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Hi everyone. I've searched in vain for a clear answer to what 16 MHx crystal part number is recommended and what load is assumed on Teensy 3.2, which I need to know to order some crystals. The markings on a Teensy 3.2 I have at hand don't help in a search: 6360 T 5407. The last four I guess are...

Hi everyone, we have started on a version of Teensy 3.2 which will use this longer footprint: https://oshpark.com/shared_projects/HGzzmZbK - a DIP48 that accepts the Teensy 3.2 module side pins and optional SMT pads. Soldering this up with a T 3.2 requires a jig and hand work and ends up making...

Hi everyone and thank you for all the inquiries. I have been out in the wilderness of Idaho and buried with other work, often traveling for that, and so I am behind in responding to everyone. We still have about 200 left today but those may be gone to earlier inquirers. I'm posting this here...

Thanks Paul!

We have been manufacturing a commercial vivarium using Teensy 3.2 modules for several years, with around 2000 systems installed nationwide. Recently I stocked up on the modules. Now our customer is waffling on orders... so we have about 400 modules in the original unmolested bags of 25 available...

Try bumping SPI clock down to 10 MHz. I seem to recall that the SPI clock was set higher than the data sheet for many displays would support. But that memory may not be reliable. We made a buffered/differential display interface design specifically for a manufacturing test fixture where the...

I'm emailing you.

shielding materials Copper will make an electrostatic shield at all frequencies and a magnetic shield at higher frequencies. For an electromagnetic shield at lower frequencies you need a different metal, something ferrous. For a wide range of frequencies a common shielding material is Mu Metal...

This looks really interesting. I have some desires to make a vocoder for voice input, and also pitch shifting sounds of bats and other animals that have content well above even good human hearing. Thanks for posting! I'm forking your GitHub now.

Thanks! - hadn't heard of it. I used PageMaker back in the day for data sheets and haven't found a replacement. I'm installing it now.

Thanks, guys! I tried searching "pinout generator" and got https://forum.kicad.info/t/generate-pinout-refrence-from-kicad-design/29069 including a link to this Python tool https://github.com/stevenj/GenPinoutSVG which hasn't been updated in four years. Thinking about it more since there are so...

@defragster like the Teensy pinout cards https://www.pjrc.com/teensy/card11a_rev3_web.png I'm now noticing there are appearance differences at different companies e.g. Sparkfun and Adafruit so apparently they are all doing it a little differently.

Phantom problems are a PITA These kinds of intermittent problems are maddening, are they not? I've been in the same boat more than once over the years. Agreed - until you can isolate and reproduce the problem it could rear its head and bite you later. Others here have made great suggestions...

OK here's a silly question. I have googled around and don't see a simple tool to do this. Lots of complex approaches. What's a simple (if possible) way to do this? I have the need to compare several similar parts' footprint in one diagram and I'm hoping there's a way to make such a drawing...

Hi everyone, I'm wanting to start a mastodon account and wondering which server to pick for technical topics such as Teensy. Some basic searching at mastodon didn't get me far. In the end I started an account at techhub.social as @bboyes. There is some mention of Teensy there. Mastodon is a very...

That's a beautiful display on the little touchscreen!

At your local Kinkos or equivalent.

Link to LCM300 PMBus library Here is the code we wrote and which is heavily tested and in use in multiple field installations: GitHub Systronix LCM300 library with the usual disclaimers that it might not work for your needs etc. We have some extensive error tracking and logging and there are...

FW loader using Raspberry Pi and Python? Also I am interested again. We have a commercial product using T3.2 and in the manufacturing process need to load test code. A great solution would be a Raspberry Pi which could load the code automatically and blink some lights or have a small...

We have a library to talk PMBus to an Artesyn LCM300 supply. It works well. I'm on the road for a few days but will see if I can post a link to that here. You should monitor the slave response... Is there an ACK to your request? Check all the possible exceptions. I2c_t3 is awesome for that. We...

Interested in this. But that link now goes to "Sex Snap Hookup". Here is a capture of the original from the Wayback Machine: https://web.archive.org/web/20190317071524/http://hertaville.com/stm32f0-gpio-tutorial-part-1.html

https://forum.pjrc.com/threads/57112-Teensy-4-0-Release?p=211706&viewfull=1#post211706 That's helpful too. https://docs.google.com/spreadsheets/d/1LSi0c17iqtvpKuNSYksMG306_FpWdJcniSRR6aGNNYQ/edit?usp=sharing That spreadsheet is helpful, thanks. Row 112, cell BX, "other" pins area shows no...

Also T 3.2/5/6 have RESET available but not on T4.

We designed Teensy 3.2 into a commercial product sold nationwide by our customer. This product is doing well - over 1000 are in the field and customers like it. It has an anticipated life of 10 years more or less, typical for so-called embedded systems. In the design we considered part lifetime...

On his github, you can see the sch in a file "board.pdf", and SJ1 shorts Vusb to Vin. SJ2 connects Vusb to Vin but through D1 with its anode at Vusb so that Vusb can power Vin but not the other way round. For our purposes we don't do anything to the jumpers and cuts on the Teensy 3.2, nor do we...

Teensy 3.2 isn't the new kid on the block but for many projects it is a good value. We started a large (for us) project before Teensy 3.5 was ready for prime time. We needed access to the bottom Teensy 3.2 pads, so we wanted to convert to to a DIP form factor. I promised this forum an update on...

