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May 18, 2024, 12:00:14 am

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SMF - Just Installed!


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Messages - Andy Brown

31
You could try an SSR. As long as it can switch at the mains frequency and will automatically shut off at the zero crossing then it ought to work.
32
If anyone's in the market for an internal USB 3.0 card that works without any glitches then I can recommend this one from ebay. I use it to hook up the front panel ports on my case.
33
Hi, it's really because the library evolved over the years towards header-only. If you're writing your own library then header only is the way to go in my opinion.

Watch out though for interrupt handlers. They must remain anchored to a fixed address so that the address can be inserted into the vector table.
34
Hi Robert,

Here's a link to the examples source code:

https://github.com/andysworkshop/stm32plus/tree/master/examples
35
General discussion / Re: FPGA sprite graphics accelerator
February 23, 2017, 02:52:36 pm
QuoteHave you ever looked at the MiST FPGA

No I haven't, sorry.
36
Hardware projects / Re: Z800 Compatible RAM
February 21, 2017, 12:54:53 pm
Both options were disabled. The inbuilt help says that NUMA should be enabled for Windows and disabled for Linux, so I enabled it since I'm using Windows 10. That seemed to slightly slow down the benchmarks so I'll be disabling it again.
37
Hardware projects / Re: Z800 Compatible RAM
February 20, 2017, 12:50:00 pm
I've attached my results. They are broadly the same as you describe for yours.
38
Quote from: Vtinh0Souza on February 14, 2017, 02:34:08 pm
I am Brazilian and I live in Brazil, here these dual socket cards are very expensive and the ECC memories are also, I wanted to know if it is possible to use non-ECC memories on this motherboard, my idea is to use two Xeon X5660 and 24GB of ram.

Hi, do a google search for "HP Z800 Memory Configuration and Optimization" and the first PDF result tells you the types of memory supported, which appears to be ECC and registered. 24Gb of PC10600 ECC is available for about US$50-70 on ebay with international shipping. Is there a problem with customs charges importing into Brazil?
39
Hardware projects / Re: Z820 mobo hack. anyone?
February 14, 2017, 02:25:24 pm
Quote from: glauder on February 13, 2017, 07:18:18 pm
I still have to troubleshoot the warnings, but press F1 and ok.

I never bothered eliminating them and to this day I'm still pressing F1 on startup!
40
Quote from: thailoz on January 29, 2017, 01:55:45 am
Hi thanks for an interesting project

I downloaded the pcb files and see that they are all surface mount components do you have the original Th design as at present i have no way of re-flowing smd and don't relish the thought of hand soldering them (read eyes not too good )

thanks

Laurence


Hi Laurence, I think that you may have downloaded the gerbers for my earlier project. Here's a direct link to the gerbers for the android/bluetooth project.
41
Quote
A few of the times the PC turned on, it immediately shutdown and the molex connector with two (12V + ground) was extremely hot to the touch. 

That actually sounds like a short to ground which definitely results in immediate shutdown (done it myself while messing with a modified USB connector and accidentally shorted 5V to ground. Oops.). If you have a multimeter you could probe the resistance from 12V to ground as a check.

Quote
My old card the 7850 would post and load up the bios after a little bit of delay which I assume is for checking the system stability

Yes a fairly large startup delay is normal with this board. I guess it's belt-and-braces checks for workstation-class boards.
42
General discussion / Re: PCB's and SMD components
January 16, 2017, 02:11:37 pm
Well... there are tutorials all over YouTube so I guess you're asking which ones I think are the best? I personally find Dave Jones' eevblog videos easy and enjoyable to watch.

Check out #186, 346, 434, 689. He's probably done more as well.
43
I've just published a new blog article and video that shows how I designed and built a controller board for the NXA66 power supply module that I investigated in a previous article.



Click here to go directly to the article to read more.
44
Quote from: bulls4ever on January 03, 2017, 11:38:02 am
Price of "real" LGA 2011-1 cpus (v2) has not dropped yet to a point it is worth. The ones that really matter are still at $1000+ range (used). Yes, it is possible to grab a low end 12 cores or V1 CPU for $200 and a "low end" motherboard as ASROCK for another $300. But to grab a motherboard with tons of PCIe and 16+ ram slots still cost $700+


Have you seen the stocklist from seller xtrememicro on ebay? They're mostly ES/QS but that wouldn't bother me.
45
Quote from: bulls4ever on January 04, 2017, 10:29:09 amThe cheaper and faster than USB would be to buy one of those cheap PCIe cards that will provide SATA3. It will use one lane and cap at the SATA3 speed: 500 MB/s max depending on the quality of your SSD.

That's what I did - there's a photo of it in the article. I chose it specifically because it allows you to boot from devices attached to it, which is what I'm doing.