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Type: Posts; User: gavspav

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    Yeah it will read low when near the magnet. You...

    Yeah it will read low when near the magnet.
    You really don't need to buy the same board, just delete all the wifi stuff and use a standard array format and it should run fine.
    I think the Teensy is...
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    I used reed switches and magnets as opposed to...

    I used reed switches and magnets as opposed to hall sensors but the code should be pretty much the same.

    In setup I timed how long it took to draw a complete image then in the main loop I timed...
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    Thanks for all your help in this. I 'finished' my...

    Thanks for all your help in this. I 'finished' my project.
    Here's a photo:

    8938

    I didn't end up using your code @mortonkopf or the teensy in the end but they were invaluable starting points....
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    Same thing with Arduino 1.6.9 and Teensyduino 1.3...

    Same thing with Arduino 1.6.9 and Teensyduino 1.3

    I'll try with the hex files tomorrow.
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    Yes of course. Teensy 3.2, Arduino 1.6.12 with...

    Yes of course. Teensy 3.2, Arduino 1.6.12 with Teensyduino 1.31 - beta 1, Raw Hid on OSX 10.9.5

    I guess I should try an older version of Arduino with a release version of Teensyduino, thanks for...
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    Teensy Transfer Sketch Compile Error!

    I'm trying to use TeensyTransfer with my Prop Shield.
    When I try to upload the sketch to the Teensy I'm getting an error:

    no matching function for call to 'SerialFlashChip::begin(const int&)'
    ...
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    Oh my mistake sorry!

    Oh my mistake sorry!
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    Yeah I'm keeping the thread alive by being well...

    Yeah I'm keeping the thread alive by being well behind the curve!

    All I meant with the data was that if it was stored in the large array in the order pixel 1 slice 1, pixel 2 slice 1, pixel 3...
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    I'm still working on this project but I've moved...

    I'm still working on this project but I've moved off the Teensy and onto the Wemos D1R2. I'm making pov on a bike wheel but development was so annoying having to stop the wheel and plug the teensy in...
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    Yes I started into the trigonometry which brought...

    Yes I started into the trigonometry which brought back (half) memories.
    Then I tried (in software) rotating the image 1 degree at a time and grabbing a thin segment of the image and converting it to...
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    Ah thanks - so it just resizes it according to...

    Ah thanks - so it just resizes it according to the input variables and spits it out as hex values?

    The problem I was finding was that the part of the image nearest the point of rotation was...
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    Not fragile at all in my experience. The only...

    Not fragile at all in my experience. The only ones I've killed have been by snapping the usb port off.
    Not all usb cables are suitable for data transmission though - so check that.

    Anyway how...
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    @mortonkopf wondering if you could explain how...

    @mortonkopf wondering if you could explain how your image converter works or at least the most effective way to use it.
    Say if I have 60 LEDS is it best to have a 120 x 120 pixel image? 24 bit...
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    Dunno but I split the signal wire into four with...

    Dunno but I split the signal wire into four with an arduino installation and it worked.
    You might want to try that? You might have to raise the voltage to 5v
    Alternatively maybe you could use...
  15. No, only advantage is that I have one sitting...

    No, only advantage is that I have one sitting here!
  16. Dmx over Ethernet using OctoWs2811 adaptor

    I'm wanting to send data to a dmx decoder like this one
    and I'm wondering if I could use the ethernet port on the Octows2811 adaptor to do it?

    It looks like the first pair sends the signal and...
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    Sample from Microphone

    I'm creating a project where I want to record a short sample from a microphone (using a button)
    And then play that sample back using a ldr or similar.

    Its very simple but I'd just like to ask if...
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    Ok here's...

    Ok here's a link to a video clip of the matrix.
    It is an interactive sign which lights up when a chain of people bridge two pedestrian barriers mounted on a platform.
    It was installed at Cheriton,...
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    Will do at the weekend. My workshop is too small...

    Will do at the weekend. My workshop is too small to get any decent video. In fact I can't really tell what it looks like!
    I say 4800 pixels cos that's how many the teensy thinks there is. In reality...
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    Ok I've got to the bottom of this one and...

    Ok I've got to the bottom of this one and surprise suprise, wait for it.......
    It was a basic programming mistake!
    My loop reading the serial data was from i=0 to 4 when it should have been 0 to 3...
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    No I changed that myself to try and sort the...

    No I changed that myself to try and sort the scramble out!
    I haven't run out of memory have I?
    If I reduce the leds per strip to 500 the problems seem to go away - a bit hard to tell but the...
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    Ok I've tried it and I'm having a few issues....

    Ok I've tried it and I'm having a few issues. I've got it a 192 x 22 matrix set up and I'm sending data from Jinx to Teensy.
    Its working great except for the last chunk of data which is a bit...
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    Thanks - yeah I know Teensy can do 4000 Leds easy...

