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Type: Posts; User: Daniel-J

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  1. Replies
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    TLDR: adding 100pf between pin 19/SCL and ground...

    TLDR: adding 100pf between pin 19/SCL and ground fixed it.

    I also had this problem and fixed it with the help of this thread!

    First of all, I am really amazed that Paul figured this out...
  2. Not as much fun, but you can do that without $60...

    Not as much fun, but you can do that without $60 worth of electronics... just a hanging bottle and a tube from the bottle to the fountain. Placed correctly, the water level between the two will...
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    Reading this thread reminds me that dummy loads...

    Reading this thread reminds me that dummy loads were simpler in the 1970s and 80s. You bought a heathkit Cantenna, you added some oil, you fired it up. ...
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    Here's the opto circuit I have used in designs...

    Here's the opto circuit I have used in designs for years with no problems. Yes it will invert the signal, but it's trivial to invert again in software. The 10K works fine as the current needed by an...
  5. Than you for the excellent explanation! (And...

    Than you for the excellent explanation! (And thanks for Teensy too.)

    I'm using SerialFlash, which had me a bit confused as it only works with single die chips. It strikes me now that with the...
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    I'd also try running the EraseEverything sketch,...

    I'd also try running the EraseEverything sketch, and/or first formatting your card with the the official SD association software: SDFormatter.
  7. Using 1gb eeproms with two chip select pins

    I've been trying to figure out how to use dual-die eeproms, like the PeskyProducts 1GB memory board shown here.

    Dual die chips have two dies stacked on top of eachother, and share all pins except...
  8. Ah, it's a bit like vero board... It's pretty...

    Ah, it's a bit like vero board... It's pretty difficult to see what is going on in the pic, as for some reason you have run all the wiring on the bottom side, and the components are on the other...
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    4ucon.com is the connector company that supplies...

    4ucon.com is the connector company that supplies basically all of the stacking header for the Arduino ecosystem. Go there, register an account and you can see the prices. You will die when you see...
  10. They are talking about building your own motor...

    They are talking about building your own motor driver, which is what you would do with one or more transistors. You have a motor driver, you do need any more transistors. There are already 8...
  11. Here's the schematic for what I use to run a...

    Here's the schematic for what I use to run a Teensy and a bunch of other chips off of a single 3.7V LiFePo4. It's the TPS61202, a Texas Instruments boost converter. With it, the battery can go as low...
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    You must be using a 10:1 probe! It's too weird...

    You must be using a 10:1 probe! It's too weird that the reading is exactly 10% of what one would expect.
  13. The thing that strikes me is how fast the sensor...

    The thing that strikes me is how fast the sensor weill be reading (1000 reads per second? Or perhaps more?) and comparatively how slow the human mind perceives change. I wonder if you are swamping...
  14. Hardware thoughts: - ditch the external...

    Hardware thoughts:

    - ditch the external arduino as power supply

    - use the teensy +3.3V supply and ground to power the sensor.
    The Teensy 3.3V supply provides up to 100ma; less than 10ma is...
  15. I'm amazed at ho many times you have to say this,...

    I'm amazed at ho many times you have to say this, and yet, people still do not post their code! Off topic, but perhaps you should change the forum CSS to format that message in huge bold type with a...
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    Solved... Adding a 50uS delay to the readID()...

    Solved...

    Adding a 50uS delay to the readID() function inside of SerialFlashChip.cpp did the trick. Code below.
    I'm guessing that the fairly large and slow(er) eeprom needed a bit of time to...
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    Thanks for that idea Frank. I thought that was a...

    Thanks for that idea Frank. I thought that was a good idea as well so I gave it a shot with .01, .1 and .22uf, but it did not do anything other than entirely preventing startup in one or two of the...
  18. If you open SerialFlashDirectory.cpp ...

    If you open SerialFlashDirectory.cpp in the library, one of the first defines is

    #define DEFAULT_MAXFILES 600

    Not sure what happens if you increase it, but worth a try...

    D
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    Double check your wiring, especially in the power...

    Double check your wiring, especially in the power supply region...
    in my experience, high current loads (20 leds x 50ma each(?) - 1 amp) can quickly destabilize the processor power supply. Just a...
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    Here's the board I am using. It has a charger and...

    Here's the board I am using. It has a charger and step up converter for an 18650 cell, which all works great. The big black block in the middle is the BNO055 position sensor, raised above the board,...
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    Startup/hard reset problem.

    I've got a little board I designed that has these things on it:
    - Teensy 3.2
    - SGTL5000
    - S25FL256S flash eeprom (link to Digikey page)
    - BNO055 position sensor board

    These are used to play...
  22. Solved. And it only took me 10 or 15 hours to...

    Solved. And it only took me 10 or 15 hours to realize that these two lines were missing:


    SPI.setSCK(14); // Audio shield has SCK on pin 14
    SPI.setMOSI(7); // Audio shield has MOSI on pin...
  23. One thing I have discovered so far is that the...

    One thing I have discovered so far is that the S70FL256P0XMFI001 is a dual die flash chip ( 2 x 128Mbit dies in one package) Therefore it has two chip selects, and each die has to be configured,...
  24. You might find something in the code here:...

    You might find something in the code here: https://learn.sparkfun.com/tutorials/vox-imperium-stormtrooper-voice-changer
    Stormtrooper voice shifting seems like a similar proposition.

    D
  25. hang when trying to play raw files from SPIflash

    hello folks:

    I'm wondering if anyone has insight into the problem ia having trying to play raw files from spi flash.

    I'm using my own board with an SGTL5000 that a Teensy 3.2 plugs into. So...
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    Old thread, but FWIW, I am on my sixth order with...

    Old thread, but FWIW, I am on my sixth order with ITead and have had zero problems. Several of the orders included tiny WQFN chips, the pads for which were perfectly etched and masked. Total price...
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    Reversed MOSI/MISO pins in library?

    I just a got a batch of boards back that refused to work. Ultimately I think it traces back to MISO/MOSI being reversed in the Teensy_3.1_DIL package of the library...
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