haya

On the Netduino yea I think so (I don't have the code in front of me though). And you have GND as well hooked up? It should be DATA, WR, CSx and GND (plus power of course). It's hard to troubleshoot, but triple-check your connections, it can be hard to get the pins right on the matrix, I made a few mistakes there initially. It's possible there's been some change to the firmware that made my code incompatible, I don't have my stuff available so I can test it now either (moved, everything is in boxes). Sorry I can't help you.

I've checked since yesterday, anyway thanks for your help.
I'll hook up to the arduino to check if the matrix is really ok, maybe it is broken.

Did you connect one of the CSx pins as well? The 3 below are for the data, but then you need to select the module by hooking up one of the CSx-lines (I don't remember if it goes high or low, read datasheet or just try, no harm).

pin 0 is for CS right ?

ok, that's a good start. My guess is that it's some signal that isn't set up properly, but it's hard to tell without looking. Do you have some analyzer or just LED that you can use to see if you have signal on the pins out from the Netduino?

I've tested with some leds and all pins(13, 11, 0) have signal. Maybe I should try with an alpha firmware but I cannot find it although the beta I use has variable bit lenght SPI. I have no other ideas.

It sounds like you don't have the beta-firmware with the variable-SPI feature.

/Hakan

Thanks for the fast answer.
Yes, it's the beta from here http://forums.netdui...?showtopic=1592 but it has variable-SPI : 5. Variable-bit SPI (9 to 15 bit) capabilities (courtesy of community member CW2)

Hi there, I have the LED matrix from sureelectronics http://www.sureelect...ods.php?id=1136 and I try to get it work with netduino. I've made all connections as kenNET shows in his pictures, I've upgraded to the firmware 4.1.1.0 but nothing. The code runs with the message "The thread '<No Name>' (0x2) has exited with code 0 (0x0)." but nothing on the matrix. Any help will be appreciated. Thanks.