Forum Rule: Always post complete source code & details to reproduce any issue!

Search:

Type: Posts; User: PaulS

Page 1 of 10 1 2 3 4

Search: Search took 0.01 seconds.

  1. Replies
    4
    Views
    172

    Did you on purpose connect SCK/T_CLK to pin 14 of...

    Did you on purpose connect SCK/T_CLK to pin 14 of the T3.2?
    The table states pin 13 [when not using the Audio adapter]:

    28426

    Paul
  2. Please, don't search for a clone... You can find...

    Please, don't search for a clone...
    You can find distributers on this page, on the rightside column.

    Paul
  3. Just measured my display...

    Just measured my display - the multimeter is reading 54mA running this sketch.
    DC current measured in the 3V3 line to the display.

    Paul
  4. What I found on the web is that the ILI9341 draws...

    What I found on the web is that the ILI9341 draws about 60mA [10mA for the display controller and 50mA for the backlight].
    That seems reasonable so I guess your multimeter is off.
    Did you set the...
  5. You better go here:...

    You better go here: https://support.logi.com/hc/en-us/search#q=z207&s=all
  6. Found a potential solution in this thread...

    Found a potential solution in this thread.
    When I uploaded this code into a Teensy 3.2 and click "Restart Port" in USB Device Tree Viewer, I see the onboard LED go off and on.
    Powering the Teensy...
  7. As far as I know, there is not...but I could be...

    As far as I know, there is not...but I could be wrong...

    Paul
  8. Yes, I agree with Bricomp's suggestion. Teensy...

    Yes, I agree with Bricomp's suggestion.
    Teensy boots very fast, so one needs to insert some waiting time for the nvidia jetson to finish it's boot procedure.

    Paul
  9. Perhaps you should comment out these 2 lines and...

    Perhaps you should comment out these 2 lines and try again:
    Serial.println(F("Hello Teensy 3.6 dual CAN Test."));
    Serial.print("CAN bus 0: "); hexDump(8, inMsg.buf);

    Paul
  10. Replies
    5
    Views
    143

    Could it be that the SDcard housing on the audio...

    Could it be that the SDcard housing on the audio adapter is shorting parts on the bottom of the Teensy 4?
    See also this thread.

    Paul
  11. Replies
    9
    Views
    169

    Better yet, I modified "byte midichans[2048]" to:...

    Better yet, I modified "byte midichans[2048]" to:

    byte midichans[2048] =...
  12. Replies
    9
    Views
    169

    Does this help? I changed [y] to [y+1]: void...

    Does this help?
    I changed [y] to [y+1]:

    void midisend(){
    for(int y = 0; y <=2047; y++) {
    if (abs(midivals[y]) != abs(newpos[y] / 4) % midiquant[y]){
    if (midiquant[y] ==...
  13. Replies
    9
    Views
    169

    Hmm, I'm confused too (but more in the sense that...

    Hmm, I'm confused too (but more in the sense that I probably do not understand you fully).
    My feeling is that some index is just off by 1.
    Would you mind sending your full code? Or the most basic...
  14. Replies
    9
    Views
    169

    I guess that a value of 0 is illegal, but don't...

    I guess that a value of 0 is illegal, but don't know what issues this causes.
    What I actually wanted to say is that you think you sent to channel 2 but actually you sent to channel 1.
    By the way, I...
  15. Replies
    9
    Views
    169

    MIDI channels start numbering at 1, not 0. You...

    MIDI channels start numbering at 1, not 0.
    You start "int y = 0" and then print "Serial.print(midichans[y],HEX);"
    Could that be the issue?

    Paul
  16. About the wire stub warnings: do you use the...

    About the wire stub warnings: do you use the default Design Rules provided by Eagle?
    Got the wire stub box checked:

    28080

    Paul
  17. Checked the design once more, but still got those...

    Checked the design once more, but still got those 6 wire stub warnings...

    28079

    Not sure why I get these warnings and you don't... Anyway, go for it! (standard disclaimers apply though :) )
    ...
  18. On the schematic: I see that you use only 1...

