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Type: Posts; User: emarsh

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  1. Replies
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    Thanks for the tip - I'll take a look at that.

    Thanks for the tip - I'll take a look at that.
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    Well - that's useful. My hang problem with...

    Well - that's useful.

    My hang problem with the probe went away. The probe is a Saleae Logic 8. I've noticed that the Teensy is sensitive to anything that might degrade the i2c signal. The probe...
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    LC Doesn't Repond to Reset Button

    I'm doing some work with an LC using both i2c channels. Sometimes the LC will hang and pressing the reset button won't bring it back so I have to pull and replace the power lead.

    This is not a...
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    LC Doesn't Repond to Reset Button

    I'm doing some work with an LC using both i2c channels. Sometimes the LC will hang and pressing the reset button won't bring it back so I have to pull and replace the power lead.

    This is not a...
  5. Thread: Cpu saturation?

    by emarsh
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    Fair enough. Thanks, Paul. If I see anything that...

    Fair enough. Thanks, Paul. If I see anything that looks strange I'll dig deeper.
  6. Thread: Cpu saturation?

    by emarsh
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    Cpu saturation?

    This is a conceptual question as much as anything.

    The project that I'm working on consists of a touchscreen, Raspberry Pi A+, a Teensy LC and a bunch of sensors. I'm using the Teensy to poll the...
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    Hi, I've got an ongoing project that keeps...

    Hi,

    I've got an ongoing project that keeps evolving. I tried using the fast TFT for my display but it wasn't working out so now I'm experimenting with OpenVG and HDMI on a Pi A+ for the display....
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    The display I'm less concerned about than the...

    The display I'm less concerned about than the sensors. Frankly I don't think it would be a problem if it were to miss a frame now and then. On the Teensy 3.x sensor side I'm playing around with some...
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    Have you had any difficulty moving from one board...

    Have you had any difficulty moving from one board to another? I'm thinking that I might order an A+ to look at while I wait for the next run of Zeros.

    My project is going to be more along the line...
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    Yeah, I know that they are hard to find now. I...

    Yeah, I know that they are hard to find now. I was thinking towards the future. I've got a Pcduino3 Nano I can experiment with in the mean while. As for the xfer I don't rate if I'm not pushing...
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    Raspberry Pi Zero for video?

    I've been trying to output some reasonably fast animation (24 fps) with the Teensy 3.x but have concluded that it's not going to work out. My project requires hard real time performance so a Linux...
  12. This is an old thread but I'm responding to it...

    This is an old thread but I'm responding to it because I'm currently working on the same problem. As a sanity check I started calculating the checksums below and came up with the wrong answer....
  13. It's working - thanks for the help.

    It's working - thanks for the help.
  14. Is the touch functionality working properly? I've...

    Is the touch functionality working properly? I've spent the afternoon trying to get things working using the configuration on the connections diagram...
  15. Thanks but I know you're busy. I'll dig deeper.

    Thanks but I know you're busy. I'll dig deeper.
  16. I'm playing with the fast library and discovered...

    I'm playing with the fast library and discovered something surprising. Essentially I'm trying to develop the equivalent of an artificial horizon for aircraft. I'm displaying the yaw, pitch and roll...
  17. Moving to the new version of the Teensy software...

    Moving to the new version of the Teensy software seems to have fixed the problem with my laptop's display getting messed up too. I have no idea how that was happening.
  18. Just FYI, after running the sample code the...

    Just FYI, after running the sample code the transparencies and fonts are messed up on my Ubuntu laptop running KDE. I had to reboot to make things work again. I'm using a Teensy 3.1. I'm new to this...
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    The fast TFT library provided a decision point. I...

    The fast TFT library provided a decision point. I ordered two of the 320x240 LCDs and a Teensy 3.2. My project is using the razor-9dof-ahrs library which performs a lot of floating point calculations...
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    I realize that this is an older thread but I've...

    I realize that this is an older thread but I've one related question.

    I've got a project that I'm developing on a Due. I chose the Due because it's fast, more and most of the hardware devices I'm...
  21. It there any sort of a timeline on this? An FPU...

    It there any sort of a timeline on this? An FPU might be just exactly what the doctor ordered.
  22. System clock and analog level translation questions

    I'm an experienced professional software engineer but a hardware noob. For decades I've felt that pure software is too abstract - it's lives in it's own domain but is isolated from directly...
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