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  1. Thread: Thanks!

    by guzu
    Replies
    1
    Views
    546

    Indeed. Thank you all!

    Indeed. Thank you all!
  2. I tried both codes (the older one in post #1 and...

    I tried both codes (the older one in post #1 and the one in post #7) but both give me the same error. I use the latest NRF24 version from TMRH.
  3. The issue is now resolved. I did a fresh install...

    The issue is now resolved. I did a fresh install of the Arduino IDE and Teensydoino and now all works ok.
    Thank you all for your input.
  4. I am indeed using the audio board (SGTL5000). The...

    I am indeed using the audio board (SGTL5000). The program is the one in Examples > Audio > Tutorial > Microphone check, with the added serial print of the analogRead. It compiles and I can upload it....
  5. Audio library and analogRead() not working together on Teensy 4.0

    As the title says, I noticed that my Teensy 4.0 gets stuck when I upload a code which has both the audio library code (see code bellow) and analogRead() lines in it.
    In this situation, the Teensy...
  6. I tried compiling your code as I downloaded it...

    I tried compiling your code as I downloaded it and I get the following error:





    In file included from C:\Users\...\Downloads\Nrf24Audio (1)\Nrf24Audio\Nrf24AudioTx\Nrf24AudioTx.ino:12:0:...
  7. This is an awesome project. Thank you for...

    This is an awesome project. Thank you for sharing.
    Do you happen to have a simpler version of the code that I could use in my Walkie Talkie project? Your current version is quite complicated for me...
  8. Thank you very much.

    Thank you very much.
  9. Thank you for this information. I will probably...

    Thank you for this information. I will probably go with the reflective optical switch and the paint on the axle. Do you have a recommendation of a good optical switch that would be fast enough?
    I...
  10. Thank you Paul. The diameter of the axel is...

    Thank you Paul.
    The diameter of the axel is 50mm.
    Since I am very new to the Teensy USB software part, is there a way to get the data from the Mouse to be printed on the Serial Monitor?

    Thank...
  11. Measuring RPM of axle using Teensy 4.1 and an optical mouse sensor

    Hello everybody,

    As the title of this thread says, I was wondering if it would be possible to measure the RPM of an axle (and then do the math to find the linear speed) using a optical mouse...
  12. After further investigation it turns out that the...

    After further investigation it turns out that the problem is still present. Even with other libraries the modules do not work together without commenting out the lines below.


    With the sparkfun...
  13. If anyone comes to this thread troubleshooting...

    If anyone comes to this thread troubleshooting the MAX31855 thermocouple and Teensy, the problem is solved by using a different library. The SparkFun library works. I got sidetracked because the...
  14. Thread: Raspberry Pi Pico

    by guzu
    Replies
    212
    Views
    25,154

    I will most likely use the Teensy. :) As far as...

    I will most likely use the Teensy. :)
    As far as the Pimoroni module, I believe that the module is only i2s out. I want to use the input as well.
    Thanks.
  15. Thread: Raspberry Pi Pico

    by guzu
    Replies
    212
    Views
    25,154

    Thank you for the info, Paul. I was thinking of...

    Thank you for the info, Paul.
    I was thinking of using the Pico to build a very rudimentary walkie-talkie using the teensy audio board. Just transmitting voice from a microphone to another device...
  16. Thread: Raspberry Pi Pico

    by guzu
    Replies
    212
    Views
    25,154

    I know, and I am using the Teensy :). I was just...

    I know, and I am using the Teensy :). I was just wondering if anybody already has the code.
  17. Thread: Raspberry Pi Pico

    by guzu
    Replies
    212
    Views
    25,154

    Is it possible to make the Rpi Pico work with the...

    Is it possible to make the Rpi Pico work with the Teensy audio adapter? (input and output)
    I am thinking it probably is, using the PIO, but it is beyond my level of knowledge :)
    If yes, does...
  18. Replies
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    51,467

    Nice. Will the microMod board expose more IO...

    Nice.
    Will the microMod board expose more IO pins then the Teensy 4.1?
  19. Replies
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    629

    Thank you very much.

    Thank you very much.
  20. Replies
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    629

    Thank you very much for the info. This module...

    Thank you very much for the info.

    This module seems to be working. I managed to power it last night and it got a lock on a few satellites from inside my apartment. Still, could you give me a link...
  21. Replies
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    629

    Using antenna with gps module and Teensy 4.1

    Hello everybody,

    I have a question regarding this GPS module (also see images for the actual module I have) connected to a Teensy 4.1.

    The PCB mounted antenna on the bottom is quite weak and I...
  22. Replies
    7
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    1,089

    I am also interested if this will be open source....

    I am also interested if this will be open source.
    Also, how did you increase the range of the NRF module?

    Thanks.
  23. Replies
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    1,417

    I tried this library and the display is white. I...

    I tried this library and the display is white. I did not change anything in the INIT lines because it is over my head :)
  24. Replies
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    1,417

    This ...

    This is the one I bought. The silkscreen on the back is a little different, but the placement of the parts is exactly the same.



    Thank you KurtE. I made some progress with the library in the...
  25. Replies
    12
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    1,417

    After much searching, I think I have found the...

    After much searching, I think I have found the actual LCD used in my display. It is this one (the 42 pin version).
    It says there that it uses the R61581 driver.

    Is this a discrete driver? Or the...
  26. Replies
    12
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    1,417

    Thank you for this information. I have done this...

    Thank you for this information.
    I have done this but the display is still white.



