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  1. 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...
  2. 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...
  3. 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?
  4. 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...
  5. 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...
  7. 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...
  8. 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...
  9. 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...
  10. 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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    Yes, that is the plan. Of course it needs...

    Yes, that is the plan. Of course it needs testing and characterization. I will post back when we have some results. And the unkit just needs the magjack and the header connection for the Teensy...
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    Thank you - email sent. There is just one...

    Thank you - email sent.

    There is just one left but I ordered another batch which should be here next week.
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    After looking at this a lot more, I've decided to...

    After looking at this a lot more, I've decided to put the max step rate specification at 160 kHz. Quite a bit better than the old 8 bit GRBL of 30 kHz. It can go higher but I don't feel confident of...
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    A divider will work and is pretty traditional. ...

    A divider will work and is pretty traditional. Certainly cheap but watch out for impedance requirements. And watch out for the actual voltage in - make sure your divided V out is still < 3.3V.
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    Actually, his point was important. The OP wanted...

    Actually, his point was important. The OP wanted to know if the T4.1 was 5V tolerant. The answer is no. Sometimes we get caught up in the details and don't directly address the question. I don't...
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    There was a question about max step rate...

    There was a question about max step rate supported. After some testing, I have been able to produce a 180kHz step pulse stream. Minimum pulse width is 3 uS. You can get to 300 kHz but that probably...
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    Excellent - have you tested out the USB...

    Excellent - have you tested out the USB connection yet?
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    I don't know what effect that will have - ...

    I don't know what effect that will have - raising CNV causes Busy to get raised by the LTC2335. But, I would probably use a timer to "schedule" conversions. Then use a falling busy to know when to...
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    Definitely don't tie CNV to the the clock. There...

    Definitely don't tie CNV to the the clock. There is a conversion delay - Busy is raised during that period and when it drops you start clocking. Probably just use a separate digital pin for CNV to...
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    The User Guide is now available here...

    The User Guide is now available here
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    Thanks. Kind of you to say. I take some pride in...

    Thanks. Kind of you to say. I take some pride in making my PCBs look good - clean layout, 45 degree bends, clear and helpful silk screen legends. That's make them work any better, though...
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    It will. That's the next step. I've tested the...

    It will. That's the next step. I've tested the hardware and it runs T4.1 Ethernet apps, both Native and lwip. grblHAL works with lwip on other processors. we are porting it to the T4.1 right now...
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    Mach 3 isn't needed. grblHAL takes it place and...

    Mach 3 isn't needed. grblHAL takes it place and is free. And, better. This uses a PC mainly for feeding G-Code. grblHAL running on the T4.1 does all the motion control, planning and manages the...
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    I've tested it against steppers. An earlier...

    I've tested it against steppers. An earlier version is running several machines and grblHAL is running quite a few machines with various processors (STM32, ESP and others). I'll be doing a "pretty...
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    Teensy 4.1 Based CNC Controller

    I have finished my grblHAL CNC Motion Controller board for Teensy 4.1.

    Completed board
    20816

    Unkit Version
    20817
    Features:

    5 Axis control outputs – 5V compatible.
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    Using the 3.3V of the LC is fine though you won't...

    Using the 3.3V of the LC is fine though you won't get super accurate results. Using a VRef would be better. Not sure you need the accuracy though.
  29. That looks like a very good deal. I expect a lot...

    That looks like a very good deal. I expect a lot of people will get one.

    I have a question about the MagJack in the kit. It is a different part number from the one specified in the OSHPark...
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    Why don't you ask the developer, Terje? He is...

    Why don't you ask the developer, Terje? He is quite responsive and helpful. Post your question in the issues section of the github repository. You can also read the code. He's done a great job of...
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    You can do multiple ground planes. One for...

    You can do multiple ground planes. One for digital, one (or more) for analog. Sometimes one for the power supply. Then connect them together in one spot via a star.
  32. Here's the schematic from my CNC Breakout board. ...

