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    OK, that makes some difference. You can generate...

    OK, that makes some difference. You can generate very fast step signals though you might need to write your own code. 500 kHz is possible with some very tightly written code if you are not doing...
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    Power drops off with microstepping. Going even to...

    Power drops off with microstepping. Going even to 1:16 drops the available power. I suppose there are some applications beyond that but don't expect to move anything very heavy. 3000 rpm is way high...
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    300kHz is way fast for a stepper. What driver...

    300kHz is way fast for a stepper. What driver are you using that can go that rate? You can use any pwm pin for outputting to an external driver but a lot of the drivers show a max rate of 200 kHz.
  4. For a non-blocking solution, I would use a timer...

    For a non-blocking solution, I would use a timer to generate 58 uS and 100uS pulses. Set the timer up to generate an interrupt. In the interrupt service routine (ISR) for the timer you set the next...
  5. Without seeing how you wired it up, it's hard to...

    Without seeing how you wired it up, it's hard to tell. What did you connect to what.
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    I have a bunch of ili9341 displays and several of...

    I have a bunch of ili9341 displays and several of them have this issue. One will go white screen after 15-20 minutes of use. I think it's heat related though haven't spent enough time to track it...
  7. The T4 and T4.1 will feel warm to the touch at...

    The T4 and T4.1 will feel warm to the touch at 600 MHz. I've measured the 5 that I have and they all measure around 30C in an approximately 20C ambient room - a 10C rise is really nothing to worry...
  8. I don't think that will work the way you expect. ...

    I don't think that will work the way you expect. That SF converter is for logic, not analog signals. It does not scale the voltage level. If the output signal is truly analog and can read anywhere...
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    It looks like there is a Marlin port for the T3.5...

    It looks like there is a Marlin port for the T3.5 and T3.6. The timer code TimK linked to has ifdefs for both. The iMXRT1062 is overkill and I bet the T3.5 and T3.6 are too. I've thought about...
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    As mark said,yup. Also make sure you get the T...

    As mark said,yup. Also make sure you get the T version (74AHCT541 or 74HCT541) as the HC and AHC versions won't work with 3.3V logic.
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    The 74HCT245 (and 74AHCT245, too) is readily...

    The 74HCT245 (and 74AHCT245, too) is readily available from TI, Toshiba, ON and Nexperia.
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    If you are laying out a board or doing point to...

    If you are laying out a board or doing point to point wiring, you might want to look at the 74HCT541 (or 74AHCT541). Basically the same logic but the '541 has all the inputs on one side of the...
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    Just to be 100% sure I'm still following you,...

    Just to be 100% sure I'm still following you, you're goal is to make changes to Marlin's timer HAL code to get it to run on the iMXRT1062. Software timing relies on all the other code behaving. Even...
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    I agree, understanding the usage is important. ...

    I agree, understanding the usage is important. Looking at the Marlin timer code for the MK64FX512 and MK66FX1M0, it looks like they are defining 2 16 bit timers. So I would figure out how to set up...
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    Take a look at the iMXRT 1062 version of grblHAL ...

    Take a look at the iMXRT 1062 version of grblHAL (32-bit port of GRBL). Look in the drivers/IMXRT1062/main - all the iMXRT 1062 changes are in driver.c and driver.h.

    I suggest you use the...
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    Yes, the T3.2 can drive those step stick drivers...

    Yes, the T3.2 can drive those step stick drivers - all you need is step and dir. Just make sure you give it 3.3V on the logic supply input. Pololu has a number available and a good comparison chart....
  17. Thread: Backup Strategy?

    by PhilB
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    Sure but only if there is a reasonable plan you...

    Sure but only if there is a reasonable plan you can have. Too many people natter about things they can't plan for or things where the cost of planning/prepping is way too high. As long as we are at...
  18. Thread: Backup Strategy?

    by PhilB
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    No offense but I don't understand why people...

    No offense but I don't understand why people spend their time thinking about worst case disasters. And my happiness is not predicated on an election outcome. In fact, I'll be pretty happy no matter...
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    Yes. Github doesn't have a way to talk privately...

    Yes. Github doesn't have a way to talk privately and it is an issue if you want to send something physical to someone, for example.
  20. Thread: Backup Strategy?

    by PhilB
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    Hopefully, this is just a short term...

    Hopefully, this is just a short term embarrassment for the USA. In about 3 months we will have the start of regime change for the better. Then we will begin taking Covid seriously, treating our...
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    I keep thinking I should do a mill conversion. ...

    I keep thinking I should do a mill conversion. Maybe someday. It would sure be nice to be able mill steel.

    I see where the confusion on step rate comes from. I don't use optos for the stepper...
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    You are running a fairly high end configuration....

    You are running a fairly high end configuration. The goal of grblHAL is to be able to handle that sort of setup though I'm not sure the software is there yet.

    On your specific questions.
    1) my...
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    So, you are mapping the turns from a quadrature...

    So, you are mapping the turns from a quadrature encoder into button clicks if I understand your question. The obvious (and maybe wrong) answer is just multiply the number of pulses by 20 - if you...
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    Wish I could do something about customs and VAT...

    Wish I could do something about customs and VAT but it's kind of above my pay grade. I guess there is at least one thing about the USA to be grateful for - we have a pretty high customs minimum...
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    V2.07 is what I have available now. The only...

