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  1. Teensy 4.1: Taking a snapshot from an IP camera

    Is it possible for a Teensy 4.1 to take Snapshot image from an IP camera?

    In my application, I am not interested in streaming live video, rather I only want to take single snapshots. The...
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    True, there can be large variations due to...

    True, there can be large variations due to day/night and thunderstorms.

    The application is in an urban environment. Summer thunderstorms do lead to a rapid reduction in temperature of about 15C...
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    Thank you MarkT. Yes, you are correct that...

    Thank you MarkT.

    Yes, you are correct that they come with an adhesive. Reviews though indicate that cheap adhesives tend to lose their grip over time. Also, my Teensy is not flat, it is placed...
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    Thank you MarkT. Yes, I meant Fahrenheit and...

    Thank you MarkT.

    Yes, I meant Fahrenheit and should have appended the measurement unit to the title.

    I am less concerned about thermal cycling because the application runs 24/7 and the...
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    Yes, you make good points. It may have to be a...

    Yes, you make good points. It may have to be a combination of an enclosure fan, and a processor heatsink.
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    Any recommendations for a heatsink for the Teensy...

    Any recommendations for a heatsink for the Teensy 4.1?

    How does one attach it to the micro? I am wary of double sided tape because my teensy in placed vertically where, with time, the heat sink...
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    I agree, a plastic enclosure is better but it is...

    I agree, a plastic enclosure is better but it is what was called for so I have no control.

    I will change the frequency and maybe also add a heat sink. Any recommendations for a specific heat...
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    The T_4.1 is the primary hear source. There are...

    The T_4.1 is the primary hear source. There are a couple of other sensors but their impact should be very small.

    I can try to lower the frequency to 528 and evaluate its impact and will read into...
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    Teensy 4.1: CPU Temperature 167 degrees

    I have a Teensy 4.1 that is placed in a metallic enclosure outdoors.

    As expected, during daytime, the Teensy's 4.1 temperature (as measured by the temperature library) is quite high but I did not...
  10. Thank you very much for your usual prompt help. ...

    Thank you very much for your usual prompt help. Will try it.
  11. Cannot reach teensy 4.1 via Com Port after large memory sketch

    I have a sketch that has some large arrays. The size of those arrays is dependent on an integer variable that is specified at the beginning of the sketch..

    The sketch has been compiling and...
  12. Thanks Paul. I think I understand now what has...

    Thanks Paul.

    I think I understand now what has caused the problem. I am using a custom board which also has the Ethernet connection. To use that board, I desoldered the 2-row 6-pin connector to...
  13. When I touch the program button with a single...

    When I touch the program button with a single Voltmeter tip, the PC beeps.

    The voltage between Program pin and Ground is 3.3. When I press the program button, it goes to zero.
  14. Thank you for the Program pin location.

    Thank you for the Program pin location.
  15. When first connecting the board to the PC, the...

    When first connecting the board to the PC, the com port is found and the LED lights up.

    At that point, I measured a voltage under the button (Program Pin?) of 2.0 V. When I pressed the button,...
  16. Thanks Paul. Which pin is the Program pin?

    Thanks Paul.

    Which pin is the Program pin?
  17. Thank you Paul. I measured 4.89 at VIN, and...

    Thank you Paul.

    I measured 4.89 at VIN, and 3.28 on the 3.3V pin
  18. After spending 15 seconds nothing happens ,,,,

    After spending 15 seconds nothing happens ,,,,
  19. Thank you @defragster. I loaded and verified...

    Thank you @defragster.

    I loaded and verified the Blink app. I have also uploaded the verbose logs. Tried all the above but nothing helped.

    When I unplug the cable then replug it, the board is...
  20. Thank you, I tried but it does not help. The...

    Thank you, I tried but it does not help.

    The first time I plug the board in, LED lights up and computer recognizes it. When a sketch tries to be uploaded, nothing happens. Pressing the...
  21. Teensy 4.1 not responding to pressing button for sketch upload

    I have a brand new Teensy 4.1 that worked fine for a couple of days.

    Now, when I try to upload a program to it, nothing happens. When I press the programming button, the LED stops flashing and...
  22. Thanks to all.

    Thanks to all.
  23. What happens if a Teensy 4.1 is powered via Vin and USB ast the same time?

    Hello:

    What would happen if a Teensy 4.1 is powered both from Vin (5V) and USB?

    I have a custom board where the Teensy 4.1 is powered by 5V via its Vin pin. However, as the project is still in...
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    Thank you very much. It worked.

    Thank you very much. It worked.
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    Teensy 4.1 NTP Server Example

    I am trying to use the NTP example of the Teensy time library with a Teensy 4.1.

    I changed the libraries to:



    #include <TimeLib.h>
    #include <NativeEthernet.h>
    #include...
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    Thank you @tonton81. This is great news.

    Thank you @tonton81. This is great news.
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    Thank you @tonton81. If I understand you, this...

    Thank you @tonton81.