    On the schematic: I see that you use only 1 signal [PY1] to drive all 4 FET's. Is that indeed your intention? I'm asking because you have signals PY2, PY3 & PY4 on Teensy pins.

    28072

    On the...
  19. Replies
    18
    Views
    376

    From this...

    From this file, it looks like pin 2 = SRCLK, pin 3 = RCLK & pin 4 = SER have been defined:

    28071

    So zip to do with SPI comms.

    Paul
  20. Yes, those airwires are really showing an issue:...

    Yes, those airwires are really showing an issue: Eagle tells you that those pins are not [yet] electrically connected.

    But before reordering the PCB, I first would measure [using an ohm meter]...
  21. Was able to open your project. It complained...

    Was able to open your project.
    It complained about some missing libraries though.
    Even with hitting the ratsnest button and filling in the copper planes, it still complains about airwires:

    28063...
  22. Could you also send the schematic [.sch file]? Or...

    Could you also send the schematic [.sch file]? Or preferably the whole Eagle project?
    Findings issues from only the .brd is nearly impossible...

    28062

    By the way: I see a whole bunch of not...
  23. Replies
    6
    Views
    282

    Teensy 4.1 does not have a DAC pin so it can't...

    Teensy 4.1 does not have a DAC pin so it can't output an analog signal to the PropShield for amplification.

    The audio input pin on the PropShield:
    28060

    Teensy 4.1: instead of a DAC output...
  24. You could start by posting your schematic....

    You could start by posting your schematic. Looking into the PCB file may be the next step.

    Paul
  25. Replies
    18
    Views
    376

    Are you sure? See...

    Are you sure? See https://uk.farnell.com/c/semiconductors-ics/logic/shift-registers?st=74ahct595

    Paul
  26. Replies
    18
    Views
    376

    @SteveSFX: the OnSemi 74VHC595MX does not have...

    @SteveSFX: the OnSemi 74VHC595MX does not have TTL-compatible input levels.
    So, if you want to use it as a levelshifter as well by powering the part from 5V, like wramsdell suggests, it is not...
  27. It seems like resistor R8 is broken. From the...

    It seems like resistor R8 is broken. From the bottom of this page:

    27926

    Its value is 100kΩ and it pulls down the enable signal from the processor to the TPD3S014 current-limit switch for the...
  28. Replies
    9
    Views
    342

    If you are talking about USB-based streamer, yes,...

    If you are talking about USB-based streamer, yes, Teensy can do. Teensy can output I2S signals to suitable DAC's.
    Mind you though, the PJRC audio library that makes this all possible is limited to...
  29. Replies
    9
    Views
    342

    I would not be surprised that not using a...

    I would not be surprised that not using a twisting data pair causes issues. After all, we are talking about high frequencies at 480Mbps.
    This spec clearly states that the data pair must be twisted....
  30. Yes, you can. See this...

    Yes, you can. See this article.
    How easy to implement this is, depends on how fast you want the analog output to change and how clean it needs to be.
    You can't use a external DAC, I assume?

    Paul
  31. Replies
    3
    Views
    137

    @xpeedster: we can help you better if you show...

    @xpeedster: we can help you better if you show the exact code you used and how you exactly hooked up both CAN transceivers. Schematic and/or photos do help.
    Regards,
    Paul
  32. From the Pololu...

    From the Pololu page:
    These default RESET and SLEEP states are ones that prevent the driver from operating;
    both of these pins must be high to enable the driver (they can be connected directly to...
  33. Replies
    1
    Views
    214

    Hi John, my suggestion would be to place your...

    Hi John, my suggestion would be to place your question on a more relevant forum, like https://forum.arduino.cc/c/hardware/arduino-wifi-rev2/84.

    Paul
  34. Replies
    5
    Views
    363

    Yes there is: Found on this...

    Yes there is:

    Found on this page.

    Paul
  35. Replies
    4
    Views
    579

    No, you do have to use a CAN transceiver for a...

