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Thread: NST3.2 (Not So Teensy 3.2)

  1. #1

    NST3.2 (Not So Teensy 3.2)

    Hi there,

    This is a fully functioning prototype.

    It has identical features, pinout, and dimensions as this (assembled):
    https://www.tindie.com/products/logl...ut-revision-d/

    Except that:
    - The two central mounting holes are smaller and repositioned slightly.
    - The depth (height) is obviously less than the assembled breakout.
    - It sits completely flat on the bottom side.
    - The prototype (as pictured) doesn't have the rails v-scored (but they will be on all future boards).

    Right now, a Teensy 3.2 Breakout assembly sells for $52 (which includes the Teensy). I'd like to sell these units for $39 each, if I can raise over $3,900. If I raise over $29,000, they'll only cost $29 each, but that seems pretty far-fetched, so I'm not counting on it. If this works out, I'll probably have them for sale on an ongoing basis.

    Preorder link to follow shortly if there's any interest. Let me know what you think.

    Thanks,
    Dan

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  2. #2
    Senior Member+ defragster's Avatar
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    That looks nice Dan - except for those big ugly - but functional - switches

  3. #3
    Quote Originally Posted by defragster View Post
    That looks nice Dan - except for those big ugly - but functional - switches
    Thanks! Maybe I should add some solder jumpers too, so the switches could be omitted as an option.

  4. #4
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    Quote Originally Posted by loglow View Post
    Thanks! Maybe I should add some solder jumpers too, so the switches could be omitted as an option.
    This sounds like a good idea - for hobbyists, they can be trusted with the switches, but speaking as a commercial user, I'd be worried that my customers can mess about with the switches (either accidentally or purposefully).

  5. #5
    Senior Member+ defragster's Avatar
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    Solder jumpers would probably be as sensible - as it would be rare to change and would not want it to change in use.

    Those are not through pin based on bottom pic - maybe smd flat switches

  6. #6
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    Quote Originally Posted by loglow View Post
    Preorder link to follow shortly if there's any interest. Let me know what you think.

    I look forward to the preorder link.

  7. #7
    Quote Originally Posted by Cosford View Post
    This sounds like a good idea - for hobbyists, they can be trusted with the switches, but speaking as a commercial user, I'd be worried that my customers can mess about with the switches (either accidentally or purposefully).
    I'm leaning toward removing the switches entirely and having only solder jumpers in place of them.

    Default configuration would be: VIN-VUSB = ON (cut trace to turn off), USB-HOST = OFF (solder the pads to turn on).

    Do people have any thoughts about the bus rails? Eg. Permanent? V-scored? None? Etc.

  8. #8
    Senior Member+ defragster's Avatar
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    Looking at Tindie the boards with them snapped off look nice. Wasn't sure how useful they would be - common usage? I'd see using the board with them off, though having a couple of spare GND and 3V3 locations would be useful. GND someplace would be easy - not sure about PWR?

  9. #9
    Quote Originally Posted by defragster View Post
    Looking at Tindie the boards with them snapped off look nice. Wasn't sure how useful they would be - common usage? I'd see using the board with them off, though having a couple of spare GND and 3V3 locations would be useful. GND someplace would be easy - not sure about PWR?
    The rails are especially useful in situations where you want to connect a SVG (signal, voltage, ground) header/cable.

  10. #10
    Senior Member+ defragster's Avatar
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    Quote Originally Posted by loglow View Post
    The rails are especially useful in situations where you want to connect a SVG (signal, voltage, ground) header/cable.
    That was all I could think of with no other connect area (like breadboard rows). So then it seems V-score would probably be the bigger usage to remove them - even on one side when only using 5 to 7 or fewer of them on the other.

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