I need to snap a pic of my DB1 now that I have all but the RasPi mounted on the acrylic sheet.  I'll do that just as soon as I get the cabling finished and get that pic posted.

Thanks for the most generous offer.  Actually I've just been googling JST XH connectors and I see an ENGINEER pa-09 Universal Crimping Tool has some good reviews and a reasonable price.  It seems to crimp a bunch of things but JST XH was mentioned.  I have not yet done proper research on these connectors to see if they are what I want go for but they look promising, Nor have I looked properly to see if the crimping tool really any good.  Theres a lot of fake reviews out there.   

Well even if I don't win (I've yet to buy a ticket!) if we get the ability to send personal messages I could be convinced to crimp the XH cables for those that send me the pins, the number, and length of wire that need pins crimped along with a SASE so I can return them.

You may well be correct.  I only got a few cables already made up  with a Grove i2c board for the rpi   I also got a few sockets for mounting but I have not actually used any of those.    I was only thinking to use them for i2c connections hence my continued hope to find something else to settle on, hopefully to the spec's I mentioned previously.  

Maybe the JST XH connectors will fit the bill, but unless some good fellow has a lottery win and buys me a massively expensive crimper maybe I have to keep looking.  ? 

As far as I can tell you can't get the plugs and pins separately but only in pre-made specific length cables.  And they seem to be just 4 pin, no other pin numbers are available.  Did I miss something?

Not as flexible as what I can see the JST XH connectors will be.

https://www.digikey.com/product-detail/en/seeed-technology-co-ltd/110990037/1597-1083-ND/5482561   

And I remember from something I read somewhere, they are not the same at something that looked very similar. A bit vague I know. Whether what I remember was comparing Grove to JST XH I cannot remember and a quick google did not bring anything up. 

@byron you wouldn't happen to have the Digikey part number would you?  I didn't find them on my first search attempt.

There is more info about the system here.

Another cool connector that I've been considering is the QWiiC connectors from Sparkfun, they are intended for I2C devices. I have a few Sparkfun modules with these already.  It's a small JST-type connector, they also sell cables and a surface-mount QWiiC jack.

They also have a QWiiC to Grove cable as well!

@codecage - Steve I'll make a space on my pegboard for the JST XH crimpers! Hopefully, your luck in the lotto is better than mine, I failed to win the 30 million yesterday. Of course, that's 30 million CANADIAN dollars, so it's only about 50 bucks US LOL. But lotto winnings are tax-free in Canada.

@byron - Actually I hadn't thought about a connector episode, that's a good idea. 

?

Bill

Thanks my new best friend!  I'll look into those "grove connectors."   If I win the big lottery I'll buy everyone building the DB1 Robot a set of "official" JST XH crimpers!  But please don't any of you hold your breath until I win.  You're going to turn real BLUE!  I haven't even gone back out to purchase the lottery ticket.  I'm having too much fun crimping XH pins!  ? 

Grove connects are produced by seedstudio https://www.seeedstudio.com/blog/2016/03/09/tutorial-intro-to-grove-connectors-for-arduinoraspberry-pi-projects/ 

They make hats and shields for arduino and rpi for multiple i2c connections but you can just get the connectors to put on your own PCB's.  I see Digikey also sells them.