Oh, I totally understand where you are coming from. The only issue I have is that not everyone is you or me.Yes, it can be easily done.
Other people notice these posts as well and I need to make sure there is a level set for those that try to do the same thing, blow up a board and then send it in to our RMA shop for us to fix. Everyone is free to do whatever they like to their board. But there are certain things they need to understand before doing so. Gerald On Wed, Mar 12, 2014 at 11:45 AM, Gerald Carpenter < vermonttaxpa...@gmail.com> wrote: > Thanks for noticing my post. > > I wasn't suggesting that the BeagleBone design needs to be changed. I > shared my experience to show that the Beaglebone design allows for a > semi-competent hardware hacker to make nuance changes to solve a particular > problem if one is willing to risk a modest investment. Isn't solving > problems part of the fun? > > I have experienced no problems since I changed *the **polymeric positive > temperature coefficient** device (PPTC, commonly known as a resettable > fuse).* It doesn't look kluged or hacked. All internally measured > voltages and temperatures remain nominal. > My old VGA monitor has a new purpose > > > On Tue, Mar 11, 2014 at 12:09 PM, Gerald Coley <ger...@beagleboard.org>wrote: > >> It is not a fuse. It is a PTC. That is why on the Wiki we recommend an >> externally powered converter. The 5V comes from the power supply in the >> wall, so there is no regulator on the board to overload. >> >> We decided to meet the HDMI specification, so that is the reason for the >> current limit. >> >> >> Gerald >> >> >> >> On Tue, Mar 11, 2014 at 11:04 AM, vermonttaxpa...@gmail.com < >> fridayfoodaff...@gmail.com> wrote: >> >>> My hopes of using a cheap vga monitor drifted away when my HDMI to VGA >>> converter shut down within a few seconds. A peek at the BeagleBoneBlack >>> schematic shows a 100 ma resettable fuse guarding the mini hdmi power pin. >>> It's the yellow thing that looks like a ceramic capacitor. Luckily it's >>> not surface mounted, so is relatively easy to replace with a 200 ma fuse -- >>> digikey#RXEF020-ND. Now 35 cents and ten minutes work later, all is well. >>> I do use a powered USB hub so as not to overload the BB power regulator -- >>> the reason, is suppose, why the designers used the fuse. >>> >>> On Friday, June 14, 2013 1:52:12 PM UTC-4, lee jones wrote: >>>> >>>> Hello all :) (newbie alert btw!) >>>> >>>> I've just recently (only in the last few days) bought a beaglebone >>>> black and also a mini hdmi to normal sized hdmi cable to go with it. >>>> Unfortunatly I'm not managing to get any display with an HDMI to VGA >>>> converter however. >>>> >>>> I can confirm the beaglebone is doing something as I was able to >>>> connect it to a TV with HDMI input, and it displayed a picture ok. >>>> >>>> After looking into all of this I noticed this page regarding HDMI to >>>> VGA converters - http://circuitco.com/support/ >>>> index.php?title=BeagleBone_Black_Accessories#HDMI-VGA_Adapters . My >>>> HDMI to VGA looks very similar but not quite the same to that converter, in >>>> fact it looks rather like this - http://www.amazon.co.uk/ >>>> Adapter-Laptop-Power-Free-Raspberry-support/dp/ >>>> B0088K7QUQ/ref=sr_1_2?ie=UTF8&qid=1371231750&sr=8-2& >>>> keywords=HDMI+to+vga >>>> >>>> One difference I noticed is that the one linked to in the circuitco >>>> webpage appears to be powered (presumably by the micro usb port on the >>>> converter?). Mine dosen't have that at all; btw originally my converter was >>>> bought to be used with the rasberry pi. Since one converter is powered and >>>> the other isn't am I right in assuming that the beaglebone dosen't supply >>>> the neccecary +5V to power a device connected to the HDMI port at all, >>>> hence the failure? >>>> >>>> This is only speculation but prehaps most of the HDMI to VGA converters >>>> originally bought for rasberry pi's and then subsequently used to try to >>>> work on the beaglebone black won't work at all? >>>> >>>> ljones >>>> >>> -- >>> For more options, visit http://beagleboard.org/discuss >>> --- >>> You received this message because you are subscribed to the Google >>> Groups "BeagleBoard" group. >>> To unsubscribe from this group and stop receiving emails from it, send >>> an email to beagleboard+unsubscr...@googlegroups.com. >>> For more options, visit https://groups.google.com/d/optout. >>> >> >> -- >> For more options, visit http://beagleboard.org/discuss >> --- >> You received this message because you are subscribed to a topic in the >> Google Groups "BeagleBoard" group. >> To unsubscribe from this topic, visit >> https://groups.google.com/d/topic/beagleboard/B51_9eAH9vE/unsubscribe. >> To unsubscribe from this group and all its topics, send an email to >> beagleboard+unsubscr...@googlegroups.com. >> >> For more options, visit https://groups.google.com/d/optout. >> > > -- > For more options, visit http://beagleboard.org/discuss > --- > You received this message because you are subscribed to the Google Groups > "BeagleBoard" group. > To unsubscribe from this group and stop receiving emails from it, send an > email to beagleboard+unsubscr...@googlegroups.com. > For more options, visit https://groups.google.com/d/optout. > -- For more options, visit http://beagleboard.org/discuss --- You received this message because you are subscribed to the Google Groups "BeagleBoard" group. To unsubscribe from this group and stop receiving emails from it, send an email to beagleboard+unsubscr...@googlegroups.com. For more options, visit https://groups.google.com/d/optout.
