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 Post subject: Jtagulator
PostPosted: March 12th, 2020, 15:00 
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Joined: September 17th, 2016, 16:06
Posts: 171
Location: India
I am making a couple of boards of JTAGULATOR. In case if some one needs a PCB (unpopulated, withou silkscreen) Let me know
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 Post subject: Re: Jtagulator
PostPosted: March 12th, 2020, 20:01 
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Joined: December 4th, 2012, 1:35
Posts: 3632
Location: Adelaide, Australia
I bought mine fully operational. seems like a lot of work to make your own board and populate it when complete units are not that expensive.

BTW I haven't seen much more to this project. kind of surprised m it didn't take off too much.

I was thinking of trying to do similar to discover NAND pinouts, Dev for the Propeller didn't seem all that hard.. Just not sure if this hardware would suffice or you would need to use a FPGA or something faster than the Propeller.


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 Post subject: Re: Jtagulator
PostPosted: March 13th, 2020, 4:42 
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Joined: September 17th, 2016, 16:06
Posts: 171
Location: India
An operational board built by third party is around 170-200USD a piece. I can ship an unpopulated board for 30USD and populated for 60USD.
I have developed a few pieces for my friends here whom I am shipping for free :D :)


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 Post subject: Re: Jtagulator
PostPosted: March 13th, 2020, 8:01 
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Joined: December 4th, 2012, 1:35
Posts: 3632
Location: Adelaide, Australia
fair enough, Sounds like a great deal for your friends and you! wow I am sure I didn't pay that much when I got mine.

I tried it on a few flash devices to see if there was an JTAG with no success. ;-)


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 Post subject: Re: Jtagulator
PostPosted: March 13th, 2020, 9:12 
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Joined: September 17th, 2016, 16:06
Posts: 171
Location: India
Hello there sir. Pl DM me your address. I just made a cart for mouser and it came to my knowledge that just the ICs would cost about 40USD. In case if you wish to attempt one more time, I would love to send you one for free :)
And if it works, may be you like it. You can surely pay 15USD to me and 15USD to Jtagulator Author in case if they accept any donations. I would be more than happy just sending it :)
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 Post subject: Re: Jtagulator
PostPosted: March 13th, 2020, 9:31 
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Joined: December 4th, 2012, 1:35
Posts: 3632
Location: Adelaide, Australia
Thanks for the offer, but I bought a complete unit, and it works fine. I meant that I tried finding JTAG on some flash devices using my JTAGulator, but could not find any JTAG interfaces.

I should check because I remember Joe Grand, the designer of this, a while ago was working on some updates to the firmware / software for it.

I am not all that experience in JTAG, so entirely possible I did not have environment setup properly and/or didn't know what the hell I was doing! I remember playing with OpenOCD and it wasn't easy, and I don't think project is really moving along anymore.


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 Post subject: Re: Jtagulator
PostPosted: March 13th, 2020, 11:06 
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Joined: September 17th, 2016, 16:06
Posts: 171
Location: India
Understood. In fact for now I have been using JTAG finder and it works pretty ok. Apparently the JTAGULATOR can do the IDCODES nicely and some interfacing with OPENOCD is expected in the future.
So far I have had a super nice mental,logical,motivational and highly informative support from Sourcerer and the learning curve has been very cool for now.


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 Post subject: Re: Jtagulator
PostPosted: March 13th, 2020, 11:52 
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Joined: December 4th, 2012, 1:35
Posts: 3632
Location: Adelaide, Australia
nice. @sourcerer has the passion I have, but the motivation and results I wish I had!


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 Post subject: Re: Jtagulator
PostPosted: March 14th, 2020, 3:53 
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Joined: September 17th, 2016, 16:06
Posts: 171
Location: India
Thanks !!! I like that quote a lot... "Keep Walking"
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 Post subject: Re: Jtagulator
PostPosted: March 20th, 2020, 5:47 
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Joined: September 17th, 2016, 16:06
Posts: 171
Location: India
The boards will arrive by Monday or so.
They look good.
Creating a Mouser/Digikey cart..that goes about 40-50USD of parts per board....The unpopulated board is for 30-35USD with shipping.
Will ship by registered mail (governmental) that takes about 15days. (Same as Aliexpress).

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 Post subject: Re: Jtagulator
PostPosted: March 20th, 2020, 7:35 
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Joined: March 15th, 2020, 16:40
Posts: 9
Location: Republic of Srpska
My dev uses this page:
https://jlcpcb.com/
Its uber cheap and very good quality.


