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  1. I'm interested in where this goes. I've been...

    I'm interested in where this goes. I've been looking at doing something similar with the Isolated 12V supplies and a 5V switching supply for the Teensy, but including 2 CAN transceivers. I use them...
  2. Have you tried to get it working without the...

    Have you tried to get it working without the iCoupler in the mix?
  3. Sorry, the "Ok, got it" was the all clear, it...

    Sorry, the "Ok, got it" was the all clear, it works fine. I'll have to crack the NVIC section of the manual to understand the details better. The detach/attach process seems to add a reasonable...
  4. Ok, got it . . . I had assumed attachInterrupt...

    Ok, got it . . . I had assumed attachInterrupt disabled the IRQ for that pin while processing the ISR automatically . . . I was confused by the fact I was only getting a single extra read (one of the...
  5. I thought the interrupt was automatically masked...

    I thought the interrupt was automatically masked by attachInterrupt . . . it consistently only triggers one extra reading per DOUT going low outside the function. I've used both LOW and FALLING as...
  6. attachInterrupt issue - function seems to be called twice

    I've been playing around with some analog devices ADCs (SPI parts). One that I'm fairly familiar with is the AD7794. However, I've never used it in continuous read mode. (Teensy 3.0, Teensyduino...
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    Were you able to make any progress on this?

    Were you able to make any progress on this?
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    I'm thinking that instead of 3 instrumentation...

    I'm thinking that instead of 3 instrumentation amps + filters + using the Teensy's ADC, why not a 3 channel differential programmable gain ADC - might be a lower total component cost - then your...
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    So are you saying the the waveform in the graph...

    So are you saying the the waveform in the graph is created from the data you wrote to the SD card rather than observed by a scope? If you don't have a scope, what gets written to the SD card if you...
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    What kind of decoupling caps do you have at the...

    What kind of decoupling caps do you have at the SD card? I'm assuming the noise you're seeing is due to the write current on the flash, rather than SPI communication . . .


    Edit: just saw your...
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    How are you powering the SD card?

    How are you powering the SD card?
  12. Did you try using AGND rather than GND for the...

    Did you try using AGND rather than GND for the pot/fader (connected directly to the AGND pin rather than through a bus)?
  13. Ya, I typo'd the 470 uF . . . was meant to read...

    Ya, I typo'd the 470 uF . . . was meant to read 470 nF . . . uF would be way too laggy. On the other hand, it's worth playing with the damping effect you get with the caps (noise aside) to help a...
  14. Are you using analog ground (AGND) or digital...

    Are you using analog ground (AGND) or digital ground (GND)? How much noise are you seeing and how many bits of resolution do you need / are you using? On my 10k pots (PS2 thumbsticks, for example)...
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    I'll be in the same place as my rc gear mid next...

    I'll be in the same place as my rc gear mid next week - I can do some testing then . . .
  16. Thread: gameduino 2

    by adeptrc
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    Not sure if anyone's been playing with the...

    Not sure if anyone's been playing with the hardware yet, but I have a couple of Gameduino 2's and everything works great out of the box with the Teensy 3.Xs (I haven't connected the accelerometer...
  17. I caught that - was thinking it might pair well...

    I caught that - was thinking it might pair well with the Teensy, but then again, I need to look at the full Bluetooth spec - I think it's a 'peripheral' only device, which I think means it can't play...
  18. Did anyone catch this announcement: ...

    Did anyone catch this announcement: ...
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    ;) I'm an EE . . . I read and think datasheets...

    ;) I'm an EE . . . I read and think datasheets and schematics . . . and was in an aircraft far away from a physical board . . .
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    Or just pull/clip pin 4 so it doesn't contact the...

    Or just pull/clip pin 4 so it doesn't contact the adapter board and solder in a jumper wire across to the pin you want to use as CS . . .
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    Paul, the 'electrical connections' section is...

    Paul, the 'electrical connections' section is great. It was an either/or type question - I don't need the schematic if I know the pins - I was just looking for a quick reference without tracing the...
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    WIZ820_SD_ADAPTOR pinout/schematic

    I must be missing something obvious - is there a pinout/schematic for the WIZ820_SD_ADAPTOR posted on the site somewhere?

    Thanks,

    Alistair
  23. Thanks for the detailed response. I've taken a...

    Thanks for the detailed response. I've taken a quick look through your links - nice work.

    I think I'll pick up the Nordic Dev kit, and maybe the Laird one as well, just to feel it out (I like the...
  24. Bluetooth Low Energy (BLE) - Laird BL600 module (Nordic Semi nRF51822 Cortex M0)

    Has anyone played with this particular BLE module yet? I see all kinds of potential for the nRF51822 in the context of a Teensy 3.x(RF/++)/spi BLE module, as well as a stand-alone low power wireless...
  25. Thread: demand

    by adeptrc
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    Ya, I think 'demand' better translates to...

    Ya, I think 'demand' better translates to 'question' in this instance.

    Regardless, providing an idea of how many 'pixels' (rgb LEDs) you intend to use, and what the physical layout of the system...
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    ... ok, so I'm not helping you out with your...

    ... ok, so I'm not helping you out with your coding issues ...

    but, I watched the video you made - do you have any pictures / writeup on how you built the wall, and what it looks like when it's...
  27. He's referring to having no control over the...

    He's referring to having no control over the power state of the Mini54 on the Teensy 3.0 board, and that the power consumption of the board when the K20 in a low power state corresponds to the power...
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    Did you change the led pin to pin 13?

    Did you change the led pin to pin 13?
  29. SDI-12 - anyone worked with Teensy3 and SDI-12 sensors?

    It's been a few weeks since I've read the UART sections in the datasheets . . . but from RS485 half duplex discussions, and a vague memory of the UART being capable of inverted operation, it would...
  30. A rectifier is just a diode bridge - and a...

    A rectifier is just a diode bridge - and a typical diode requires 0.3V across it to start conducting - so the signal from your pickup never makes it past the rectifier. Amplify the signal first (you...
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    On a slightly different track (combining the best...

    On a slightly different track (combining the best of both worlds, and making two steps one . . .):

    I use socat to locally access the remote ttyACM0 of my Teensy 3.0 connected to an RPi (socat -d...
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