#1276

here is a shot from the guide of @scanner_darkly’s super-clean module jumpering:

125 Likes, 8 Comments - scanner darkly (@scanner_darkly_) on Instagram: “what’s i2c and how is it used within #monome ecosystem? what can you do with it? how do you set it…”

Look to the far right at the batch of TXo. That’s what I’m talking about! :slight_smile:

11 Likes
#1277

I started dissecting my rig
And I noticed I also have the slashes board hooked up to the back of my w/s
Is that ok?

#1278

Should be just fine! Slashes conveniently shares both power and I2C between your W/'s.

1 Like
#1279

Which pins is what exactly (on TXb)? Hope it hasnt been asked before, couldnt find it.

image
F23BB176-BE37-4158-BAA1-6C808413C571.jpeg3024×4032 1.37 MB

#1280

I’m unable to find a reference to point you towards, but it is, from left to right as in your photo, SDA–SCL–GND (so GND has the whiteish stripe)

1 Like
#1281

Funny how one can leave the most obviously helpful things off the silkscreen and out of the documentation. Sigh. :wink:

The white stripe is ground (thx for answering @alanza). Pin order is answered above (click on the icon to expand - the link to jump):

Sorry.

2 Likes
#1282

I am up and fully running
Thank you very much
Everyone

1 Like
#1284

Not a Teletype user, but TXb, 16n and ER-301.

I was thinking - is it possible to hook TELEXi up with ER-301, when 16n is I2C master?

#1285

I don’t think so: it’s the leader’s job to query followers for data and respond to it, so you would need 16n to be acting as a go-between between ER-301 and the TXI. 16n is certainly not programmed to fill that role.

1 Like
#1286

I have just finished a third build of Telexo +. I never encountered issues with the previous ones but on this one, the TR A does not work. The LED and the trigger are independent so I can visualize the TO.TR.P command but the voltage of this output remains at 0V.

I already tested the connection from the Teensy GPIO to the jack, everything seems correct. Do you think that a faulty IC105 ( SN74AHCT1G125DBVR) might be the cause ? Or could it be something else ?

(Unfortunately, I don’t have any spare SN74AHCT1G125DBVR that’s why I ask before placing an order…)

Thanks.

#1287

I’ve never had a problem with that part in all the TXo that I’ve built. I think it is more likely that you have one of the following issues:

  • Are you sure the signal is getting off the teensy? I’ve had some issues where the precision header pins are being difficult and require a reflow and possibly even some angular pressure in order to ensure 100% contact. Usually a reflow fixes this - but sometimes a slight pin-bend is required.

  • Have you validated continuity across the board interconnects? Maybe you missed soldering a pin (or under soldered it)? Try a reflow if you are unsure.

  • Is your jack pressed right up against the board? In this case, you may have shorted it out to ground (there are ground pins underneath it). I mount mine with a small air gap between the board and the jack while also ensuring that the pins underneath are flush. You can also use an insulator if you want (like a small piece of electrical tape over the pins).

Hopefully this helps. :slight_smile:

b

1 Like
#1288

Thanks for your reply Brendon. Really helpful indeed. Yes, I tested the continuity from the Teensy board to the jack and it seems to be correct despite the low-cost headers I used, I need to check that once again. They’re really not as reliable as the low-profile machined pin headers you use, so I don’t trust them 100% and if you mention you had issues with yours… :-/ I also reflowed many connections following the schematics on Eagle. Worst case scenario: I could try to wire the Teensy pin directly to IC105 (?)

Hmm, that’s interesting… yes it’s pressed against the board, I should test that, too ! That might be the cause of the issue…

Thanks again for your advices :wink:

1 Like
#1289

Ah damn, I slept on these while waiting for delivery of my O|D modules but now that they’re just about here (and I bought a Teletype) I really want a set of the expanders for it.

PCB+Panel sets are fine for me, I’ll look into what kind of order quantities I’d need to just get a set manufactured. Thank you so much for this great set of modules! I’m starting to think I need to look into the Nearness module a lot more :slight_smile:

1 Like
#1290

I’ll be putting more PCB and Panel sets in my store when I restock the TXb. Should be a handful of weeks while I finish up building some more. :slight_smile:

10 Likes
#1291

Anyone Build a rig like this? Looks like it would fit perfectly in a 4ms POD26, just squeaks in the depth limit at 36mm
teletype

4 Likes
#1292

I was wondering the same. Hadn’t thought about the depth though

#1293

seems like an ace little pod. I just measured the txi though as I was just rearranging something, and it has 4mm from connector end to the outer front panel I’m afraid. I guess one could optimize the depth of the expander by replacing (or ditching entirely?) the pin headers, I believe I already read something along those lines.

2 Likes
#1294

I’ve seen folks go as far as cut a little slot out of the bottom of the pod to make space for the header, which I’d guess doesn’t reach as low as the pod’s feet. I’m starting to second guess myself here, now that I’m thinking about it I’d miss all the teletype features with my JF. Maybe one of the 40/48x would be better. I love my teletype, but it keeps rotating out of my travel case. I think it deserves it’s own little skiff.

#1295

This is absolutely amazing news!!! I’ll be getting a couple of sets for the TXi when they become available! Will the PCB take 0804 or does it have to be 0603?

Oh, and will people that (like me) expressed interest get an notification email (forgot if I provided an email)?

#1296

if you express interest on the site, the thing automagically lets you know when the store is restocked. also, i’ll post a little notice here in advance.

most parts are 0603, btw. packed in there in the power section.

you can check out the deets at the github: https://github.com/bpcmusic/telex/tree/master/hardware/TELEXi/board/images

1 Like