Member #40615

Member Since: May 30, 2008

Country: United States

  • Product SEN-08630 | about 11 months ago

    The regulator on these is a surface-mount linear regulator, which theoretically is good all the way up to 21 volts or so, as long as you stay within heat limits. These take very little power, and my project had 18 volts handy, so that’s what they’re getting. It works great.

  • Product SEN-08630 | last year

    It has a built-in voltage regulator, you will have to jumper past it if you want to run this off of 5 volts or lower. Also be mindful of the pinout. Go by the location of the wires because the color of wires is COMPLETELY inconsistent. (The ones I have don’t just have a different order, they don’t even have all the same colors…)

  • Product SEN-10701 | about a year ago

    I am only starting to play with these myself, but you may be giving it too large a time slot.

    It’s like a photo film. The capacitance is how sensitive it is – the lower the capacitance, the more sensitive it is. The integration time is the exposure time. So, make it a less sensitive ‘film’ by giving it more capacitance, and give it less exposure by reducing the time slot, and you should get lower values.

  • Product SEN-10701 | about a year ago

    I discovered, while soldering pins to this board, that the sensor has a bluish optical coating on it that can be damaged if you are careless.

  • Product SEN-11282 | about a year ago

    The higher the sampling rate, the lower the accuracy, but I expect it’d read gross changes like that pretty well.

  • Product SEN-11282 | about a year ago

    I’m not sure a filter makes much sense or difference here. Not a lot of point finessing out the fine details of the signal when the data you want is SUPPOSED to be a flat line. It’s a barometer, not a microphone.

    Considering it’s a little chip, not a computer, I doubt it’s anything fancier than sum(n)/n.

    I’ve verified to my satisfaction that the part is as accurate as they claim, anyway. Took thousands of samples and did statistics, and the numbers I got fit the specifications to the nose.

  • Product SEN-11282 | about a year ago

    I don’t think it would detect a few inches reliably. When used to maximum accuracy it’s not all that fast, either.

  • Product SEN-11295 | about a year ago

    These devices have no register numbers, unlike many 7-bit I2C devices. They will happily ignore the register index you give it, fortunately, so if you just read 4 bytes from address 0x27 register 0, you get the data.

  • Product WIG-09228 | about a year ago

    That’d need 150Hz sampling anyway…

  • Product COM-09089 | about a year ago

    My scope would show a sine at 20Mhz, since it would only be fast enough to show the primary frequency, not the edges. Show a slow frequency and it’ll be square.

No public wish lists :(