PixHawk 2.1 - JST GH connector specs & ordering

Posted by Ken McNamara on October 5, 2017 at 4:06pm

Occasionally it seems that even with the excellent cables provided with the Pixhawk 2.1 - you'll need to make a special cable.

9 of the connectors on the top of the Pixhawk 2.1 are JST GH connectors

I didn't see specific part numbers or sourcing for the plugs - so I'm posting it here.

There are 4,6, and 8 wire sockets.

Here's the part numbers (JST, then Digi-Key) for the mating plugs:

4 pin - GHR-04V-S      455-1594-ND  ($ 0.0928 ea in 25 qty)

6 pin - GHR-06V-S      455-1596-ND ($ 0.1296 ea in 25 qty)

8 pin - GHR-08V-S      455-1598-ND ($ 0.144 ea in 25 qty)

Crimp pins -- SSHL-002T-P0.2       455-1606-1-ND  ($ 0.0649 ea in 100 qty)

I have a hand-crimper on order from Amazon - if it works I'll post the results here.

KenMc

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Tags: jst gh, pixhawk2 connectors
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Replies

  • Ken McNamara December 2, 2017 at 5:49pm

    Lyn -

    Sorry it took me this long to reply.

    You are correct.  My approach was a bad idea for a couple of reasons.

    I used the PA-09 crimping tool - the terminals required the smallest (1 mm) die.  The tool made excellent conductor crimps - but I could not get a good insulation crimp.

    For larger terminals this probably wouldn't be a problem - but the plastic GH connector bodies require that the insulation crimp be as exact as the conductor crimp.  When it's not, the terminal can't be inserted into the body.

    There's a more important reason why this is a bad idea.  i realized that even if I made what appeared to be a perfect crimp - I couldn't be certain that it was.

    If I was making crimps for a rover - that might be okay - but aircraft require a higher level of reliability.  There's a reason why aircraft don't fall out of the sky very often - I'm not sure drones meet this level of reliability yet - but they will have to.

    Thank you for the listing the pre-crimped cable.

    My object was rewiring a GPS module - I'm going to splice onto a commercial Pixhawk 2.1 GPS cable (that already has a GH connector).

    Lyn Rees said:

    Let me try to understand this. Are you looking to crimp GH terminals to a cable? If this is so first of all good luck, I hope your eye are better than mine, they probably are! As an alternative DigiKey stock a pre-crimped cable (455-3074-ND). This what I use and cut the other end to fit my crimp of choice. Is that an alternative for you?

    Lyn.

  • Ken McNamara October 21, 2017 at 5:19pm

    You might be able to find the parts from a different supplier - the first part number is the JST number.

    Thanks for the pre-crimped cable suggestion - that is a really good point - I should have caught that when I was searching Digikey - could have ordered with the last order (can't bring myself to placing an order where the shipping costs more than the material).

    My current problem is putting a new connector on a GPS module.  For that I'm going to cut, strip and crimp - I'll post the result.

  • Lyn Rees October 21, 2017 at 2:50pm

    As you may have noticed I live in the UK so my premiums are worse than most:-). I need to spend £33 (>$40) before I even get free shipping!!

  • Simon L. October 21, 2017 at 2:43pm

    I make any cable I need and the smaller ones are tedious; after some practice and with a good quality crimping tool like the one mentioned previously, its not so bad. Once the pin is held in the pliers, its easy. The hard part is positioning it correctly for the 'perfect crimp' Also, thanks for the link, its certainly something to consider... Digi-key has everything if you are willing to pay the premium.

  • Lyn Rees October 21, 2017 at 2:10pm

    Let me try to understand this. Are you looking to crimp GH terminals to a cable? If this is so first of all good luck, I hope your eye are better than mine, they probably are! As an alternative DigiKey stock a pre-crimped cable (455-3074-ND). This what I use and cut the other end to fit my crimp of choice. Is that an alternative for you?

    Lyn.

  • Simon L. October 20, 2017 at 4:21am

    I use the Engineer PA-09 crimping tool for all my needs:
    https://www.amazon.ca/Engineer-PA-09-Micro-Connector-Crimpers/dp/B0...

    They also make another model for bigger pins: the PA-20

    Robot Check
  • Guy Tzoler October 15, 2017 at 11:49pm

    any updates regarding the hand crimp tool?

    thanks

  • Ken McNamara October 6, 2017 at 2:30am

    Duh...somehow I double posted this...any idea how to delete one of the postings?

This reply was deleted.