    If I understand you, this means that once the LCD which uses SPI starts, CAN1 stops working?
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    Teensy 4.1 - Using CTX1 and MOSI

    Hello:

    I have a Teensy 4.1 which is interfaced to a CAN controller via CRX1 and CTX1 (pins 23, 22).

    I need to use the Teensy41 with this SPI LCD...
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    Thank you very much. I appreciate it.

    Thank you very much. I appreciate it.
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    I am assuming like this? 24930

    I am assuming like this?

    24930
  31. THANK YOU. The problem was solved by following...

    THANK YOU.

    The problem was solved by following your advice and putting a 120 Ohm resistor on the sensor side between the CAN_H and _L lines.
  32. I am looking at the Teensy CAN board specs, and...

    I am looking at the Teensy CAN board specs, and it says it has: 120 Ohm termination resistors. Do I still need the 60 Ohm resistor on the Teensy board side?
  33. The sensor has an 8-pin plug. Two of the pins...

    The sensor has an 8-pin plug. Two of the pins are Can_H, Can_L and then Gnd. Those 3 contacts are wired into the Teensy board using 6-in wires.

    The board I am using is the SKpang board:
    ...
  34. Thank you. Just tried it but still, selecting...

    Thank you.

    Just tried it but still, selecting a CAN baudrate > 250 kbps leads to no data received on the Teensy4.1. Selecting 250kbps works.

    My code now reads:


    can1.begin();
    ...
  35. Thank you tonton81 for responding to my question...

    Thank you tonton81 for responding to my question and for your time and effort in making the library.

    I configured the sensor for 500 kbps then used the following code


    can1.begin();
    ...
  36. Teensy 4.1 CAN max baud rate using FlexCAN_T4

    This is my first ever project using the CAN bus. I am interfacing a CAN sensor to a Teensy 4.1 and the FlexCAN_T4 library.

    That sensor can be configured with CAN baudrates of up to 1000 kbps. In...
  37. Thank you defragster. I am using Teensyduino...

    Thank you defragster.

    I am using Teensyduino 1.53 with this library:

    https://github.com/tonton81/WDT_T4

    I am happy to try any other library but the one above seems to work well.
  38. Using a Teensy 4.1 with a remote relay (100 feet away)

    I have a Teensy 4.1 and I want to control a relay which is connected to a low voltage load.

    The relay requires a 5V signal and it is located over 100 feet away from the Teensy.

    I would...
  39. Teensy 4.1 & Teensy 4.0 : Different Behavior with the Watchdog library

    I am running the same code on a Teensy 4.0 and a Teensy 4.1. The timings on the Teensy 4.0 are below and they work flawlessly.


    ...
  40. Hi KDORC, Thank you. I am baffled as to what...

    Hi KDORC,

    Thank you. I am baffled as to what may be causing this ....
  41. I read somewhere that the SD card needs to be...

    I read somewhere that the SD card needs to be started AFTER the network.

    Could this be the problem?
  42. Teensy 4.1 with Ethernet Kit: Sometimes link light not flashing --> no ethernet

    I am using a Teensy 4.1 with the NativeEthernet library and everything is working well except that sometimes when I connect the board to power via USB, the flashing link light on the Ethernet kit...
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    Problem fixed. It was due to error in writing...

    Problem fixed. It was due to error in writing EEPROM. Library is fine.
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    Teensy 4.1: Webserver crashes on submit (using NativeEthernet library)

    I have a webserver sketch that worked fine on a Teensy 4.0, however, it is crashing on the Teensy 4.1 using the latest NativeEthernet library.

    The webserver (code attached) displays a Table and a...
  45. Thank you very much Luni, Paul and PDOS. Yes,...

    Thank you very much Luni, Paul and PDOS.

    Yes, I am using
    #define MySensorSerial Serial5.

    I have changed
    Serial5.flush() to MySensorSerial.clear() and will replace
    delayMicroseconds(1);...
  46. Thank you Paul for your detailed answer. I also...

    Thank you Paul for your detailed answer. I also learnt about how DTR and RTS work, makes sense.

    Yes, the Arduino Serial Monitor does connect.

    If at all possible, is there anyway you can take a...
  47. Thank you very much Paul. Here are all the...

    Thank you very much Paul. Here are all the answers and also my code.

    1) Windows 10
    2) Arduino 1.8.9
    3) Teensyduino 1.5.3


    Is there a way to "set" DTR or RTS lines so PC senses disconnect? ...
  48. Teensy 4.0 - PC does not reconnect after Watchdog reset

    I would appreciate the community's help with this pesky problem.

    I have a Teensy 4.0 which is connected to a serial sensor. I am not sure why yet, but the Teensy was crashing after about 30...
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    I will get access to the sensor on Monday and of...

    I will get access to the sensor on Monday and of course happy to try anything.

    I will change WriteBufferingStream to WriteBufferingClient and will update you.

    Thank you.
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    I hear you ... I got this code from the sensor...

    I hear you ...

    I got this code from the sensor vendor's website. The odd thing is that the code works PERFECTLY on a Teensy 4.0.
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