Open Source Hardware

User avatar
Posts: 2423
Joined: Thu May 17, 2012 8:53 pm
Location: WA

Re: Open Source Hardware

Postby Tazzi » Wed Apr 14, 2021 8:57 am

Gampy wrote:Having a hard time wrapping my oxygen deprived and inexperienced mind around the hardware.

Could you more experienced folks tell me if this device (hardware wise) would be compatible with most vehicles ??
Not concerned about firmware or drivers, just the hardware.

If not, what vehicles would it not work on ??

Thank you!


Since it supports CANbus, itll be able to most modern vehicles which utilize CAN. :thumbup:
Your Local Aussie Reverse Engineer
Site:www.envyouscustoms.com
Mob:+61406 140 726
Image

User avatar
Posts: 1070
Joined: Sat Dec 15, 2018 7:38 am

Re: Open Source Hardware

Postby Gampy » Fri Apr 16, 2021 4:28 am

Thanks Gents!
Improve Knowledge -=- Share Yours!

User avatar
Posts: 1070
Joined: Sat Dec 15, 2018 7:38 am

Re: Open Source Hardware

Postby Gampy » Sun Apr 18, 2021 4:36 am

Could I please get some help selecting compatible replacements components for the 6 components in the attached Excel sheet that are unavailable at either Digi-Key or Mouser ...

I prefer Mouser, I have an account there ... But it's not a deal killer!

The Seventh item in the file is available at Digi-Key, not Mouser, if it could be replaced with a compatible item from Mouser that would be awesome.

Thank you!
Attachments
Unavailable.xls
(22 KiB) Downloaded 12 times
Improve Knowledge -=- Share Yours!

Posts: 329
Joined: Mon Mar 09, 2020 4:35 pm
Location: California

Re: Open Source Hardware

Postby In-Tech » Sun Apr 18, 2021 5:02 am

https://www.findchips.com/search/ATSAM4E8CA-AU
findchips.com is always good for finding stock, newark and avnet shows some stock on the atmel :)

User avatar
Posts: 1070
Joined: Sat Dec 15, 2018 7:38 am

Re: Open Source Hardware

Postby Gampy » Sun Apr 18, 2021 5:35 am

And octoparts.com ...

Unfortunately finding them and being able to purchase them where found is worlds apart!
That's why the ask was for compatible replacements.
Improve Knowledge -=- Share Yours!

User avatar
Posts: 10105
Joined: Sat Feb 28, 2009 9:05 pm
Location: Tenambit, NSW

Re: Open Source Hardware

Postby Holden202T » Tue Apr 20, 2021 9:09 am

yeah its starting to really have an impact, parts i bought not that long ago are now all on back order

User avatar
Posts: 2423
Joined: Thu May 17, 2012 8:53 pm
Location: WA

Re: Open Source Hardware

Postby Tazzi » Tue Apr 20, 2021 10:55 am

The gmlan chip I use went from $1.20 to $8.50.
One of the processors I also use has jumped up to over $20aud.

And even had to bail on the bluetooth module being used originally as its skyrocketed to over $25 each.

I have no doubt that there are some business's absolutely hording parts to do assembly themselves or supply to places due to just how crazy its getting.
Your Local Aussie Reverse Engineer
Site:www.envyouscustoms.com
Mob:+61406 140 726
Image

User avatar
Posts: 1070
Joined: Sat Dec 15, 2018 7:38 am

Re: Open Source Hardware

Postby Gampy » Tue Apr 20, 2021 12:27 pm

IMHO they are intentionally sitting on them waiting for the prices to sky rocket using the pandemic as the price hike excuse!
In other words price gouging!

WooHoo, I think I'm gaining ground ...

2. Would 603-AC0402FR-075K49L be a good replacement for 603-RC0402FR-075K49L ??
3. Would 603-RC0402FR-1368KL be a good replacement for 603-RC0402FR-0768KL ??
4. Would 863-NCP730ASN500T1G be a good replacement for 621-AP2204K-5.0TRG1 ??
5. Would 863-NCP730ASN330T1G be a good replacement for 621-AP2204K-3.3TRG1 ??
6. Would 863-NCP730ASNADJT1G be a good replacement for 621-AP2204K-ADJTRG1 ??

I don't know what things like Dropout Voltage are, so I'm purely guessing on the Linear Voltage Regulators ...

That leaves 1 item (row 7) needing replacement options, the MCU: ATSAM4E8CA-AU
The hardest one to replace ... I suspect there is a newer chip that is basically the same, different numbers and I don't know enough about them.
I don't don't give up easy ...

The 7th item (row 9) (863-BAS16LT1G) is now in stock at Mouser.

Has anyone built the Firmware, got the isotp-c and bitfield-c libs ??
Or basic steps to build them ...
Improve Knowledge -=- Share Yours!

Site Admin
User avatar
Posts: 6562
Joined: Sat Feb 28, 2009 8:34 pm

Re: Open Source Hardware

Postby antus » Tue Apr 20, 2021 5:57 pm

At a glance those components look good. The main things are the footprint (0402 for the resistors, and... ?) And if you have a choice of ratings, you generally want industrial or mil spec as the interfaces can cop some out of spec voltages and temperatures in cars.

I see you can buy a 5 pack of those AT SAM MCUs on ebay here https://www.ebay.com/itm/Microchip-Tech ... 4194231369

Not a good long term solution but if you just want to build up a couple and have a play that should do it.

Im not sure anyone has built the firmware, I dont think it would be easy, but hopefully i'm wrong on that. Pretty cool that your giving it a shot! And the J2534 drivers on the pc side could get interesting too.

Are you going to try and hand build it? Do you have experience with SMD at this level?
Have you read the FAQ? For lots of information and links to significant threads see here: viewtopic.php?f=7&t=1396

User avatar
Posts: 1070
Joined: Sat Dec 15, 2018 7:38 am

Re: Open Source Hardware

Postby Gampy » Tue Apr 20, 2021 9:04 pm

No, I do not have SMD experience at that level, I have never done double sided boards, nor that narrow of pitch.

I'm trying to find someone to populate a small batch for testing before making a larger batch.
Most companies that can populate are not going to purchase off ebay, however some accept customer supplied components, so ebay is not completely out. Thank you for pointing them out.

The driver is good to go for now ... I have it functioning on that POS STiC J2534 that I wound up paying a fortune for! (been USB snooping on that)
It's NOT fully featured, but it does work!

I do not know why yet, however there are two drivers, one is C/C++, the other is C#, why one would do a driver in C# is beyond me, in this case it's TWO dll's, a CLR interoperability dll talking to the C# driver dll ...
Thus in a C# application the communication path would be YourApplication -> YourApplicationInteroperabilityDLL -> DeviceInteroperabilityDLL -> DeviceDriver -> USBDriver -> Device ... :shock: :wtf:

The firmware does appear to be missing code!
After getting through the missing bitfield-c and isotp-c libraries, It's latest complaint is it's missing 'TimeoutCallback' ...

I find NO HINTS as to what it is other then what the names implies!
Not sure I'm going to be able to get through this one ... We'll see.

Sure be nice if the original authors popped in and enlightened us.
Improve Knowledge -=- Share Yours!

PreviousNext

Return to Tool Development

Who is online

Users browsing this forum: No registered users and 3 guests