Camera&Audio Media Board - FireBeetle Covers - audio module with camera for ESP32 - OV7725 - DFRobot DFR0498

Camera&Audio Media Board - FireBeetle Covers from DFRobot is a module designed for Internet of Things (IoT) solutions, with an emphasis on multimedia support (the module does not enable video recording and transmission). The board is equipped with an audio module and interfaces for connecting the IIS NAU8822 codec , camera , SD card (SDIO), headphones and microphone. The set also includes an OV7725 camera with a resolution of 640 x 480 px. The whole thing is intended for use with FireBeetle ESP32 boards.

Camera&Audio Media Board is a perfect solution for those who want to easily implement multimedia in their IoT projects . It will work well as a complementary element in applications related to monitoring, sound recording or the creation of broadly understood interactive applications.

Camera&Audio Media Board - FireBeetle Covers - audio module included with the OV7725 camera - for ESP32 - DFRobot DFR0498.

The module does not enable video recording and transmission.

• Multimedia for IoT : the module was created to support multimedia in broadly understood IoT solutions.
• NAU8822 IIS Codec Support : Allows you to connect and control the NAU8822 codec, which can support both 12W/8Ω BTL speaker and 40mW/16Ω headphones.
• Camera interface : the module has an interface for connecting the camera included in the kit, which can be used as a data input device.
• Microphone interface : the board is also equipped with a mini MIC interface, enabling the recording of sounds, which can then be saved on a microSD card (not included).
• DAC support : NAU8822 offers support for DAC audio signal acquisition and a programmable microphone amplifier.

• Operating voltage: 3.7V to 5.5V (VCC)
• Output voltage: 3.3V
• Transducer: NAU8822
  • DAC: 94 dB SNR, -84 dB THD
  • ADC: 90 dB SNR, -80 dB THD
  • Integrated BTL speaker amplifier: 1 W / 8 Ohm
  • Integrated headphone amplifier: 40 mW / 16 Ohm
  • Integrated programmable microphone amplifier
  • Typical sampling rate: 8 kHz, 48 kHz, 96 kHz, 192 kHz
  • Video interface: PCM and I2S
• Microphone: electret
  • Exit: analog
  • Direction: omnidirectional
  • Frequency range: 100 Hz to 15 kHz
  • Sensitivity: -43 dB ± 5 dB at 94 dB SPL
  • Signal-to-noise ratio: 58 dB
• User-defined button: tested by IO16(DI)
• RESET button: x1
• microSD card slot:
  • Bus interface: SDIO protocol
  • Default baud rate: max. 10MHz
  • Baud rate: 20MHz

Arrangement of elements on the board.

Camera&Audio Media Board - FireBeetle Covers.

The manufacturer stipulates that the data listed below are for informational purposes only; some functions cannot be implemented by ESP32 now.

• Sensor: OV7725
• Resolution: 640 x 480 px
• Optical size: 1/6"
• Viewing angle: 25°
• Interface: standard SCCB
• Output pixel format: Raw RGB, RGB (RGB4:2:2, RGB565/555/444), YCbCr (4:2:2)
• Image size: VGA, QVGA and CIF up to 40 x 30 px
• VarioPixel Subsampling
• Automatic image control: automatic exposure control (AEC), automatic gain control (AGC), automatic white balance (AWB), automatic bandpass filter and automatic black level calibration (ABL)
• Image quality control: saturation, tone, gamma, clarity and anti-noise
• ISP: noise reduction and defect calibration
• Lens shading correction
• Automatic saturation adjustment
• Frame synchronization
• Constant focus

• Camera&Audio Media Board module - 1 piece
• OV7725 camera - 1 piece
• Male connector 1x 18pin - 2.54 mm - 2 pieces
• Female connector 1x18pin - 2.54 mm - vertical - 2 pieces

The set also includes a camera.

• Manufacturer's website: DFRobot DFR0498
• User Guide
• System diagram
• OV7725 technical documentation
• Technical documentation NAU8822L
• 3D models