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bingooo! got it! woof!
---the 8.9 distribution did the trick. it worked even when i updated to 8.10
---the original distribution which was 8.9 that came with beaglebone had issues. because it was not even detecting i2c and as i said before not even booting, when lightcrafter sits on top.
---i had no such problem with 8.9-lxqt image. And I just enabled bone_cape_manager_enable_item_no=dlplightcrafter--a0 name( exclude .dtbo) for v3.8 above.
##Example v4.1.x
#cape_disable=bone_capemgr.disable_partno=
#cape_enable=bone_capemgr.enable_partno=
cape_enable=bone_capemgr.enable_partno=DLPDLCR2000-00A0
---there is also generic option of just externa cape enable which did not seem to work. Ijust stuck to the device tree document.
###Custom Cape
#dtb_overlay=/lib/firmware/<file8>.dtbo
#dtb_overlay=/lib/firmware/DLPDLCR2000-00A0.dtbo
this does not work!
--also slots just had id numbers. dmesg said it identified and loaded. normally slot 4--would have the id. but in my case it just gave the number. could be some mapping( at 5 am, i did not bother).
---Another issue was when i commented some hdmi the beaglebone kind of got bricked. because i was trying to load dlp( with the latest ones)
---booting from USB drive did not work at all. so had to bite the bullet get the sd card and loaded 8.9 image and it simply flashed on to emc. that is strange because it was just suppose to boot from micro-SD card when boot button was pressed. so it basically copied from SD to emc.
--so SD card is popped out it boots.
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before this I had tried raspberry pi but for some reason the i2c pin seems to have messed out. so i am checking with raspberry pi zero.
the gui on beaglebone leaves lot to be desired.especially if you want to project youtube content.
so I will try raspberry pi zero: thanks from another pal who has done it on raspberry. the rasp pi has better memory and 4 usb port. but integration of beaglebone is great with dlp.
May be texas can release a plug for rasp as you do not need all the pins:
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the projector gets hot. so I put a heat sink at the top.
so not sure 5 v, 3a is too much.no problem with 5v, 2a or even 5v from usb!
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So i have to set some exports and xinits. As the desktop for projector is separate from vncserver desktop(uses startx behind the scenes).
so I am unable to control the output from vncserver remote.
but mp4 plays just like promised with native keyboard and keyboard typed on the projector itself( xterm).
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I have a vga monitor. not sure hdmi and vga works. it was not working before update, update for mplayer. it got boosted to 8.10 from 8.9.
but everything else is intact. with old image it flickered and i had to get powered hdmi to vga which cost half of beaglebone on a monday!
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he had no problem with latest image.
so i will have to try that sooner or later.
but there is pin conflict which messes up everything. right from i2c.
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the image download was a nightmare as the connection is always ridiculously slow. it never went above 50kb( my connection is quite fast 4mb!).
so the most of the time the download broke and when it did complete the checksum messed up.
I eventually manged the 8.9 image correct image from one of phillippe's earlier links!
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so we had a success at least
More to come later: RPI!
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next item is to somehow repair the board that i fried with faulty voltage!
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I wish dlplightcrafter had couple of more features: keystone,hdmi connection to reduce the baggage it needs to be run from.
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the heat sink has to get better. the heat is real!
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so thanks phillippe for his patience support. And also to others who have empathized with me all the way.
some of the problems are circumstantial and self-induced. I concur.
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I would keep digging better. as it is paramount to my research.
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but we have a start. very much obliged.