    I don't know what you meant by


    Where in the files could I find these commands?
  27. Replies
    12
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    1,417

    Thank you @mjs513 I have downloaded your library...

    Thank you @mjs513
    I have downloaded your library and used the graphicstestKeDei sketch. However the display is still white.
    Here is the code I used:
    ...
  28. Replies
    12
    Views
    1,417

    3.5 inch RPi LCD with Teensy 4.0 problem

    Hello.
    I want to use a 3.5 inch RPi LCD + Touchscreen with the Teensy 4.0. The display can be seen here. I know the page is not in English, but I could not find something else. At least, you can...
  29. Wow. Good job. I want to use this. But since I am...

    Wow. Good job. I want to use this. But since I am a bit new to GitHub, could you tell me how to actually download and run your simulator? (Sorry if this is a stupid question:) ) Thank you very much.
  30. Thank you very much for this information. I...

    Thank you very much for this information. I really haven't thought about he thermal considerations until now. I will try to change the PCB design to incorporate the TO220 package in the next...
  31. Thank you KurtE for the information. The lab...

    Thank you KurtE for the information.

    The lab power source can provide up to 20A of current.
    Those converters are indeed a bit overkill for my project.

    Doing some more testing today, I...
  32. The vias were supposed to connect on the bottom...

    The vias were supposed to connect on the bottom layer with a solid region the sizes/shape with the one on the top layer. But I made a mistake and did not include it in the gerber sent to the PCB...
  33. Yes. Basically it is the exact holder in the...

    Yes. Basically it is the exact holder in the link, with the exact wires, just for 3 batteries.
    If the batteries/connections to the PCB were the problem, wouldn't it be solved if I connect the PCB to...
  34. The power source is now 2 or 3 battery cells...

    The power source is now 2 or 3 battery cells (18650) connected in series (7.4V or 11.1V total) connected to the PCB with cat6a wires using this and this connectors. I also have access to a lab bench...
  35. I use a 4 layer PCB with the layers GND - GND -...

    I use a 4 layer PCB with the layers GND - GND - 3.3V - GND. The GND layers are stitched together with vias every 2.54mm (where possible). You can see the actual PCB layout here.
    Every component has...
  36. So today I resoldered all the pins that I could...

    So today I resoldered all the pins that I could think of on the Teensy and the PCB. This did not solve the SPI problem.

    However, I now think that it is indeed a power issue.
    Here is how I ended...
  37. This means that instead of using SPI.begin() I...

    This means that instead of using SPI.begin() I just use SPI1.begin()? Or do I have to do other changes too?


    Thank you very much for clarifying this.
  38. I understand now. Thank you very much KurtE.

    I understand now.
    Thank you very much KurtE.
  39. Hello. Did you manage to use pin 27 as SCK? I am...

    Hello. Did you manage to use pin 27 as SCK? I am having the same problem.
  40. Hopefully today I will get around to check the...

    Hopefully today I will get around to check the soldering of the Teensy pins.
    Until then, could someone tell me the exact steps/code lines I have to use to get the SCK pin from pin 13 to pin 27 of...
  41. I have placed on the PCB pull ups on every CS...

    I have placed on the PCB pull ups on every CS line for the devices connected to SPI. 4.7kOhm. Is this too low or to high?


    I will unplug the Teensy and connect one pin at a time with DuPont...
  42. 1. Will check. 2. As far as the LED on pin 13...

    1. Will check.

    2. As far as the LED on pin 13 goes, I don't know if it is too much load for the SCK signal. Could the problem be just the LED? Because I could just desolder it and continue to use...
  43. I will measure this. One more thing: The SPI...

    I will measure this.
    One more thing: The SPI buss stops working only when I measure the SCK voltage directly on the pin of the Teensy. If I put the GND probe on a GND anywhere on the PCB and the...
  44. So I have done some more testing today. - I...

    So I have done some more testing today.

    - I soldered thick wires (from a CAT6a internet cable) from the 3.3V, 5V and GND pins of the LDOs to the PCB (3.3V pins of the NRF24, 5V and GND pins of the...
  45. Thank you PaulS for your input. I checked today...

    Thank you PaulS for your input.
    I checked today the total power consumption of the board. With the Oled and shift lights connected and fully on, the PCB consumes about 490 mA maximum.
    Still I will...
  46. After some time testing everything I could think...

    After some time testing everything I could think of, it turns out that there was some cross talk between the SCK traces and GND somewhere on the PCB. :mad: (This was hard to properly check beforehand...
  47. In post #1 there is a link where you can see the...

    In post #1 there is a link where you can see the actual PCB if you want.
    Nothing is powered by the Teensy 3V3 pins. Everything that uses 3.3V is powered from a 3.3V 1A LDO.
    The I2S pins are...
  48. Commenting out just one of those two lines of...

    Commenting out just one of those two lines of code does not solve the problem. In fact, i think that when I comment out just the i2s2 lines the problem gets worse (more noise on the oled and the SCK...
  49. Thank you PaulS! If anyone reading this finds...

    Thank you PaulS!

    If anyone reading this finds a possible solution please write here.

    Thank you to everyone who tried to help. I really appreciate it.
  50. The power supply for the 3V3 parts is Q1. It is a...

    The power supply for the 3V3 parts is Q1. It is a LDO capable of supplying up to 1A of power. This LDO in not getting hot at all. It is just warm.
    The Q2 5V LDO is getting hot only when I connect a...
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