I Need a Programmer Extension Cable

Go To Last Post
28 posts / 0 new
Author
Message
#1
  • 1
  • 2
  • 3
  • 4
  • 5
Total votes: 0

Greetings, Freaks -

 

I have several of Alank's beautiful little pocket programmers. I have been sending them to customer to do product updates. There is a problem, though. The board was never designed for a pocket programmer. There have been problems shorting to adjacent parts and it really does not fit. I have partially solved the shorting by wrapping electrical tape around the base of the programmer, but there are still problems just getting it into place. 

 

I can solve it with a little 6-conductor "extension cable" 3x2 unshrouded male on one end, 3x2 female on the other. I have scoured the usual sources to no avail. That is not surprising at Mouser or DigiKey, given immense variety of what they have. I know that I can make my own without too much difficulty, but I'd rather purchase the half-dozen or so that I need.

 

Does anyone have any hot suggestions for  source on something like this? 6" length or so would be just fine. Key is compatibility with 6-pin AVR ISP male/female connector set as an "extension" and the male end has to be unshrouded.

 

Many thanks

Jim

 

Until Black Lives Matter, we do not have "All Lives Matter"!

 

 

Last Edited: Thu. Jan 21, 2021 - 09:02 AM
  • 1
  • 2
  • 3
  • 4
  • 5
Total votes: 0

How about these:

 

6 Inches long with a pin on one end and a socket on the other.  You could hot glue the pins in place on the programmer - they can be removed should a wire break - and heat shrink tube around the other end to make a programming header.

 

I can send you a few strips to make up an extension cable, I'll put them in the box with the XPLAIN board I have of yours and a few other items.

 

Cheers,

Right Side Jim

I would rather attempt something great and fail, than attempt nothing and succeed - Fortune Cookie

 

"The critical shortage here is not stuff, but time." - Johan Ekdahl

 

"Step N is required before you can do step N+1!" - ka7ehk

 

"If you want a career with a known path - become an undertaker. Dead people don't sue!" - Kartman

"Why is there a "Highway to Hell" and only a "Stairway to Heaven"? A prediction of the expected traffic load?"  - Lee "theusch"

 

Speak sweetly. It makes your words easier to digest when at a later date you have to eat them ;-)  - Source Unknown

Please Read: Code-of-Conduct

Atmel Studio6.2/AS7, DipTrace, Quartus, MPLAB, RSLogix user

  • 1
  • 2
  • 3
  • 4
  • 5
Total votes: 0

Nice idea but I need something more bullet proof. The person doing the remote update might have a dozen units to work on and having to get every male connector onto the right pin in a confined space is more that I would expect. Also, the people doing this tend to be biologists, not electronikers.

 

HOWEVER, this generates a new idea. Female insulation displacement connectors on ribbon cable are pretty easy to do. The male pins in an unshrouded IDC are a lot less common. Soldering a ribbon cable with heat shrinks for strain relief to the programmer pins would work, then a female IDC at the target end of the ribbon would work. That is still more work than I'd like to do if I can purchase a complete part.

 

Thanks for the idea!

 

Jim

 

Until Black Lives Matter, we do not have "All Lives Matter"!

 

 

Last Edited: Thu. Jan 21, 2021 - 05:33 PM
  • 1
  • 2
  • 3
  • 4
  • 5
Total votes: 0

ka7ehk wrote:
I know that I can make my own without too much difficulty, but I'd rather purchase the half-dozen or so that I need.

Services - Altex Computers and Electronics

[mid-page]

CUSTOM CABLE DEPARTMENT

 

"Dare to be naïve." - Buckminster Fuller

  • 1
  • 2
  • 3
  • 4
  • 5
Total votes: 0

Hmmm, I fear that cost is probably prohibitive at quantities of 6. Might be a good choice at 60, though.

 

Thanks

Jim

 

Until Black Lives Matter, we do not have "All Lives Matter"!

 

 

  • 1
  • 2
  • 3
  • 4
  • 5
Total votes: 1


 

How about something like this....this header  plugs onto your ISP  pins, these long pins sitck up about 1 inch taller than the original isp pins. Then  plug the programmer onto it...hey, it's only an inch, but  maybe that is enough? If you can't find 2x3 , you can perform snip off and sand down surgery...or maybe it would just fit.

I'm not 100% sure the long gold pins have the same or close enough pin dimension to mate with the programmer, but the chance is decent (or other brand might be an exact fit).

 

There are a lot of these types of things for  board-to-board stacking connections.

 

 

this one definitely has squared header pins sticking out 

When in the dark remember-the future looks brighter than ever.   I look forward to being able to predict the future!

