This tiny breakout board features the ADMP401 MEMS microphone. One of the key advantages to this breakout and microphone is the bottom ported input. This means the microphone's input can fit flush against the enclosure of your project. Plus you will not have to deal with trying to solder the microphone's wacky footprint. Wootness!
The amplifier on the breakout has a gain of 67 and more than meets the bandwidth requirements of the mic. The amplifier's AUD output will float at one half Vcc when no sound is being picked up. The amplifier produces a peak-to-peak output of about 200mV when the microphone is held at arms length and is being talked into at normal conversational volume levels. So the AUD output can easily be connected to the ADC of a micro.
This skill defines how difficult the soldering is on a particular product. It might be a couple simple solder joints, or require special reflow tools.
Skill Level: Noob - Some basic soldering is required, but it is limited to a just a few pins, basic through-hole soldering, and couple (if any) polarized components. A basic soldering iron is all you should need.
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If it requires power, you need to know how much, what all the pins do, and how to hook it up. You may need to reference datasheets, schematics, and know the ins and outs of electronics.
Skill Level: Rookie - You may be required to know a bit more about the component, such as orientation, or how to hook it up, in addition to power requirements. You will need to understand polarized components.
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Based on 11 ratings:
2 of 3 found this helpful:
Mems microphone breakout works great and is easily modified to change gain and filter characteristics. Very very small, but plenty of signal. Only suggestions are to 1) silkscreen or etch in copper connection legend (e.g. "+, G, OUT" on primary side (too), and 2) use a non-obsoleted part for the mems. The ADMP401 is obsolete, so moving forward, I'd have to use something else. Neither of these are a big deal, just suggestions on a future refresh. Overall, I LOVE this thing!
Good Supplier Highly recommended.
0 of 1 found this helpful:
we monitor sea turtle nests here in Alabama. I want to see if I can bury it in the sand over the nest to hear when the eggs hatch and the hatchlings start to dig out. I assume it will need to be connected to an amplifier and loud speaker. Also D.C. power. If you have any suggestions, I would appreciate them. Thanks.
I used it in an arduino based sound level led project. I destroyed the first one when I used hot glue to mount it on the project. Glue covered up the hole and well ... that was it for that mems. I've had to get more creative in mounting it as it is small and does not have a mounting hole on the board.
It preforms extremely well and picks up the slightest sounds from across the room. Quit happy with the look and result.
Much better than the electret microphone. Easy to use and doesn't pick up too much noise.
I like to create sound reactive displays by using this microphone along with the FastLED display library. Most recently, I've recently updated my sound sampling routines to include squelch control, auto-levelling of the input signal, automatic gain control and more. It works great. Have also used it with basic sampling as well as a couple of FFT libraries. Just a great little microphone. Here's just one of many videos I've published using this microphone:
Oh, and the code is all open source.
The response time to send this device was 2 days. The device itself is more suited for my purposes than an adafruit competitor because the d.c. analog output is amplified, and sits at the mid Vcc point. Also there is no d.c. drift after power on.
Works very well, much better than condenser mics.