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Hardware projects / Z600 Bootblock
« Last post by joe_zeroh on October 01, 2019, 07:07:10 am »
Hello everyone,

while trying to install a pair X5675 in my old Z600 Workstation the Bios refused to boot. A single X5675 boots fine. According to the HP Quickspecs this processor should be supported. Currently, i assume it is related to my the old bootblock of my Z600 mainboard. I have managed to read the Bios EEPROM with CH341A by de-soldering the Vcc Pin as suggested in other threads for the Z800. By comparing this image to the image contained in the Bios update, i could see that several pages at the beginning of Bios update image just contained 0xFFs, so it is missing the bootblock.

So my questions is: has anyone in this forum with a Z600 Rev003 the possibility to dump the EEPROM and send me the image? Also hints where else i could find this image would be very welcome.

Best regards, Joe
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Hardware projects / Re: A development board for the STM32G081 Cortex M0+ MCU
« Last post by Phil on August 13, 2019, 02:38:24 am »
Yes, SMD connectors (micro or mini) are a separate issue. I agree and only use ones with through hole connections.

Also, re: the crystal, it IS a tuning fork. See:

http://www.nkg.com.hk/pdf/NKG-TIT_TuningForkCrystals.pdf
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Hardware projects / HP Z440 12 pin Memory connector
« Last post by Kamswomy on August 12, 2019, 03:47:24 pm »
The other day I unplugged my GP and the USB charging connector came out  Is this a repairable item? Is there a way to by-pass the missing connector and charge the battery another way??

Help

Michael
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Hardware projects / HP Z800 ATX Power good signal to external power supply unit
« Last post by Kamswomy on August 11, 2019, 04:51:50 am »
Oh
Thank you Very much.

However I had a spare Supply.

Maybe I should say a supply that was not in use, it was purchased for my 3DP11 that had never installed.
My first 3DP11 is working perfectly well with the Original power supply a 12v 30a 360wt.

Though I do appreciate the offer.
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stm32plus C++ library / SOLVEDSSD1963 on an STM32F103ZET6 board is not working
« Last post by Kamswomy on August 08, 2019, 11:41:52 am »
that code looks to be using 0x3f as the address. Have you tried the code you found with MICROSOFTWAY defined to use the NETMF libraries or are you just using the software I2C? Regards,Mark
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Hardware projects / Hacking an HP Z800 motherboard into a standard PC case
« Last post by Kamswomy on August 07, 2019, 02:38:10 pm »
Oh Really important The ICSP header on the dev board is NOT the standard Microchip pin out. Youll need to know how to wire a cable.
 
 ISCP connector details
   Code:
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Hardware projects / Hacking an HP Z800 motherboard into a standard PC case
« Last post by Kamswomy on August 06, 2019, 05:30:29 pm »
Oh Really important The ICSP header on the dev board is NOT the standard Microchip pin out. Youll need to know how to wire a cable.
 
 ISCP connector details
   Code:
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General discussion / Re: Process automation: accurate temperature sensing
« Last post by Bwanna on August 06, 2019, 10:02:00 am »
Hi, I think you may run out of inputs on a single LTC2986. I would recommend downloading the evaluation software from the analog.com site and running the configuration designer to see if what you're planning is feasible.

I'll have to wait until later when I'm near my dev computer.  Maybe a simple question, but are both of the K-type wires needing to be connected to individual channels? ...or can one side of each of the 6 K sensors be tied to one channel?   With RTD's I've tied on side of those to 5v and then measured each separately on the 328p.
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General discussion / Re: Process automation: accurate temperature sensing
« Last post by Andy Brown on August 06, 2019, 09:47:20 am »
Hi, I think you may run out of inputs on a single LTC2986. I would recommend downloading the evaluation software from the analog.com site and running the configuration designer to see if what you're planning is feasible.
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General discussion / Re: Process automation: accurate temperature sensing
« Last post by Bwanna on August 06, 2019, 08:58:43 am »
Andy,

Don't mean to hijack this post, but I've starting planning a similar project and wanted to ask if you would have time to provide feedback?  More than happy to start a new post if you want.  Here's a quick summary of what I'm looking to do:

>Inputs: (6) K-type inputs and (2) 2-wire RTD
>SDI output goes to ESP32 running Ardunio IDE
>ESP32 outputs to TFT 320x240 display

Right now, I have a working version for just the 2 RTDs (and a few digital pressure sensors) with an Atmega328p and TFT display.  This project will add the k-types and a larger display. I've already successfully ported the code over for the display, etc. and am now working the inputs.

My first question is if you think the LTC2986 is an appropriate choice for obtaining input from the 8 (6+2) sensors and sending this to the ESP32 in via the SPI connections?

Thanks for your time in reading this.
Cheers,
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