Recent Posts

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Hardware projects / Screen for PICs
« Last post by Terry on March 20, 2017, 05:49:04 am »
Hi,  My first post.

I use PICs for my projects and BASIC is my language (I don't have the time/brain and inclination to move to Arduino)

I need some kind of screen for readouts etc, and normally use either simply LED flashing, or for text, the 2line-4line LCDs.  I'm trying to get my circuits to be smaller and saw this screen: http://www.dx.com/p/open-smart-2-0-touch-screen-expension-board-w-touch-pen-for-arduino-450742   

Now I find I need a cumbersome extra Arduino board or similar to make it work.

1/ Is it possible to get anything out of these screens using PICs?
2/ If not is there another screen that I can use, driven only by a PIC?

Cheers, Camerart.
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Hardware projects / Re: Hacking an HP Z800 motherboard into a standard PC case
« Last post by Andy Brown on March 18, 2017, 01:30:51 pm »
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.
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stm32plus C++ library / Re: Why stm32Plus is not fully header-only?
« Last post by Andy Brown on March 18, 2017, 01:27:52 pm »
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.
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Hardware projects / Re: Hacking an HP Z800 motherboard into a standard PC case
« Last post by LambdaFox on March 14, 2017, 11:19:44 am »
You can upgrade to USB 3.1!

I bought a new ZTC ASMedia ASM1142 USB 3.1 pci-e card. I put it in slot 7.  When I booted up, I saw those old familiar memory errors from my H310 install. Covering pins 5 & 6 on the USB 3.1 card made the errors vanish.

I was then able to install the drivers in Windows 7 Pro 64-bit using the included mini CD.

Device Manager shows the driver to be version 1.16.23.0. 

I will post back if I notice any bugs.

Update:  The DELL PERC H310 Can Be Hacked Into the Z800!  :)

HP P410 works fine, i used it on my build with the 512MB and battery backed cache, also used a HP P400 and the standard LSI controller...all worked with my SAS 15K HDD's....

While waiting for my new P410, I installed Windows on my hard drive RAID using the on-board controller.  That was slow slow slow.  Noticably slower than the H310 had been.  Did I mention it was SLOW???

This made me leary about using the P410 since it drops SATA down to SATA2.  So, I did a little more digging on the H310.

I found this discussion about the H310 preventing machines from booting.  Covering pins B5 and B6 with electrical tape solved my problem.



Some people in several discussions I saw were trying to change the firmware to LSI or other versions.  I am using the standard latest firmware and drivers from Dell.

The errors regarding the bad memory are now gone.  When I installed Windows 7 in spite of the errors, I noticed that the Intel controller did not show up in Device Manager.  I originally thought this was probably because I had all the SATA ports and the option ROM for the controller disabled in the BIOS.  This turns out not to be correct.  With this hack the Intel Controller now shows in Device Manager, where I have Windows disable it after boot.

I will report any glitches I find, but so far it looks good!
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stm32plus C++ library / Why stm32Plus is not fully header-only?
« Last post by zupazt3 on March 14, 2017, 05:59:30 am »
Hi,

I'm just wondering: why isn't stm32plus fully header-only library? A lot of functions are inline and are included in *.h but some are in *.cpp.

Why is that? What are the props? What's the reasoning behind this?

I'm thinking about exercising a bit by writing my own library and I wonder why shouldn't I do it all as header-only?
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stm32plus C++ library / Re: Stm32plus examples web page
« Last post by Andy Brown on March 08, 2017, 12:40:56 am »
Hi Robert,

Here's a link to the examples source code:

https://github.com/andysworkshop/stm32plus/tree/master/examples
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stm32plus C++ library / Stm32plus examples web page
« Last post by robertkendrick on March 07, 2017, 10:20:10 am »
Hi
Maybe just my browser but the 'click to see full source code ...'  links do not not seem to be working on the stm32plus examples page.
For reference my browser is Chrome on WindowsXP Version 49.0.2623.112 m
regards
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Hardware projects / Re: Z820 mobo hack. anyone?
« Last post by norbertano on March 04, 2017, 12:09:43 pm »
Hi there. If you interesting, one aliexpress seller sells adapter for usual ATX power supply but the price is very high
https://www.aliexpress.com/store/product/PSU-ATX-Power-Conver-Cable-24-Pin-to-18-Pin-8-Pin-to-8-8-6/215107_32778125250.html?spm=2114.12010612.0.0.5294Zq
If someone have power cable for CPU0,CPU1 and memory (hp p/n 647111-001), I ask him to help with pinout, I've tried to probe signals with multimeter but I'm not sure about three contacts
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General discussion / Re: PCB's and SMD components
« Last post by LulaNord on March 03, 2017, 10:54:46 am »
Hi...i think easily you can find its tutorials. But i would like to tell you something. TFTs like these draw a very small amount of current, typically less than 10mA so I will supply it indirectly from a GPIO pin through the level converter. This allows me to control the order in which power is applied. Many TFTs prefer their I/O supply to come up before the panel supply and for safety I’m going to assume that this is the case with this device. Had the device required significant amounts of current I would have had to use a couple of transistors to switch the current on and off.

pcb prototyping
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Hardware projects / Re: Z820 mobo hack. anyone?
« Last post by davidK on March 01, 2017, 10:16:41 am »
here is how it looks so far. waiting for 2 original heatsinks to install teh fan box back. couldnt find any OEM  solution so far.
single 16gb ram installed. second ram in any upped slot gives error, bioas cant c it anyways. thinking of getting exact matched hp part ram set.
cant put the gpu without removing the metal thingie.
enjoy pics )








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