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Type: Posts; User: freto

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  1. Replies
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    Michael, your board looks great I would suggest...

    Michael,
    your board looks great I would suggest to add two things not available elsewhere:
    - Place for two more stepper motors to drive four extruders, so it is possible to use E3D Kraken or to do...
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    Thanks for helping, finally after rebooting my...

    Thanks for helping,
    finally after rebooting my computer it works, with the original example and with your code also.
    Why it didn't work the first time is still a mystery but I can continue my...
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    Teensy 3 and pySerial

    I am trying to control the Teensy 3 or 3.1 with pySerial. When I run the simple example code below nothing happens!
    I have tried on Mac and Windows, it works with an Arduino Uno but not with Teensy...
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    First I removed the wavy grid separating the...

    First I removed the wavy grid separating the LEDs, I don't know why it is there.
    Then I glued a grid made with a laser cutter, on top of it a sheet of transparent acrylic on which I glued two sheets...
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    Thanks for your interest, if you are referring...

    Thanks for your interest,
    if you are referring to the Teensy breakout shield, yes it comes with the white header to be soldered under the Teensy.

    By the way, for the led matrix I am using an...
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    The links seems to work for me. Anyway please...

    The links seems to work for me.

    Anyway please try http://petitstudio.blogspot.jp/
    Or the direct link for the post is:...
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    32x32 RGB LED matrix project completed

    Hello,

    I finally completed a 32x32 RGB LED matrix project, I describe a few things and posted a working sketch (based on MarkusL previous contribution) to paint with LEDs on my blog here.

    1978...
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    Mostly fully assembled, but the sample is not yet...

    Mostly fully assembled, but the sample is not yet representative!
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    Yes I finally put it live, and was surprised with...

    Yes I finally put it live, and was surprised with a few orders this morning:)
    For voltage regulator I choose 6-14V input down to 5V-800mA, but there are a lot of regulators that can fit the size....
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    I am using these; not hard to solder with a...

    I am using these; not hard to solder with a simple soldering iron.
    1880
  11. Replies
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    Hello, I will have a breakout board & shield...

    Hello,

    I will have a breakout board & shield ready for Tindie in the next few days (bad timing I guess!). Anyway, it is quite convenient to do a lot of prototyping and use Arduino shields, all the...
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    Thanks Pete, indeed it was an obvious mistake......

    Thanks Pete,
    indeed it was an obvious mistake... and it's not the first time I make it!
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    Addressing pins of PORT A or B

    I am trying to control the pins of PORT B or A, I can control the first 4 pins but not beyond.
    Following the table found in this thread, I made a simple example, it should blink a LED set on pin 0:...
  14. Teensy 3 + Adafruit nRF8001 BLE, library compile problem

    I am trying to compile the demo code of the ADAFRUIT_BLE_UART library available here and tutorial here. I am using a Mac and latest Arduino and Teensy versions. The library compiles with Arduino or...
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    Mac Serial and Upload problem

    I have been using Teensy 3.0 without any trouble on a MacBook for a while. Since 2 or 3 months (probably since I installed Mac OS Maverick, but I am not sure) I have often troubles uploading codes...
  16. I changed parts of Markus sketch for my purpose...

    I changed parts of Markus sketch for my purpose (display a 32x32 image and interactive painting), it works well except for a global color change from row 16 with BAMMAX = 7. If I reduce the number of...
  17. Hello, I found the .jar program in bin...

    Hello,
    I found the .jar program in bin directory; I can confirm that it works with the LED panel. The program displays the top left portion of my screen.
    Thanks for your efforts and sharing.

    Now...
  18. Thanks a lot, I could easily display the...

    Thanks a lot,
    I could easily display the gradient with Teensy 3.0, this is very helpful. Now I am trying to understand the format of your matrix. I can see 4096 numbers, but the pixel value and...
  19. Thanks Markus for sharing your efforts, I am...

    Thanks Markus for sharing your efforts,

    I am trying to understand and adapt your code to my needs but no success so far. I cannot run your Java code on my Mac, some problem with jssc, but from its...
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    It looks like the Teensy 3.1 is also available in...

    It looks like the Teensy 3.1 is also available in purple at OshPark!
    Is this a limited (for sure it will be collector value in a few years) edition?
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    Gameduino2 is working well with Teensy3

    This is just to inform everybody that the Gameduino2 works with the Teensy 3 family out of the box.
    I am not much of a gamer, but to use as a display for sensors and all, it is apparently a very...
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    32x32 led panel, working code to improve

    I have been playing with a 32x32 led panel sold by Sparkfun or Adafruit and quite a few places in China. It seems that most people with Arduinos use the library made by Adafruit however it doesn't...
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    Thanks for your comments. I added the sketch and...

    Thanks for your comments.
    I added the sketch and Processing files of this project at the bottom of the post.
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    WS2811 LED cube project description

    Hello,
    I would like to present a small project made thanks to the Teensy 3.0 and the OctoWS2811 library.
    It is a 8x8 panels cube handmade, and the LEDs are "painted" by Serial communication from a...
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    For me also the PSX2 library does not work, it...

    For me also the PSX2 library does not work, it compiles fine with Arduino 1.05 and Teensy 1.16, however I could not communicate with the controller.

    However I found a code from David Wegmuller...
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    Hello, for your OpenLog problem I have this...

    Hello,

    for your OpenLog problem I have this idea: You said that you connected the OpenLog to Rx and Tx. The Teensy 3 does not have Rx and Tx pins, instead there are RX1-TX1, RX2-TX2, and RX3-TX3....
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    The function AK8975::getHeading(... uses...

    The function AK8975::getHeading(... uses delay(10) only one time. If you call X, Y, and Z separately you will need a delay for each call. Study and try the examples and you will see.
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    Download the whole library at...

    Download the whole library at https://github.com/jrowberg/i2cdevlib/tree/master/Arduino
    There is one folder for AK8975, in the file AK8975.cpp, in the function AK8975::getHeading you will see a...
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    Space, I think you are confusing the speed of the...

    Space, I think you are confusing the speed of the I2C bus which indeed can be 100 KiloHertz or 400KHz and the sensor speed which is more limited in this case.
    For a simpler implementation you can...
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    FreeIMU has no implementation of the AK8975...

    FreeIMU has no implementation of the AK8975 magnetometer, so it works like for a MPU6050 (Gyro+Accel)

    I think you will not get 400Hz from the magnetometer (the datasheet says that the maximum is...
  31. Teensy3 and infrared temperature sensor MLX90614

    I am trying to communicate with the MLX90614 infrared temperature sensor from Melexis using I2C on the Teensy3.
    All the examples if found use the i2cmaster library (with the repeat start function...
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    Thanks a lot Nantonos, the problem is solved with...

    Thanks a lot Nantonos, the problem is solved with your advice.
    Merci.
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    I2C barometer BMP085

    Hello,
    I am trying the I2C barometer Bosch BMP085. For a start I am using the breakout sold here with pullups enabled. The code is so far an example which give correct values with an Arduino but...
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    Following your explanations I made a quick (and...

    Following your explanations I made a quick (and very educative) experiment. I replaced the thermistor by a resistor to make a simple voltage divider.
    I measured 300 samples at 10Hz sampling rate,...
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    Thank you all for explanations. I don't think...

    Thank you all for explanations. I don't think this has to do with cable length or DC input noise, I also tried a lab power supply with connection to AREF, same result.
    Here is a picture of my...
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    Hello, I am experiencing a similar behavior as...

    Hello,
    I am experiencing a similar behavior as in the first post. I am reading temperature with a thermistor and my circuit and code are very similar than this tutorial from Adafruit. My setup works...
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