Member Since: April 17, 2010

Country: United States


Spoken Languages

English Learning Nihongo(japanese)

Programming Languages

Visual Basic Visual Basic .net Normal Basic PHP(i love that language) EXSE(open source language i designed)


  • What’s the float voltage of this thing? They say every 0.1v reduction doubles lifespan in li ion.

  • What is really needed is some kind of hobbyist oriented equivalent of USB. The beauty of vernier is the plug and play compatibility. We need a standard way for a device to say “I am a sensor, I output the temperature and humidity”. We need to get devices talking to each other. If something can be networked, it never really gets obsolete. There’s always a part for it to play in a larger system. USB is great for keyboards and mice and all the other stuff USB is used for. But we need something open. Something cheap to implement. Something that anyone can make a device for without buying a VID. Something with a bus topology instead of a point to point with hubs. Preferably something all-digital. Something with decent range. Think of the possibilities if hobbyists agreed on a standard protocol that projects should speak. Then there would be a system like vernier, but with hundreds of modules available!

  • Im pretty sure light going in the sides wont go along the fibre and out the end, If it was that easy we wouldnt need those special light concentrating fibres that some university is doing for cheap soar power supposedly

  • There are so many good uses for this. But i agree, you could hurt yourself in short order.
    Remember to always use multiple redundant safety resistors and don’t use anything connected to AC mains unless you know what your doing. really. just don’t. if you must,be sure the output is isolated!!!
    anything across the chest or head is a dangerous(unless its a sensor not a shocker)
    but otherwise, great product!

  • I believe to infringe a product need only have all the elements of ONE claim. i think each claim is legally enforceable independent of any other claims.

  • The question about battery charge time should say “in theory” or “Under ideal conditions” because inefficiencies would most likely extend the charge time a little.
    Other then that, i got them all pretty much right except for a few of the number format conversions.
    Great Quiz SparkFun! Thanks!

  • @Ad
    I don’t see any problem with your setup at all.
    But i would like to point out that if you use a SPI connection, you are always “writing” something to the sensor(the clock line of course) so the precautions are needed.

  • EEPROM wears out in in a finite number of writes(under a few million for a lot of chips).
    lol i was just thinking about designing a MCU of this that ran at audio frequencies but used multiple wavetables at independent speeds that could be mixed, all under serial control.

No public wish lists :(