DFRobot Audio Analyzer Module

The Audio Analyzer module from DFRobot splits an audio signal into seven frequency bands with the MSGEQ7 chip and delivers the peak level of each band: 63 Hz, 160 Hz, 400 Hz, 1 kHz, 2.5 kHz, 6.25 kHz and 16 kHz. The Arduino reads the bands one after the other via an analog input, controlled via the Strobe and Reset pins. The audio signal comes, for example, from a jack socket to the L and R inputs.

Note: The connection cables can be converted to male pins with Dupont cables M-M, so that they also fit an Arduino UNO.

Recommended Accessories:

• Audio Breakout Board TRRS 3.5mm Jack Stereo
• Gravity IO Expansion Shield for Arduino V7.1
• Dupont Cables M-M 10cm 20 Pieces

Features:

• MSGEQ7 chip, seven frequency bands with peak value
• Analog output via Gravity connector (S, +, -)
• Control via the Strobe (S) and Reset (R) pins
• Audio inputs L and R, 3-pin each
• Library and example code for Arduino in the wiki

Application Examples:

• Light organ or LED spectrum that lights up with the music
• Robot that reacts to patterns in the music
• Sound-dependent controls

Documentation:

• Wiki DFRobot DFR0126
• Example for Arduino with wiring diagram (DFRobot)
• MSGEQ7 datasheet (PDF)
• Schematic (PDF)

Technical Data:

• Manufacturer: DFRobot
• Manufacturer SKU: DFR0126
• Marking: Analog Analyzer V2.0
• Chip: MSGEQ7
• Operating voltage: 5 V
• Frequency bands: 63 Hz, 160 Hz, 400 Hz, 1 kHz, 2.5 kHz, 6.25 kHz, 16 kHz
• Arduino pins in the example: Strobe to D4, Reset to D5, output to A5
• Dimensions: 30 × 20 × 12 mm
• Weight: 5 g

Scope of Delivery:

• 1× DFRobot Audio Analyzer Module
• 2× Analog cable
• 1× Digital cable