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  1. M

    Touch library and static electricity

    Thanks Paul, That makes a lot of sense. Does anyone have experience with using any of the off the shelf TOV chips to help with this? I going to use the above techniques but would be interested to hear any other opinions on TOV. Thanks, mauricio
  2. M

    Touch library and static electricity

    Hi, I'm using the touch library to create a set of input signals to control a light sculpture. The metal inputs are large 1/8" steel plates. The setup works very well and can get some good response to how much of the metal input is being touched. The devices are going to be deployed in a...
  3. M

    Teensy 3.1 not working after soldering the headers.

    Thanks Paul. Yes, it was an RTFM moment. Hate when that happens. I needed to make some updates to my makefiles & library creation and all is good now. Thanks again, mauricio
  4. M

    Teensy 3.1 not working after soldering the headers.

    I'm having similar issues on a Mac. I have 3 new 3.1s and none of them are showing up in /dev/tty. I have a bunch of 3.0s that are working fine and I'm having no issues with programming. New installation of TD & reboot. It looks like the hardware is working fine. The test program runs (and...
  5. M

    Programming without a computer

    Hi, I'm looking for some advice here. I have a configuration of ~30 Teensy3s that need to be programmed in the field (harsh outdoor environment). I was planning on using a beater laptop to walk to each installation and upload new programs as needed. I'm thinking that there must be a simpler...
  6. M

    T3: linking libarm_cortexM3l_math.a

    Thank you for finding the error in my ways. I was indeed careless and shouldn't post so late (only in the mornings from now on). Fixed and working. Thanks again, mauricio
  7. M

    T3: linking libarm_cortexM3l_math.a

    Hi Paul, I tested the CMSIS examples on the new Beta and they worked fine. I'm trying to add an analogRead to the example and I'm getting some linking errors. I'm not familiar with these. Not including the analogRead links ok. Thanks, mauricio #define ARM_MATH_CM4 #include "arm_math.h"...
  8. M

    T3: linking libarm_cortexM3l_math.a

    OK! Thank you very much. I'm linked and running. The basic sample is passing the initial test. I'm going to start playing around more with real data but am very excited to have gotten over the hump. Makefile conniptions. As for the market, in the Bay Area artistic community, this kind of...
  9. M

    T3: linking libarm_cortexM3l_math.a

    Wow, timing is everything. I was just starting to look into this for my project to have some more interesting frequency response. (https://www.facebook.com/seagrassProject) Everything worked up to the link. I'm doing most of my development from a makefile but wanted to try to get this to...
  10. M

    Temperature on analogRead(38)

    Thanks for the response. I see the channel 26 but I also see 38 getting mapped to 26 in analog.c. What I think the problem was is that I wasn't properly calibrating. Working now! Thanks again, mauricio static const uint8_t channel2sc1a[] = { 5, 14, 8, 9, 13, 12, 6, 7, 15, 4, 0, 19, 3...
  11. M

    Temperature on analogRead(38)

    Hi, I'm having trouble getting a read from the on chip temp sensor. Is there any additional setup that has to be performed? I can't find anything in the datasheet or accompanying app note. Thanks, mauricio
  12. M

    Timer interrupt, or other way to read SPI consistently on Teensy3.0?

    Np. The weak reference gets overridden at link time when you implement in your main code, so no need to change that portion. I added the following: void blankFeature() { } void setupFrameTimer(void) __attribute__ ((weak, alias("blankFeature"))); and added a call to setupFrameTimer() in...
  13. M

    Timer interrupt, or other way to read SPI consistently on Teensy3.0?

    Hi, What I did was modify mk20dx128.c to make a call to a weak reference to a feature that I defined in my main arduino code. It worked well and required minimal change. Take a look at the PIT section in the datasheet posted at pjrc. It shows how to define the load value for the timer very...
  14. M

    Timer interrupt, or other way to read SPI consistently on Teensy3.0?

    Thanks for the code! Worked great. Can't wait for the ISR macros but it's been an educational experience. mauricio
  15. M

    3.0 cli

    Hi, First post here. Thanks for the great work. I'm interested in using the cli for 3.0 but don't see the update on the cli page. Is there a version forthcoming? How does teensyduino bring up and open the loader? Would it be possible to use that mechanism to streamline uploading? Thanks...
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