#1353

I was looking at the Gerbers from the Git, and couldn’t get them to appear properly without adjusting some of the file extensions. I didn’t realize Telexi and Telexo are 4 layer boards. Can anyone confirm this is correct?

42%20AM

#1354

Yep. It was a bit of a routing nightmare. :slight_smile:

Sounds tasty!! Let me see what happens when I get firmware hacking. :slight_smile:

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#1355

I’m getting some strange behavior with my TXi, and specifically with the returned range of the param knobs no matter what calibration steps I take (TI.PARAM.CALIB X Y, TI.PARAM.INIT X, TI.INIT 1 and TI.RESET 1).

When I call TI.PRM, the returned range seems extremely limited (between 6500 and 7500) no matter what the position of the knob is. The same thing happens if I map to a different range (for example, if I map the knob 1-20, the returned values are only between 8-10). Stranger still, if I leave the knob at a set position and call TI.PRM, the returned value fluctuates anywhere within the range.

Any obvious steps I may have missed? :thinking:

1 Like
#1356

That is really weird. Please make sure your boards a properly seated. On first blush, it sounds like things might be disconnected causing the values to float.

LMK what you find. We’ll certainly find a way to resolve this. :slight_smile:

For all, when calibrating on the TX modules, don’t forget to call the STORE operator when you have it set the way you like it. Without that, you will lose your calibration on power cycle.

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#1357

And…we’re back in business :smile: Indeed, when I pulled the module out, one of the boards had completely disconnected. Fastened everything with a bit of floss, and it all seems to be working great. Thanks!

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#1360

Knob skirts were bigger than I estimated, so I moved the text. And I can confirm that the fit is good! Here’s 1U TXi, as promised. If you have multiple TXi, I suggest editing the panel text to reflect their assignments :slight_smile: or making one monster panel for all of them!
TXi_1u.fpd (1.1 KB)

1 Like
Eurorack: discussion, advice, learning, questions
#1361

Hi!

So im about to order some boards from the pcb fab since they seem to be out of stock and i dont mind smd…i wanted to ask a few things:

-the txo is 2 boards (4 layers each) ? Since in the gerber folder there are two zip files.

I get confused when opening the brd file in eagle and seeing a third board (the one of the same size as the teensy) i know it says “ignore me”

-any one has a mouser cart for the expanders? (I know i can copy and paste) just wondering if someone had recently placed a mouser order and had a cart available.

Many thanks!.

#1362

I’ve had my TXi and TXo for a while now, but I hadn’t actually used the TXi much until now that I’m prepping for a show in a couple weeks. I’m trying to use the Param knobs to drive some stuff in a script, but the numbers that its returning are jumping around even when I don’t move the knob. That’s happening for knobs 1, 3, and 4, but not 2, for some reason. I don’t think that I accidentally used ti.reset, but it’s possible I did that instead of ti.init at some point.

Not sure if any of this is enough to go on. No idea what firmware I’m on, or whether that’s even relevant! :slight_smile: I haven’t actually updated the firmware on either of the expanders, just Teletype itself.

Any help would be appreciated!

#1363

I’m having the same issue with param #3 on one of my TXis. I figured it was just a bad pot so I ordered three new ones from Thonk a few days ago. I’ve done a couple of calibration routines, but it still acts the same.

#1364

I have several txo’s some txo+. How do I know if it’s an txo+? Is the fact that the teensy is 3.6 “enough”? All bought 2nd hand, not sure who build them, they all say “txo” on panel…

#1365

Yes two different « 4 layers » boards. (+ the Teensy Helper board in case you’re building a TXo+)

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#1366

Thanks a lot for the confirmation!

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#1367

And I forgot to say: don’t forget the « Teensy Helper » board only if you’re building some TXo+ (Using Teensy 3.6)

This tiny PCB has its own BOM and you need to adjust the main BOM too (The references specific for TXO+ are mentionned in the main BOM but it’s easy to make a mistake while ordering :wink: a few components are different than the one used for regular TXo

#1368

Thanks for pointing this out, i had uploaded the files to pcb way and i was going over the boms, noted!

#1369

my carts are super out-of-date. might be best to start over as the weirdness with the capacitor shortages and whole tariff mess have made substitutions necessary. just be mindful of the specs and sizes for the components. also - don’t skimp on the tolerances to save a few pennies. that will make a difference in the accuracy of your CV output (the TXo uses component accuracy to avoid trimmers).

good luck on the build. let me know if you have any questions. :slight_smile:

1 Like
#1370

Update for my previous post about TELEXi param knobs returning values that are jumping around: @bpcmusic suggested that the pins might not be making great contact in the header. So I pulled it apart, bent all the pins slightly to make sure they were actually contacting the sides of the female side, and voila… seems to be fixed! Thanks again, Brendon!

4 Likes
#1371

Any thoughts about crow expanders? 8 cv outs which can also be triggers and gates? Both 3u and 1u?

I have no idea how to make this, but would love to help if there’s anything I can do.

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#1372

Crow can speak i2c, so the TXi/o can likely already be used.

2 Likes
#1373

Yes it seems it would only need a Lua file like @ioflow did for the 301, something like to.lua with the right commands :slight_smile:

2 Likes
#1374

Seems there is already TXi support

2 Likes