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Engagement
  • Author Author: Former Member
  • Date Created: 10 Jan 2014 3:07 PM Date Created
  • Views 336 views
  • Likes 0 likes
  • Comments 0 comments
  • rpi
  • electronics
  • repackaging
  • monitors
  • sealed
Related
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Sealed Monitor

Former Member
Former Member
10 Jan 2014

Ok, so new to this

 

Been busy with reengineering of a LED-LCD  monitor - largest Ive tried (28 in) for a gas-tight requirement. Still more art than engineering on thermal given taking OPD ( other peoples design ) and reengineering packaging n power with regard to thermal but added temperature measurement to uLAN handling button functions.  Repackaging seems good, crazy external snafu caused reseal ( currently underway ) but all working.    As in this case, Usually end up throwing away plastic packaging ( bezels n covers w_ vents etc and add new mounts etc. Now with LCD & esp LED-LCD and cexternal WORTS able to go passive cooling ( sweet power n quiet )  using aluminum.and no fins ( of course the large package surface and vertical orientation to lower power dissipation  really helps!

 

In past, have successfully reengineered a 12 in & 17 in CRT ( had to use WATER COOLING on 17in but then actine internal fan and passive fins on a re- re engineering )  Oh yeah water next to high voltages !!  Used hall effect n 'magic pencil' for controls to maintain sealing and very expensive military circular connectors.

 

Then DVI and better graphics boards allowed using a sealed a  CCFL 17 in LCD, It was hot - but after testing I went passive internal n external with no fins and still working many hundreds hours later ( still use it as my lab 'beater' CRT.  On this version, I used touch buttins and reengineered existing connectors, removing some ( now very easy to use touch controls of course )

 

Then LED LCDs made much easier thermal design.  Also used uLAN controls instead of buttons and FO for front indicator and existing connectors  like third gen re-engineered technique for seal ( but of course not drip proof  like CPC or milspec )  Did four by two different mfrs and very hard to tell by even back panel/ electronis buldge and unless OSD no tell on front.

 

SO what Im doing - as soon as i wont get frostbite Im cutting metal forsealed RPi and USB Hub for USB Stick NAS.- Designed n going try new button/ indicators for USB / NAS control.

 

Later

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