    No, you do have to use a CAN transceiver for a Teensy 3.2. You don't need to have a separate CAN controller because that controller is built into a Teensy 3.2.

    Paul
  36. Replies
    4
    Views
    579

    That CAN bus module has to be connected to Teensy...

    That CAN bus module has to be connected to Teensy 3.2 serial pins [pins 0 & 1].
    You are aware that a Teensy 3.2 already has a CAN bus controller built-in? And that you only need to connect a cheap...
  37. Replies
    20
    Views
    13,477

    The SN65HVD230 supports speeds up to 1Mbit/s. For...

    The SN65HVD230 supports speeds up to 1Mbit/s. For CAN FD you need a higher speed chip like the MCP2562FD.
    See a suitable board here.

    By the way, in the meantime I have solved the filtering issue...
  38. Replies
    5
    Views
    268

    You can use these pins as well. About your...

    You can use these pins as well.

    About your multimeter: please check your testleads also. Can your multimeter measure resistance? If so, short the testleads and see if the resistance is less than...
  39. Replies
    96
    Views
    3,652

    Good news! Less hot & more power, nice. Just...

    Good news! Less hot & more power, nice.
    Just checking: so you connected a 47uF (or 100uF) cap from motor+ pin to the source pin of the FET [GND]?
    And your 2 photo's above are measured over the...
  40. Replies
    7
    Views
    384

    Yeah, I had the same thought. Why would a...

    Yeah, I had the same thought. Why would a receiver module have 8 channels but only 1 RX...?
    Anyway, glad it's working!

    Paul
  41. Impressive & great job!

    Impressive & great job!
  42. Replies
    7
    Views
    384

    Do I understand correctly that the receiver only...

    Do I understand correctly that the receiver only has a single pin for RX, being pin CH 7?

    27187

    It may be interesting to see how you actually hooked up the receiver and the TXS0108E part....
  43. Replies
    7
    Views
    384

    I googled for "crossfire RC receiver" and got...

    I googled for "crossfire RC receiver" and got many hits.
    Do you happen to have a datasheet of the exact part you are using?

    Paul
  44. Replies
    18
    Views
    7,552

    That seems to be on the low side - I expected a...

    That seems to be on the low side - I expected a higher value for an unpowered board.
    Unfortunately I don't have a T3.6 here, but I measured on a T4.1: ~11K5 between 3V3 and GND.
    Perhaps someone...
  45. Replies
    96
    Views
    3,652

    No, not going to start a holy war here :-) I...

    No, not going to start a holy war here :-)
    I just know that the FDD3706 works fine without a driver, see my message #56.
    Bought 10pcs here. Still on stock.

    Paul
  46. Replies
    96
    Views
    3,652

    With respect to the AP4410 MOSFET: I assume you...

    With respect to the AP4410 MOSFET: I assume you are going to use a driver?

    Paul
  47. Replies
    96
    Views
    3,652

    Well, that sounds like that one FET is broken....

    Well, that sounds like that one FET is broken. Perhaps killed by static when touching the pins? Who knows... I assume you swapped the motors to rule out the motor and its wiring?

    What totally...
  48. Replies
    18
    Views
    7,552

    Hmm, doesn't sound encouraging. With the bare...

    Hmm, doesn't sound encouraging.
    With the bare Teensy not connected to power or USB, can you measure the resistance between pin 3V3 and GND?

    Paul
  49. Replies
    18
    Views
    7,552

    Not necessarily. It sounds more like the onboard...

    Not necessarily. It sounds more like the onboard 3V3 regulator is overloaded.
    Can you see any metal/solder pieces on the board that don't belong there and that could cause a short on the 3V3 line?...
  50. Replies
    96
    Views
    3,652

    I think we have to take into account the...

    I think we have to take into account the electromotive force (EMF) that is generated by the motor when the current through the motor is halted. This EMF voltage will be seen at the drain of the FET....
Results 1 to 50 of 500
Page 1 of 10 1 2 3 4