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Interesting. I didn't think of that, using that location to solder on a preloaded flash chip maybe to hijack code internally. I was thinking of using it for persistent LED effects patterns or whatever I come up with as a pattern/script file in a LittleFS. I have a large 12" diameter aluminum...

One last thing if I may, for my next (2nd) bench Teensy 4.1 ... where can I find the Winbond flash memory chip to expand that should I be OK with 8mb of PSRAM and expanded flash? Not sure why I would ever need that, but it would be nice to have those two configurations on my bench should the...

Thanks for the link thebigg and the info Paul, I appreciate it. That image has to be the same as the PJRC site. Dust or whatever markings on one of the pins matches. Honestly, if you sell something on Amazon, how hard is it to take an actual picture of the actual product before posting it? I...

Hi All, I already have a couple Teensy 4.1's but wanted a super-sized one as a developer base unit for my bench. I found one on Amazon that includes an ethernet kit and 2 PSRAM chips - ips6404lsq 1806x8gn that supposedly add 16mb of PSRAM to the board. I would prefer octal, and these are quad...

Oh I know. I write VB.NET and other languages in VS2022 and I still keep a 2019 version around just in case. I WILL give it a try for sure. And if I am not mistaken, you do the perpetual license for I think $65 or close to that, it's for life of the software. If you do not mind me asking... does...

Thanks! That's great to hear! What device/debugger do you use for this board? Or is it all capable through USB? Oops, spoke too soon and I see that debugging is not possible 'out-of-the-box' but that people have mods that have worked and posted that here. I have a number of debuggers and serial...

I do not mind the learning curve at all. But until I retire, I have a large chunk of my week consumed by working. So I just did not want to go chasing my tail again if there was no hope at the end of the dance. For example, with the ESP32-S3-DevKitC-1 N32R8V WROOM2, everything was moving along...

I have to look at them again, because I do not remember a card reader on the board, but I do remember the 4.1 version. Sure enough, there is one WOW! I bought these both in 2022 back when they were a bit cheaper at $27 US. I never opened the packages though. Thanks for the heads up! Had I...

Hi All, I've been away for a very long time. I first posted here in 2013 concerning the Teensy 3.0. I have a few Teensy 4.1 boards now, and after working with the Pico (and the W, 2, 2w) and the ESP32-S3 N32R8 WROOM 2, I have had some success with my current project. But after hitting yet...

Yes I am interested and thank you texane. Awesome!

Greets all!! I am a little slow on some things and it took awhile for me to have a light bulb blow up over my head. On a project I am working on, my Teensy 3.1 is the nerve-center of most of the hardware control. The display and input are handled by a Arduino Pro Mini 328 5v, but the rest is...

Not to hijack the thread here, which is a little old and I do have a question... jimmayhugh... your code is brilliant! It works great for me too! And I can initiate a reset from remote (from my RPi) by sending a command that when the Teensy interprets it, it does a nointerrupts() and then goes...

I know, I feel dirty doing it this way, but my C++ is rusty and I really want to get at least a rough beta working for my Seed Bed Environmental Control project. I will revise, and do it right eventually. Then I won't have nasty issues like the one I posted here.

I found the cause. It was OneWire.h I globally declared two bool variables. I moved my temp sensor code out of the isr and replaced it with those bool variables, setting them to true. When I see them true in the main loop, I do the temp sensor work from there. I see no noticeable difference in...

I rewrote the code so communications_isr is called from the main loop. I also commented out the intervalTimer code for that isr. The variable changing remains the same unfortunately. I did have another thing happen though, probably better for another post. I have a two constant string...

OK, I suppose I can rewrite that to where this happens in the main loop without interrupt support. I revisited the page on using intervalTimer and as a result, I placed noInterrupts() and interrupts() around the code in that function, but the problem still persisted. Thank you for the...

This is my first larger program. My prior program, the LED one that controlled WS2812's was on the same teensy 3.1. The only thing I can think of now is what you suggested. I placed Serial1.println(armed); at various places in my code. It is zero '0' up until I process my received serial...

