Linux/DLPDLCR2000EVM: Red flashing screen

Markus Merk

Part Number: DLPDLCR2000EVM

Tool/software: Linux

Dear DLP team,

The issue I am having is that after setting up the connection with the beaglebone and sending the initial command no DLP LightCrafter Display splash screen is projected. All I see is a flashing red screen.

I followed the user guide/ tutorial and also installed the newest debian version but couldn't get it to work. I attached the code I used to set up the DLP below.

Is there a way to check if the DLP is working properly? Thanks for your help.

#Turning the EVM ON
#Connect BeagleBoard to computer with mini USB cable- wait ~2 min

$ ssh debian@192.168.6.2

#Password is temppwd
#Connect power supply to Lightcrafter

$ sudo su
$ echo 48 > /sys/class/gpio/export
$ echo out > /sys/class/gpio/gpio48/direction
$ echo 1 > /sys/class/gpio/gpio48/value

# activating i2c ports

$ i2cset -y 2 0x1b 0x0b 0x00 0x00 0x00 0x00 i
$ i2cset -y 2 0x1b 0x0c 0x00 0x00 0x00 0x1b i

over 5 years ago

0 Vivek Thakur over 5 years ago

TI__Mastermind 22840 points

Hi Markus,
Welcome to DLP forum and thank you for your interest in DLP technology.

Are you following this tutorial for quick for set-up?
e2e.ti.com/.../621466

Is EVM coming up with slash screen when powered with external supply (without beaglebone)?

regards,
Vivek

0 Markus Merk over 5 years ago in reply to Vivek Thakur

Prodigy 40 points

Hi Vivek,

Yes I was following the quick set-up guide but no unfortunately the EVM splash screen does not show up.
Acctually EVM is not showing anything if I power it with exteranl supply.

Best,
Markus

0 Kyle Rakos over 5 years ago in reply to Markus Merk

TI__Mastermind 20045 points

Hello Markus,

Could you confirm if you were ever able to see an image when powered externally from the Beagle? Could you also ensure the flex cable is securely attached at both ends? It occasionally comes loose.

Thanks,
Kyle

0 Markus Merk over 5 years ago in reply to Kyle Rakos

Prodigy 40 points

Hello Kyle,

When powered through the Beagle using the above-mentioned code (turning on pin48) I see a red flashing screen but nothing else. I double checked the flex cable but nothing changed.

Best,

Markus

0 Kyle Rakos over 5 years ago in reply to Markus Merk

TI__Mastermind 20045 points

Hello Markus,

Does the same issue occur when you power the DLPDLCR2000EVM without the Beagle?

Did the display ever work before this issue occued?

Thanks,
Kyle

0 Markus Merk over 5 years ago in reply to Kyle Rakos

Prodigy 40 points

Hello Kyle,

I can't power the DLP without the beagle because 1 of the pins is not getting an output (pin48).

The display worked before using the code mentioned in the first post.

Thank you for your help,

Best

0 Philippe Dollo over 5 years ago in reply to Markus Merk

TI__Mastermind 28005 points

Markus,

If you find yourself needing to use the beaglebone to turn on the EVM, then something is not working as intended. First off, can you confirm what power supply you are using with the system? Furthermore, once you confirm the power supply I'd like you to check all voltage regulators and confirm that they are all providing good outputs. Let me know if you need assistance with this step.

Best Regards,
Philippe Dollo

0 Philippe Dollo over 4 years ago in reply to Philippe Dollo

TI__Mastermind 28005 points

Markus,

Any updates on this issue? Please reopen this topic by replying if the need arises. Thanks for your attention.

Best Regards,
Philippe Dollo

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Linux/DLPDLCR2000EVM: Red flashing screen