will my gear be damaged by using a 1x3 pin header?
if i’m connecting the 1x3 header to a 2x3 array of 6 pins, aside from matching the GND orientation, is there anything else I should know about to connect properly?
I found the Sparkfun connectors awkward to work with, especially if you’ve never messed with them before aside from plugging them in.
I ordered 6 (so I’d have extra for other projects) and broke 3 of them just figuring out how to separate the two pieces, and another trying to assemble it.
If anyone would be up for posting a quick how to for total novices that would be awesome. I’m not remotely experienced with building electronics and likewise do not want to fry my beautiful Teletype
@glia, should be good. In fact, @bpcmusic sells 1x3 cables in his store.
EDIT: read your initial post too quick. I have connected a TX with 2x3 header (and 3 of the slots unconnected to a pin on the TX module), as well as used a 1x3 cable with Just Friends and nothing bad has happened.
Are there any issues with using a longer i2c cable? I’m finding that I’d like to put my Just Friends module on the opposite side of my case where the Teletype is located. I’ve got an ER-301/Earthsea/Ansible also hooked up via the backpack. The cable I’d like to make would be about double/triple the usual length.
It depends, I’ve had some trouble with EM interference on longer I2C lines in some DIY projects (not in your application though). The I2C protocol recommends short lines as well. It really depends on the total capacitance of your cable and the value of the pull-up resistors in your machine.
there’s been many posts on this. female to female dupont cables, only need 3 per link. i bought extras plus male to female for custom long cables. i used these and electrical tape:
i know they say it can’t fry your modules, but since my ansible just died (thanks for the replacement, brian!), i am now extra careful. i was dealing with faulty power or the i2c rats nest that was with the teletype, ansible, just friends, er301, and w/ all wired up in a 3u skiff.
For anyone else who might have been waiting for the back order items to fill at sparkfun, I found them at Karlsson Robotics as well: Ribbon Cable & Ribbon Crimp Connector.
just seeing you tagged me in a subsequent post after searching to see if this very question had been answered – reconfiguring my case and the standard 2x3 cable is too short for the distance I need b/w TT and JF. I was going to use the 1x3 I got from @bpcmusic a few months ago – this is a-ok, yeah?
to make an i2c bus, just make sure all the GND are touching, all the SDA, all the SCL. it doesn’t matter what kind of cable you use, how many contacts.
we used 2x3 cables because they’re easy to make. 1x3 cables are more ergonomic. hand-wired single cables are totally fine.
Hi guys, late to the party, got Mannequins W/ today and realized I haven’t bought an i2c cables along. Sadly the i2c socket from W/ is ‘just fit’, sides got blocked by two sandwiched PCBs so a normal 5 x 2 pins bus cable is not appropriate.
What I need is a daisy chained cable for connecting TT with JF and W/, do you guys know where can find one? Thanks!