    V2.07 is what I have available now. The only significant electrical difference is V2.05 digital inputs are not 5V tolerant, V2.07 are. This is called out in the manual. Also, the 2 LED resistor...
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    Yes, very active. Numerous ports to various...

    Yes, very active. Numerous ports to various processors (12, iirc). The developer, Terje, is using LinuxCNC as a model for the various G and M codes. Personally, I find LinuxCNC overly complex but it...
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    It's possible but it looks to me like one side of...

    It's possible but it looks to me like one side of the switch and the encoder common are connected together. At least a similar one that I have is that way.
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    We all stub our toes sometimes. The good news is...

    We all stub our toes sometimes. The good news is you got it to work other than maybe spending a little more than you absolutely had to.

    But next time you ask for help, including pictures will...
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    That's because you used encoder assemblies rather...

    That's because you used encoder assemblies rather than just the encoder. Of course you didn't show that in the first post and, indeed, it was miswired.
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    All the non-encoder switches are just in a simple...

    All the non-encoder switches are just in a simple scan matrix. The encoders aren't matrixed but the push switches on the encoders are matrixed. I suspect you have mis-wired the encoders. The 3 pin...
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    Since you are new to electronics, you have quite...

    Since you are new to electronics, you have quite a mountain to climb. Your best bet is to create a PCB that mounts pre-built modules. It would act as a carrier and provide the needed wiring. That...
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    ISO C++ is way picky about string constant to...

    ISO C++ is way picky about string constant to char * conversion. Just a warning in GCC -fpermissive.
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    If using Eagle there's a library for it here....

    If using Eagle there's a library for it here. Look for teensy.4.1.dist.zip
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    Not sure I agree that more will want it. There...

    Not sure I agree that more will want it. There are all sorts of side effects of a voltage drop. I ran into an issue where someone was using PWM to control the speed of a spindle with a teensy 4.1. ...
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    Electricity needs 2 wires to work: a + and a -. ...

    Electricity needs 2 wires to work: a + and a -. Without those, the electrons won't flow. That's why we call it a circuit. We often call minus ground or 0V. So yes, you need the ground too.

    Start...
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    It is really a good idea to have accurate...

    It is really a good idea to have accurate information when asking for help.

    That SSR is normally closed. Is that what you want?

    Your wiring is still incorrect. Everything must have a common...
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    The SSR won't work because it's specified for AC....

    The SSR won't work because it's specified for AC. It may turn on but probably won't turn off.

    Your wiring is wrong. You need a common ground for the teensy, fan, pump and power supply to start...
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    Hi, I have a library that is in my git repository...

    Hi, I have a library that is in my git repository here. Look for teensy4.1.dist.zip. I use this on several boards including one with Ethernet pictured below.
  39. Thank you. I'm trying to build lwip_websrv the...

    Thank you.

    I'm trying to build lwip_websrv the T4.1 under TD 1.53. I built it successfully under an earlier TD version (1.51, iirc) but am getting this error:

    I thought it was the hack problem...
  40. Hmmm, is it supposed to be in the readme.txt here...

    Hmmm, is it supposed to be in the readme.txt here - https://github.com/PaulStoffregen/teensy41_ethernet/tree/master/t41ether

    There is a note that says "adjust include paths for Arduino" for the...
  41. Ethernet lwip Boards.txt hack? where is it documented?

    I overwrote my boards.txt file and lost the "hack". For the life of me, I can't find the readme that describes what to do. Could some kind soul point me in the right direction?
  42. A small update (or not...). PC A has USB 3.0...

    A small update (or not...). PC A has USB 3.0 ports but I recall that the front panel ones (which I am using) are 2.0. I could have misremembered that though.

    Is USB2 vs 3 a cause of the...
  43. Teensyduino USB Serial: Power Consumption Issue

    I have designed a PCB that uses a T4.1 and communicates with an application running on a PC via Serial USB. When I plug this board into 2 different Windows 10 PCs, it draws 78 mA from one and 110 mA...
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    Compact form Teensy?

    I know that breadboard friendliness is a key feature of Teensies and one of the reasons for their popularity. It certainly makes it easy to prototype with but makes higher pin count modules difficult...
  45. I use JLCPCB's assembly service and it works...

    I use JLCPCB's assembly service and it works pretty well within some limitations but there are no magjacks (or any other connectors) in their library. So they really aren't a candidate. I've been...
  46. Yes, I think you are correct. You can do either...

    Yes, I think you are correct. You can do either - apply 3.3V to the 3.3V pin and apply V above the dropout voltage of the VReg to Vin. Both work though I only use 5V Vin on my boards which then...
  47. I'm a little confused about your situation. The...

    I'm a little confused about your situation. The above board image shows 3.3V connected to 5V on the USB connector but that is different from your question. The Teensy 4.0 and 4.1 (and I think all...
  48. Double post. not sure how that happened...

    Double post. not sure how that happened...
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    Resurrecting an old thread. Seems silly to run...

    Resurrecting an old thread. Seems silly to run the old 8-bit GRBL with all it's limitations on a 32 bit ARM. Suggest you look at - grblHAL. It's a 32 bit version of GRBL and is available on a number...
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    I think the file size numbers in the list are...

    I think the file size numbers in the list are wrong but image size in pixels is right. I have to go resize to upload photos. It does seems a bit 20th century in it's limits - even 3 generation old...
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