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 Post subject: Re: Jtagulator
PostPosted: March 20th, 2020, 9:17 
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Joined: December 4th, 2012, 1:35
Posts: 3632
Location: Adelaide, Australia
nice!
I hope some people that use them will post some details of using it and any success they have with it.
Actually, just wondering how much JTAG is not marked or hidden, but still accessible? As opposed to locked, or component purposely not populated so JTAG doesn't work "out of the box"...


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 Post subject: Re: Jtagulator
PostPosted: March 20th, 2020, 10:05 
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Joined: September 17th, 2016, 16:06
Posts: 171
Location: India
I would say all the possibilities exist.
What would be the next step in such cases for a determined rev engg?
LA DMM and cross application notes.
I am sure the learning curve is very steep and a long journey.
But atleast pursuing these things nicely can enhance work-employability.
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 Post subject: Re: Jtagulator
PostPosted: March 20th, 2020, 10:10 
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Joined: September 17th, 2016, 16:06
Posts: 171
Location: India
I am yet to order the parts. Literally can not decide to find them locally or be in the laze and order it via mouser.
I have about 10 boards, out of which 2 I am populating for myself first.
Will post the procedure and results. I am positive that the stuff will work.

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 Post subject: Re: Jtagulator
PostPosted: March 21st, 2020, 15:58 
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Joined: September 17th, 2016, 16:06
Posts: 171
Location: India
legija wrote:
My dev uses this page:
https://jlcpcb.com/
Its uber cheap and very good quality.



Hey, your msg was so small, i almost missed it.
thanks for the link

You all guys have added so much to my learning curve, its been a fantastic journey. Thanks once again.

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 Post subject: Re: Jtagulator
PostPosted: March 22nd, 2020, 6:51 
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Joined: March 15th, 2020, 16:40
Posts: 9
Location: Republic of Srpska
On topic, autosensing bidirectional translators used in this design arent the best solution, we used it once and made terrible mistake. Very sensitive to pullup/pulldown on target as suggested by TI on their page about those chips.


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 Post subject: Re: Jtagulator
PostPosted: March 23rd, 2020, 1:01 
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Joined: August 15th, 2006, 3:01
Posts: 2994
Location: CDRLabs @ Chandigarh [ India ]
sin wrote:
I am yet to order the parts. Literally can not decide to find them locally or be in the laze and order it via mouser.
I have about 10 boards, out of which 2 I am populating for myself first.
Will post the procedure and results. I am positive that the stuff will work.

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Simran ,
I am Sure Mouser is very expensive for production ,For prototyping its ok ,I am sure in delhi you can find all that you want to ,But there is a lockdown in the country till 31st ,I think you should hold a bit .What are your plans ,checking jtag on hdd boards ?

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Amarbir S Dhillon , Chandigarh Data Recovery Labs
Logical,Semi Physical And Physical Data Recovery
Website-> http://www.chandigarhdatarecovery.com


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 Post subject: Re: Jtagulator
PostPosted: April 1st, 2020, 9:43 
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Joined: September 17th, 2016, 16:06
Posts: 171
Location: India
I will send you a board .
Lets patchup. You have done enough damage in the past to DeepSpars repute by making a video on dr.Arora and his ways to promote DDI..
in case if you dont want one from my side and wish to keep the sour relations intact, you can also get yourself one printed in Delhi. can send the refernce
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 Post subject: Re: Jtagulator
PostPosted: April 1st, 2020, 9:49 
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Joined: September 17th, 2016, 16:06
Posts: 171
Location: India
legija wrote:
On topic, autosensing bidirectional translators used in this design arent the best solution, we used it once and made terrible mistake. Very sensitive to pullup/pulldown on target as suggested by TI on their page about those chips.


Noted Sir.
Thanks


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 Post subject: Re: Jtagulator
PostPosted: April 1st, 2020, 9:55 
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Joined: August 15th, 2006, 3:01
Posts: 2994
Location: CDRLabs @ Chandigarh [ India ]
sin wrote:
I will send you a board .
Lets patchup. You have done enough damage in the past to DeepSpars repute by making a video on dr.Arora and his ways to promote DDI..
in case if you dont want one from my side and wish to keep the sour relations intact, you can also get yourself one printed in Delhi. can send the refernce
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Hello Simran ,
I would love to get a board ,I have a lot of these things floating around ,I do not agree with you that i have done any videos on deepspar and damaged its repute in anyway ,Might be there is something you heard which i have not done ,Anyways i have 3 products of Deepspar Company 2 DDI4's + 1 Rapidspar ,I have Been Very Active on Rapidspars Forums And Also Helping Many People In The Same ,Incase you see something please send me a pm and i will be happy to clear that too ,I am too old to fight :wink:

_________________
Regards
Amarbir S Dhillon , Chandigarh Data Recovery Labs
Logical,Semi Physical And Physical Data Recovery
Website-> http://www.chandigarhdatarecovery.com


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