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Commit b8cfae5

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Merge pull request #1029 from arduino/karlsoderby/nano-rp2040-patch-may23
[NANO-RP2040] Update Microphone Docs
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‎content/hardware/03.nano/boards/nano-rp2040-connect/essentials.md‎

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</EssentialElement>
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<EssentialElement title="PDM" type="library" link="https://www.arduino.cc/en/Reference/PDM">
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The PDM library allows you to use PDM (Pulse-density modulation) microphones, like the MP34DT05.
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The PDM library allows you to use PDM (Pulse-density modulation) microphones, like the MP34DT06JTR.
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</EssentialElement>
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<EssentialElement link="https://github.com/arduino-libraries/Arduino_LSM6DSOX" title="Arduino_LSM6DSOX" type="library">

‎content/hardware/03.nano/boards/nano-rp2040-connect/features.md‎

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<Feature title="Omnidirectional Microphone" image="microphone">
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The Nano RP2040 connect comes with the MP34DT05 microphone. It allows you to capture and analyze sound in real time and can be used to create a voice interface to control your peripherals through sound.
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The Nano RP2040 connect comes with the MP34DT06JTR microphone. It allows you to capture and analyze sound in real time and can be used to create a voice interface to control your peripherals through sound.
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<FeatureLink variant="primary" title="Documentation" url="/tutorials/nano-rp2040-connect/rp2040-microphone-basics"/>
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<FeatureLink variant="secondary" title="Library" url="/learn/built-in-libraries/pdm"/>

‎content/hardware/03.nano/boards/nano-rp2040-connect/tech-specs.yml‎

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Secure element: ATECC608A-MAHDA-T Crypto IC
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Sensors:
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IMU: LSM6DSOXTR (6-axis)
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Microphone: MP34DT05
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Microphone: MP34DT06JTR
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Communication:
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UART: RX/TX
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I2C: A4 (SDA), A5 (SCL)
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‎content/hardware/03.nano/boards/nano-rp2040-connect/tutorials/rp2040-01-technical-reference/rp2040-01-technical-reference.md‎

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## Microphone
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![The MP34DT05 microphone sensor.](assets/MP34DT05-NANORP2040CONNECT.png)
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![The MP34DT06JTR microphone sensor.](assets/MP34DT06JTR-NANORP2040CONNECT.png)
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### MP34DT05
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### MP34DT06JTR
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The **MP34DT05** is a compact, low-power omnidirectional digital MEMS microphone with an IC interface. It has a 64 dB signal-to-noise ratio, is capable of sensing acoustic waves and can operate in temperatures of -40 °C to +85 °C.
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The **MP34DT06JTR** is a compact, low-power omnidirectional digital MEMS microphone with an IC interface. It has a 64 dB signal-to-noise ratio, is capable of sensing acoustic waves and can operate in temperatures of -40 °C to +85 °C.
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### PDM Library
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To access the data from the MP34DT05, we need to use the [PDM](https://www.arduino.cc/en/Reference/PDM) library that is included in the **Arduino Mbed OS Nano Boards** core. If the core is installed, you will find an example that works by browsing **File > Examples > PDM > PDMSerialPlotter**.
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To access the data from the MP34DT06JTR, we need to use the [PDM](https://www.arduino.cc/en/Reference/PDM) library that is included in the **Arduino Mbed OS Nano Boards** core. If the core is installed, you will find an example that works by browsing **File > Examples > PDM > PDMSerialPlotter**.
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- **Please note:** The sampling frequency in the PDMSerialPlotter example is set to 16000 Hz. If the microphone appears to not be working (monitor is printing a value of -128), try to change this rate to 20000 Hz. You can change this at the top of the PDMSerialPlotter example sketch, as shown in the example below:
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‎content/hardware/03.nano/boards/nano-rp2040-connect/tutorials/rp2040-microphone-basics/rp2040-microphone-basics.md‎

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title: 'Reading Microphone Data on Nano RP2040 Connect'
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difficulty: intermediate
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compatible-products: [nano-rp2040-connect]
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description: 'Learn how to read data from the MP34DT05 microphone, and how to use the data to turn ON or OFF the built-in RGB.'
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description: 'Learn how to read data from the MP34DT06JTR microphone, and how to use the data to turn ON or OFF the built-in RGB.'
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tags:
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- Microphone
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- RGB
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## Introduction
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The Nano RP2040 connect comes with the **MP34DT05** microphone, which can be used to record audio. In this tutorial, we will setup a basic application that simply turns ON or OFF the built in RGB LED whenever a loud noise is recorded (for example snapping our fingers).
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The Nano RP2040 connect comes with the **MP34DT06JTR** microphone, which can be used to record audio. In this tutorial, we will setup a basic application that simply turns ON or OFF the built in RGB LED whenever a loud noise is recorded (for example snapping our fingers).
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>**Note:** if you need help setting up your environment to use your Arduino Nano RP2040 board, please refer to [this installation guide](/software/ide-v1/tutorials/getting-started/cores/arduino-mbed_nano).
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- [PDM](https://www.arduino.cc/en/Reference/PDM) library installed.
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- [Arduino Nano RP2040 Connect](https://store.arduino.cc/nano-rp2040-connect).
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## The MP34DT05 Microphone
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## The MP34DT06JTR Microphone
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![The MP34DT05 microphone.](assets/rp2040-microphone-img-00.png)
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![The MP34DT06JTR microphone.](assets/rp2040-microphone-img-00.png)
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Microphones are components that convert physical sound into digital data. Microphones are commonly used in mobile terminals, speech recognition systems or even gaming and virtual reality input devices.
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The MP34DT05 sensor is a ultra-compact microphone that use PDM (Pulse-Density Modulation) to represent an analog signal with a binary signal. The sensor's range of different values are the following:
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The MP34DT06JTR sensor is a ultra-compact microphone that use PDM (Pulse-Density Modulation) to represent an analog signal with a binary signal. The sensor's range of different values are the following:
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- Signal-to-noise ratio: 64dB
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- Sensitivity: -26dBFS ±3dB
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- Temperature range: -40 to 85°C
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If you want to read more about the MP34DT05 sensor you can take a look at the <a href="https://content.arduino.cc/assets/Nano_BLE_Sense_mp34dt05-a.pdf" target="_blank">datasheet</a>.
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### Circuit
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This tutorial requires no additional circuit. You will only need to connect the board to a computer through a Micro USB cable.

‎content/hardware/03.nano/boards/nano-rp2040-connect/tutorials/rp2040-python-api/rp2040-python-api.md‎

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time.sleep_ms(100)
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```
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### Microphone (MP34DT05)
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### Microphone (MP34DT06JTR)
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Below example can be used with OpenMV's frame buffer window (top right corner).
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