Last Edited: Thu. Jan 21, 2021 - 08:28 PM
  • 1
  • 2
  • 3
  • 4
  • 5
Total votes: 0

That is NOT a bad idea!

 

Thanks

Jim

 

Until Black Lives Matter, we do not have "All Lives Matter"!

 

 

  • 1
  • 2
  • 3
  • 4
  • 5
Total votes: 0

 

13 cents each is not a basdd deal & the correct size....these are a bit shorter   https://www.godliz.com/index.php...

 

ALSO see:  http://www.mdfly.com/products/2x...

 

A taller version https://helloyee.en.alibaba.com/...

 

From ebay (20 for $7.95 & free shipping)...I see these are also called stackable headers  https://www.ebay.com/itm/20pc-Ar...

 

 

 

When in the dark remember-the future looks brighter than ever.   I look forward to being able to predict the future!

Last Edited: Thu. Jan 21, 2021 - 08:55 PM
  • 1
  • 2
  • 3
  • 4
  • 5
Total votes: 0

ka7ehk wrote:
HOWEVER, this generates a new idea. Female insulation displacement connectors on ribbon cable are pretty easy to do.

 

This is precisely what you get with a cheap Chinese USBasp from eBay (with a 2x5 to 2x3 adapter in this case). No need to solder the header on the board for Arduino purposes as I generally only need it once to burn the serial bootloader. I just hold it in place.

 

 

  • 1
  • 2
  • 3
  • 4
  • 5
Total votes: 0

No need to solder the header on the board for Arduino purposes 

You can save the cost of the header & just have holes in the pcb & temporarily stick male header cable in for program---it will make enough contact for those few moments (& you don't have to hold it).   The hole pattern can be made slightly zig-zag for a tight fit, so it makes better contact & doesn't fall out.

When in the dark remember-the future looks brighter than ever.   I look forward to being able to predict the future!

  • 1
  • 2
  • 3
  • 4
  • 5
Total votes: 0

These boards ship with a 6 pin male ISP connector and a bunch are out in the field, so that is out!

 

Jim

 

Until Black Lives Matter, we do not have "All Lives Matter"!

 

 

  • 1
  • 2
  • 3
  • 4
  • 5
Total votes: 0

avrcandies wrote:

No need to solder the header on the board for Arduino purposes 

You can save the cost of the header & just have holes in the pcb & temporarily stick male header cable in for program---it will make enough contact for those few moments (& you don't have to hold it).   The hole pattern can be made slightly zig-zag for a tight fit, so it makes better contact & doesn't fall out.

 

Yeah, that's exactly what I do; I just didn't explain it well. The cable terminates in a female header to I just insert a male-male pin header, then just hold it slightly off vertical, and with my fourth hand ... ;) Splaying the header pins slightly would have a similar effect to offsetting the holes.

 

If the customer doesn't need the 2x3 male header installed, it makes the package thinner and saves on postage. 

  • 1
  • 2
  • 3
  • 4
  • 5
Total votes: 0


note you can also take a regular cable and simply change the gender of one end by plugging in  something like this...so you now have a male to female cable

 

 

this example is breakaway...snap to desired size

 

 

 

......anything under the sun!!!

 

When in the dark remember-the future looks brighter than ever.   I look forward to being able to predict the future!

  • 1
  • 2
  • 3
  • 4
  • 5
Total votes: 0

Now, there is an interesting idea!!

 

thanks

Jim

 

Until Black Lives Matter, we do not have "All Lives Matter"!

 

 

  • 1
  • 2
  • 3
  • 4
  • 5
Total votes: 0

And here's another place that makes custom cables:

https://dirtypcbs.com/store/cables

I have no special talents.  I am only passionately curious. - Albert Einstein

 

  • 1
  • 2
  • 3
  • 4
  • 5
Total votes: 0


 

Yay Toby!!

https://www.toby.co.uk/uploads/p...

 

no real details on aliexpress

 

When in the dark remember-the future looks brighter than ever.   I look forward to being able to predict the future!

Last Edited: Thu. Jan 21, 2021 - 10:38 PM
  • 1
  • 2
  • 3
  • 4
  • 5
Total votes: 0

A bit skeptical on that last one, but worth a look! I've seen a couple like that, and the male end tends to have short pins for soldering into thru-hole pcb.

 

Thanks

Jim

 

Until Black Lives Matter, we do not have "All Lives Matter"!

 

 

Last Edited: Thu. Jan 21, 2021 - 11:10 PM
  • 1
  • 2
  • 3
  • 4
  • 5
Total votes: 0

A bit skeptical on that last one

agree... they do say "standard tail" ...it could be bird talk & they give no dimensions/data 

When in the dark remember-the future looks brighter than ever.   I look forward to being able to predict the future!

