Skip to content
A FeatherWing for interfacing with the SparkFun Sound Detector board.
Branch: master
Clone or download
Fetching latest commit…
Cannot retrieve the latest commit at this time.
Permalink
Type Name Latest commit message Commit time
Failed to load latest commit information.
footprints.pretty
.gitignore
LICENSE.txt
README.md
SoundDetectorWing-cache.lib
SoundDetectorWing.fods
SoundDetectorWing.jpg
SoundDetectorWing.kicad_pcb
SoundDetectorWing.net
SoundDetectorWing.pdf
SoundDetectorWing.pro
SoundDetectorWing.sch
fp-lib-table

README.md

This repository contains KiCad 5 files for a FeatherWing board which lets you plug in a SparkFun Sound Detector and use it with a Feather. It runs the Sound Detector at 5V, and then has voltage dividers to convert the output signals to 3.3V, for use by the Feather.

Sound Detector FeatherWing

The "audio" analog signal is connected to feather pin A0, the "envelope" analog signal is connected to feather pin A1, and the "gate" digital signal is connected to the feather pin that I call F0. There is also a potentiometer connected to feather pin A2, which can be used, for example, if you want to implement an adjustable threshold in software (rather than using the Sound Detector's "gate" signal).

The board has three M2.5 mounting holes which should line up with the Feather, and two M3 mounting holes which should line up with the Sound Detector. There are optional places for two SMT decoupling capacitors.

SparkFun recommends running the Sound Detector at 5V, rather than 3.3V, so the Sound Detector is powered from the Feather's VUSB pin, to get a solid 5V supply. A consequence of this is that this FeatherWing will not work on battery power; you must have USB plugged in for power.

Bill of Materials

Ref Description MPN Digi-Key PN
C1, C2 CAP CER 10UF 10V X5R 0805 C0805C106K8PACTU 399-4925-1-ND
J1 16-pin male header 2.54mm
J2 12-pin male header 2.54mm
J3 CONN HDR 5POS 0.1 GOLD PCB PPPC051LFBN-RC S7038-ND
R1, R3, R5 RES 1.74K OHM 1/4W 1% AXIAL MFR-25FBF52-1K74 1.74KXBK-ND
R2, R4, R6 RES 3.3K OHM 1/4W 1% AXIAL RNMF14FTC3K30 S3.3KCACT-ND
RV1 POT 10K OHM THUMBWHEEL CERM ST 3352T-1-103LF 3352T-103LF-ND
You can’t perform that action at this time.