike

mike
what chip cathodes connected uln2803a? forward voltage , current rating of leds?

check out http://4.bp.blogspot.com/-ltpdhkcwpum/tcyu7voowbi/aaaaaaaaahc/hokktgfarnm/s1600/atmega-matrix-display-circuit.gif
don

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