  • 1
  • 2
  • 3
  • 4
  • 5
Total votes: 0

avrcandies wrote:
note you can also take a regular cable and simply change the gender of one end by plugging in  something like this...so you now have a male to female cable

 

If you don't superglue the adapter in it will get left behind when the cable is removed, half the time... otherwise, I'd go with this. The IDC assemblies are meant to be soldered to the board, not plugged in, and there's a good chance they won't mate reliably, if at all.

 

Straight through IDC headers might be a bit short on one side, but something like this from LCSC https://lcsc.com/product-detail/... are longer on the right angle side (intended to solder to the board) to give a decent contact in an F-F extension socket, I think. Or the pins on a straight-through connector can be pushed through to equalise their length, but I'd be a bit suspicious about the longevity of that.

 

Is there room to make a PCB? Straight/right angle male at one end, straight or right angle female at the other to suit the space?

 

Neil

  • 1
  • 2
  • 3
  • 4
  • 5
Total votes: 0


barnacle wrote:
Is there room to make a PCB?
pictures as tinder  :

 


OSH Park ~

Atmel-ICE - Waveshare Wiki

 

"Dare to be naïve." - Buckminster Fuller

  • 1
  • 2
  • 3
  • 4
  • 5
Total votes: 0

Neil, you are a wonder!

 

Of course a little PCB will do it. I have needed an excuse to take my baptism-by-fire with KiCad and this is it. Pretty inexpensive at OSHPark, also. I LIKE it!

 

THANK YOU!

 

Jim

 

Until Black Lives Matter, we do not have "All Lives Matter"!

 

 

  • 1
  • 2
  • 3
  • 4
  • 5
Total votes: 0

You're welcome. I have often found that another pair of eyes can see a problem a different way. The PCB will give your users something to hold on to, too, rather than fiddling with a header plug.

 

Kicad has many useful tutorials on the web, but its operation was certainly not what I was used to when I came to it from Eagle. Now I'm a huge fan.

 

Neil

  • 1
  • 2
  • 3
  • 4
  • 5
Total votes: 0

Coming from Eagle also. I know, rationally, that every tool change involves a learning curve; I've just been hesitant to invest the time and energy even though I know that I need to do it. 

 

Yes, actually a board has some real benefits. Given the tight quarters where the target programming connector is located, it will actually make it a LOT easier for the user.

 

Thanks

Jim

 

Until Black Lives Matter, we do not have "All Lives Matter"!

 

 

  • 1
  • 2
  • 3
  • 4
  • 5
Total votes: 0

Hi Jim - I also make my programmers in a 1x6 header ended thing for myself - I've used what I call inline ISP for a long time.  It allows you to program a pcb with 6 unpopulated inline holes.  You can program it from either side without reversing the polarity too.

 

 

  • 1
  • 2
  • 3
  • 4
  • 5
Total votes: 0

That might help but the real issue is that the ISP connector is down in a hole and there is a memory card socket that is way too close. I need to get it up about 2". Neil's idea of a little male/female extension board is almost perfect.

 

It is rigid enough to get onto the ISP socket without having to get fingers in there, also (as would be needed with ribbon cable). IDS connectors (for ribbon) with male pins longer than through-hole solder length appear pretty scarce, which surprises me. Having a connector-less board would, indeed, help, here, though that does not solve the issue of the boards on-hand. And, for that board area, even OSHPark is quite affordable.

 

For now, I think that the extension board is THE route for me to follow.

 

Thanks for the suggestion, though. It was an option that I had not considered!
 

Jim

 

Until Black Lives Matter, we do not have "All Lives Matter"!

 

 

  • 1
  • 2
  • 3
  • 4
  • 5
Total votes: 0

I had one other thought Jim - I somewhat recall tpappano using a large heat shrink tube around an entire programmer, with just a small cutout for the LED's and button.  Maybe he has a picture of this - I remember seeing it at his shop.

  • 1
  • 2
  • 3
  • 4
  • 5
Total votes: 0

That is also a really interesting idea. Unfortunately, there really is too much interference between the memory card socket and the programmer, and I need to the bottom edge of the programmer up at least that far. Things are really stressed when the programmer finally gets in and I am expecting, one day, to have to replace a socket because of that. So, the board is still the top solution.

 

I think that the board solution will also be, by far, easiest for users. 

 

Jim

 

Until Black Lives Matter, we do not have "All Lives Matter"!

 

 

  • 1
  • 2
  • 3
  • 4
  • 5
Total votes: 0

Sounds great; I hope it works well!