I'm going to solder the pins on one of my new teensy 3.1's and see if the issue duplicates. I need to do that anyway. The code I posted above works as expected when I enter '6' and press ENTER in my remote terminal. That outputs the status, and in that part of the code, you will see the if()...

My apologies sir. I was typing what I did and it was a typo. The code I am having the issues with does indeed have '=='. More on this... instead of changing 'armed' to 'system_armed', I decided to leave the variable name the same length, and changed the d to a 1, as in 'arme1'. Just doing that...

Hi Everybody, Sorry for the long-winded post. I wanted to include all the details because I need to know if there is an explanation for all of this. I am not a C or C++ guru or I would probably be able to answer this, but I am seeing some strange behavior and it is shaking my confidence in the...

What you replied with is a little beyond me. I apologize for my ignorance. I was looking for how I can include the ctype library without throwing an error. I guess I need to read up on using the libraries that are spread out in the install.

I had a second thought, since a file search turned up so many ctype.h files on my windows machine. Is there anything I need to change to use this library? Should I build a library myself?

I want to use the <cctype> (ctype.h) library and including it didn't work. I tried to add it but nothing happens after I select ctype.h. I finally located it in several places, even in the include folder of my arduino folder in my documents. What am I missing here? Is it possible to use this...

Well, I confirmed that calling leds.show() from an IntervalTimer function doesn't work, but doing it outside the function works just fine. After reading more about IntervalTimers, and the Metro library, I decided to give a non-interrupt solution a try. I want the LED effects to be precise, not...

I have three interval timers going. One for serial communications, one that flashes the on-board LED, and one that is for led strip effects. All is good except I added OctoWS2811 support for my WS2812 LEDs and now it hangs. I wanted to flash one LED on the strip when I handle the on-board LED as...

Thank you Paul. That is a very useful tool and I like that you implemented file saving for posting from it to help diagnose an issue. I don't need to thankfully as it is working great! A couple of things I thought you would like to know however. With two sketches open, and one is teensy 3.1...

Oh no! I was switching back and forth, with two arduino IDE's open (separate sketches anyway), and everything was working great, then something went wrong. Now I get download error in red on my teensy loader when accessing the 3.1. I think it is hosed! =(( I unplugged the usb, closed everything...

OK Paul Thank you! I'm anxious to see the fruits of your labor in 2014. =) And if I get my Super Spectacular Christmas Wreath completed in time, I'll post a youtube and blog link in here. After all, the WS2812 is what led me to your Teensy in the first place.

I'm sorry Paul, but I didn't see anything that says the teensy loader supports the 3.1. I'm sure it does, but I do not want to hose my new 3.1. Can you confirm?

I did as you said and all is good, except that the non-overclock speed is still 48 MHz. Shouldn't it be 72 MHz for the 3.1? And now I am wondering if I can run two IDE's and plug two Teensy's in at the same time. Reason? I am using my replaced 3.0 to send looped serial commands to my main...

Thank you Paul. Should I uninstall my Arduino IDE and reinstall before running this? Or can I just run it on my already modified Teensy 3.0 teensyduino Arduino IDE. Thank you for all your hard work and excellent hardware!!

Yes it is Paul. I went fishing there too, mostly because I was a little miffed that they didn't mention or support (with examples) the Teensy as a possible controller for this display. And they SELL Teensy's. When a chap there said he was forwarding what I posted to you, I clarified that I...

Wow, thank you! I just reduced the quote to save space here, but I thank you for ALL of your reply!

Hi Dean, I am curious about how you got the OLED display to work with the T3. I wanted to use nick gammons hardware spi library but I noticed includes in there of files I do not have. Wire.h for one, and the reference to an avr library "#include <avr/pgmspace.h>". The T3 is an ARM processor so...

Ouch. Out of the box on github, the adafruit example includes a supposedly packaged library that is misnamed, and also references 'wire.h' that isn't included. I also cannot find that library in my arduino install. Looks like I have some work to do. I guess I could just start from scratch and...

I thought I would post for clarification before I blow anything up on my bread board. :mad: I have a teensy 3.0 and want to connect it to an Adafruit OLED 128x32 and I am stuck on pin designations. I looked at a diagram for the teensy 3.0, and another for an Arduino Uno, and picked a connection...