ILI9488 SPI clock speed limits Am I missing something? According to the ILI9488 data sheet, V001, unlocked PDF copy, page 328, the min 4-line SPI SPI clock cycle period is 50 nsec for writes and 150 nsec for reads. That makes SPI clock a max of 20 MHz for Writes (Twc in the datasheet) and 6.67...

restore - and debug? That sounds like a great idea - makes it almost foolproof. Read the recent thoughts on hardware debug - that would be super if possible. In the bad old days we took such ability for granted, but more recently I have almost forgotten what it would be like. What is the...

Cleaning out things I bought and will never get around to using... such as this Teensy 3.X kit from embeddeccoolness: http://embeddedcoolness.com/shop/rfx-teensy3-x-nrf24l01-carrier-board-w-prototyping-area-kit/ I have two of them never assembled, with instructions printed out, so you can...

Yes we have been using the ILI9341_t3, forked with some tweaks: https://github.com/systronix/ILI9341_t3 I need to try the SPIN version and also resolve the changes we made... may get around to that some day...

Sorry to be a little OT but what is the part number: ILI93488 or ILI9388? I couldn't google data sheets for either. We are using the ILI9341 displays from BuyDisplay but their quality has been spotty - some whole displays just fade away after about a year. We are not using a lot of them; mostly...

Windows 10 in this case and Linux (Ubuntu 18.04) also. Right now my travel machine is a Windows Thinkpad so that's what I was using. Well, it works on A 1.8.8 and TD 1.45 so maybe something with older versions? Not sure why that would matter. I need to understand the build process and see some...

Weathershield compiles with Ard 1.8.8 and TD 1.45 Thanks for the quick response. Yeah you also need a library for each sensor on the board (links further down on the page at GH, but you will want our modified version to use i2c_t3). So it's a bit of an ordeal. I'm in midst of making mods to...

Hi everyone, had my head down for several months getting a commercial control system using Teensy 3.2 into production and shipping across the US. There are now almost 1000 installations and users love it! So that is good news: happy customers. We are also managing production and right now...

one solution: library management with Git This is why we always fork libraries critical to our project and then 'git clone' those forks into local working repos which are used to build our project. Then we are not at the mercy of updates which could unexpectedly change operation in a way that...

Agreed, for an embedded system. We design and have systems working around the world for years unattended. That's what embedded control does. But in this case a Windows PC is assumed by vendors (Dataq, Digilent, PicoScope) to be the controlling and logging device. I've set up a test system and...

Very interesting, thanks for this thread OK that snip is out of context, we can talk off-forum about your board etc. This is very interesting. I am interested in the board you developed; would need to know more before deciding if it would work in this application or not. I just sent you a...

Very interesting. I will follow up in the other thread which shows this DAQ system.

Perfect thanks! I will order some right now.

Thanks! That's all? Direct DP and DM through 33 ohm resistors to a host connector? Is anyone here using any more protection to the slave device connection? From schematics I can see there isn't any other than the 33 ohm series resistors to the Teensy slave USB pins. I'm a USB neophyte.

Hi everyone, it's been a while since I have posted. So that you understand the issues, here is some background on this need. I have a need to do long-term (maybe months) unattended triggered data logging, with access to mains power but no Ethernet or WiFi (cellular modem is possible but not so...

Generic open library for I2C Multiplexer PCA9548 FYI we have written a generic PCA9548 (and same part from other vendors such as TI) I2C MUX library which assumes i2c_t3. It's being used in a commercial system deployed across the US so it is extensively tested. The repo includes several tests...

ILI9341 touch test program with or without Ethernet also on the SPI net Jim, there's a good demo here: https://github.com/systronix/W5500_Test and look for ILI9341_Test. It draws a screen with stats about the x,y,z values of your touch. Useful for a thorough test of the touchscreen and...

Teensy 3.2 Breakout Board R4 Update: we just ordered 9 boards from OSH Park. If they test out and look OK we will publish the design files and make a pull request to HWGuy. BTW the files imported nicely into Altium 16. Here are the changes we made: All the Teensy pins except Vin and ground...

Great, thanks! Will update as promised once we have a revised board which passes OSH Park scrutiny too.

Anyone know who CPT is on OSH Park? T3.2 BB R3 needs tweaking. Don't order it! I'll try to find out from OSH Park but there may be privacy concerns. CPT designed the very useful Teensy 3.2 breakout board R3 (thank you CPT whoever you are) and we have just discovered a design flaw which can...

Use wires: SPI can travel 10 feet if done carefully You can get 10 ft with wires. We have done this with the small ILI9341 touchscreen and a custom board. Our Teensy is on a control board which is in an awkward place in a metal box and we needed to plug a display in and have a cable of at least...

12+ bit resolution in the challenging so-called "real world" To get even 12 bit real-world performance with a 2.5V input range, that is about 600 uV per count. I'm just using those values as examples. With 1.2V ref its 300 uV per count. To achieve that is non-trivial in my limited experience...

OK thanks... I understand. Yes I have forked i2c_t3 in order to add a couple of important features... I did issue a pull request a while ago. For now I need to use the fork. We turn on auto recovery and log when it gets used, is part of the reason. Anyway... the program pulls in multiple custom...

@SharpEars: "I noticed immediately that it is only characterized for safe operation to a maximum pulse width of 10 ms." Actually, no. Not sure where you got this information. The Infineon IRFP150MPbF data sheet shows rated for an absolute max continuous drain current of 30 amps at 100 deg C...