    Thanks - yeah I know Teensy can do 4000 Leds easy - just wasn't sure whether the serial stuff would work that quickly.

    I'll give it a try Monday - annoyingly I stepped on my OctoWs2811 adaptor and...
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    Any idea of a maximum limit for number of pixels...

    Any idea of a maximum limit for number of pixels with this code?
    I'm wondering if it's realistic to attempt drive 3000 pixels from Jinx using the Glediator protocol?
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    Tried it with AC but my meter's lowest range is...

    Tried it with AC but my meter's lowest range is 200v and it read out as 0.0.
    I am intrigued by the fact that it only seems to occur with identical r,g and b values though.
    Any ideas?
    I am...
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    Ok here's a weird thing - if I try to do a...

    Ok here's a weird thing - if I try to do a colorwipe with white I get flickering, even if as I said it is less than full power eg 0x808080
    But if I change the definition of white to 0x808081 or...
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    Hmm ok I tried this and voila no flicker. So that...

    Hmm ok I tried this and voila no flicker. So that means its data corruption. Not sure how to proceed but I'll start off by testing with one length of 500 pixels with shorter wire lengths and take it...
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    I measured the difference between ground points...

    I measured the difference between ground points across 600 pixels and my cheap multimeter reported a peak of 0.12 volts.

    Didn't seem significant really?
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    LED's flickering when white.

    I'm building an OctoWs2811 matrix. It will have up to 8 strings of 500 pixels

    I'm getting a weird flicker when the pixels are white though. Its not OctoWs2811 or teensy specific as I got it with...
  30. I finally got the board wired up and the panels...

    I finally got the board wired up and the panels working (thanks Mortonkopf) but can't get any of the examples in the thread mentioned or the fadecandy stuff to work. (posted in smartmatrix community...
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    Yup - wrong way. durr.

    Yup - wrong way. durr.
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    Thanks so much - you have fixed it for me. :D

    Thanks so much - you have fixed it for me. :D
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    I think you might be right about the diode. I'll...

    I think you might be right about the diode. I'll check it out tomorrow. Thanks very much for the help.
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    Good idea. Why didn't I think of that? And yes...

    Good idea. Why didn't I think of that?

    And yes it does blinks when powered directly.
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    I've bought another teensy + shield, soldered...

    I've bought another teensy + shield, soldered them up and still can't get it to work.
    The teensy blinked before I separated vin & vusb and soldered the shield on.

    With the multimeter I get 5v...
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    I plugged the power supply in and the usb cable...

    I plugged the power supply in and the usb cable so I could upload the smartmatrix sketch.
    I then realised I couldn't upload the sketch.
    I then realised the teensy should be blinking anyway and...
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    I was following these instructions ...

    I was following these instructions

    I have a 5v power supply but the open circuit voltage is 6v. Can the teensy 3.2 handle this?

    I've ordered another teensy as I think I must've killed the...
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    Its hard to get to the pads because of the...

    Its hard to get to the pads because of the smartmatrix shield!

    There is no voltage between the Analog Power 3.3v pin and ground.

    Between the Vusb hole and ground is 6v.

    I don't think there...
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    Teensy not blinking - how to proceed?

    I just got a Teensy 3.2 and a SmartMatrix SD Shield.
    I cut the strip between Vin and Vusb and soldered them together.
    Stupidly (in retrospect) I didn't test the teensy before soldering.

    Anyway I...
  40. Thanks - I know I can do it with strips but they...

    Thanks - I know I can do it with strips but they won't fit in the enclosure unfortunately.

    I'm just trying to get some idea of any problems ahead if I try to use Matrices!
  41. Possible to show video on cheap RGB Matrix Display

    So a friend of a friend is in a band and wants me to make a 64 x 16 display which will fit in a 19" rackmount case.
    I'm thinking of using two of these

    I've made a giant 32 x 16 ws2801 wall before...
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    I just found this thread I made a few months back...

    I just found this thread I made a few months back - https://forum.pjrc.com/threads/27973-W5100-shield-and-Teensy-3-1?highlight=Ethernet+shield

    looks like I already tried it with the Ethernet...
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    Octows2811 adaptor and ws2801?

    I've got an octows2811 adaptor lying around and I was wondering if it would be possible to use it to drive my 32 x 16 ws2801 Led Wall via Artnet.

    Made the wall a while back and drive it with...
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    Thanks. I already did that though I think. ...

    Thanks. I already did that though I think.

    Turns out I hadn't pushed the Teensy in the Breadboard properly (what a donut!)

    Also the ethernet cable didn't work.

    Seems to be working now!
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    W5100 shield and Teensy 3.1

    I'm trying to get an Arduino Ethernet shield I had lying around to work with my Teensy 3.1

    I realise its not the newest tech but from a bit of googling it looked like it should (probably) work.
    ...
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