#1

I did up a wee variation of the TT busboard…

It’s a compact powered i2c busboard suitable for use with Teletype, Trilogy and other i2c modules. Same voltage regulator and 2.2K pull-up resistors as the Teletype Busboard.

This one is meant to just float freely in the back of your rack (or stuck down with velcro maybe) - rather than directly attached to a module.

(I’ve also got a 1U tile version in the works - I’ll update here when that’s ready)

There’s three 2x3 headers so you could connect up to 6 modules with regular (1x3) i2c jumpers or use a “flying bus” cable to connect multiple modules in series.

I’m hoping this is useful for folks with only non-powered i2c modules (Ansible, Trilogy, JF, etc.)

I have a few built ones and pcbs for sale right now (pm for a link) or you can make your own (Github).

IMG_1550
IMG_1550.JPG2772×2772 2.68 MB

See also: A user's guide to i2c

8 Likes
A user's guide to the wonderful world of teletype ⌨
Telex: Teletype expanders
#2

would this work for connecting an ansible with @scanner_darkly’s poly earthsea to JF? still wrapping my head around the i2c limitations.

#3

yep, i have a prototype and tested it with polyes and can confirm it will work for this use case.

2 Likes
#4

Any possibility these will be available in your store again?

#5

just got asked about this and need to make a few. will try to get on that in the next few days.

#6

i’m about to build one of these to connect to my ansible to pass i2c to the er-301 and just friends via orcas multipass. how are you mounting this in your case?

#7

Some Velcro or something to stick it to an inside surface of your case?

#8

ya i was thinking something along those lines.
tuck tape is incredibly durable and sticky, i’ll try using that on all four side and see how that goes.
thanks

#9

That would be awesome!