    Here's the schematic from my CNC Breakout board. The 6 pin header on the left is on the T4.1. The magjack pinout is from the datasheet.

    20681
  33. https://forum.pjrc.com/threads/60857-T4-1-Ethernet...

    https://forum.pjrc.com/threads/60857-T4-1-Ethernet-Library
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    Let me know how it goes. I'm interested in any...

    Let me know how it goes. I'm interested in any feedback or suggestions.
  35. Yes, put a ferrule on every wire that will go...

    Yes, put a ferrule on every wire that will go into a screw terminal. Especially the ones for line voltage or high current.

    If you have to join 2 wires, there are ferrules for that.
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    I would go by what's on the pjrc site...

    I would go by what's on the pjrc site. It's what I've been using for my designs.
  37. I have a different solution for mixing the 2mm...

    I have a different solution for mixing the 2mm and 2.54mm pitch sockets but I'm not happy with it. So, I thought I'd give your approach a try. Then I saw the prices! Wow, hard to justify putting...
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    Not really any trouble. Here it is....

    Not really any trouble. Here it is. https://oshpark.com/shared_projects/jfk7KJcO
    Same BOM and schematic as this one

    Cavaet, I haven't tested this one but expect it will work the same as the...
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    Sorry, my internet connection died yesterday...

    Sorry, my internet connection died yesterday afternoon and just got it back.

    Mounting holes are worthwhile though it requires a wider board and the MagJack presents an issue for screw head...
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    OK, Here's the OSHPark link...

    OK, Here's the OSHPark link https://oshpark.com/shared_projects/5LjFDf2O
    Ugly BOM included in the link (I can't get their version of markdown to work for me).

    Slightly prettier BOM here:
    ...
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    Some good ideas there. For now though, I think I...

    Some good ideas there. For now though, I think I will just finish this one up. Will consider a base board approach for later. The problem with a base board is that it screams for lots of features!...
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    Sharp eye! Yes, I've fixed it in the next rev...

    Sharp eye! Yes, I've fixed it in the next rev which I showed in the original post.
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    A TH version would be pretty simple. Will...

    A TH version would be pretty simple. Will consider it. Though, to be honest, 805 caps and resistors are pretty easy to solder with a pair of tweezers to hold them. Personally, I find TH actually 2X...
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    Thanks. I went and got USBHost_t36 off github...

    Thanks. I went and got USBHost_t36 off github and installed it. Had trouble compiling the simple test program (examples/test/test.ino) because of undefined references (attachRawPress and...
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    T4.1 ETH+USB combo breakout testing

    I've designed a breakout board for a combo ethernet and USB A jack. It seems to work fine for ethernet but I'm scratching my head about the easiest way to test the USB host capability. I've been...
  46. Hmmm, have you looked at this thread?...

    Hmmm, have you looked at this thread? https://forum.pjrc.com/threads/47002-Conflict-with-Teensy-3-X-and-HX711-Libary-I-think-related-to-ShiftIn-function?highlight=HX711
  47. Thread: Teensy Backpacks

    by PhilB
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    Had not seen this before. However, I'm getting...

    Had not seen this before. However, I'm getting 404s on all the links. bolderflight web site is working just none of the teensy links that point to it.
  48. This actually depends on the logic family. ...

    This actually depends on the logic family. Consider the difference between HC and HCT (or AHC and AHCT). The non-T version has a minimum Input High (Iih on the datasheet) of around 3.85V (with a...
  49. No prob. Interesting approach. The only thing I...

    No prob. Interesting approach. The only thing I wonder about are the PCB pins. I presume you will solder the sockets into the base board, insert the pins, slip the teensy on over the pins and solder...
  50. Yeah, shipping cost is par for the course. I...

    Yeah, shipping cost is par for the course. I keep a running list of parts I will be needing so I can avoid the $8.50 for a $0.50 part problem. Mouser used to have a USPS first class option for...
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