DFRobot FireBeetle Covers Camera & Audio Media Board
Integrates interfaces for camera, SD card, earphone, and microphone
Supports MP3 playback, recording, and photo capture with FireBeetle ESP32
Auto image control and quality enhancements with OV7725 camera
Delivers crystal-clear audio with NAU8822 CODEC
Mini MIC input for robust voice recording
The DFRobot FireBeetle Covers Camera & Audio Media Board is a multimedia device designed for Internet of Things (IoT) applications. It integrates interfaces for connecting a NAU8822 CODEC IIS, OV7725 camera, SD card, earphone, and microphone. The board supports direct connections and features a mini MIC input interface, enabling functionalities such as MP3 playback, recording, and photo capture when paired with FireBeetle main boards like the ESP32. Additionally, it can function as an Internet radio or cloud image recognition device when connected to the Internet.
Note: This media board only supports the FireBeetle ESP32 main board and does not support video shooting and transmission. Handle the cameras flat ribbon cable with care.
1x FireBeetle Covers-Camera&Audio Media Board (V1.0)
Camera OV7725: (data as below is just for reference; some functions could not be realized by ESP32 now).
Photosensitive/Light-sensitive Array: 640*480
Optical Size: 1/6"
Angle of View: 25°
SCCB Standard Interface
Output Pixel Format: Raw RGB，RGB(RGB4:2:2 ,RGB565/555/444)，YCbCr (4:2:2)
Image Size: VGA, QVG, A, and CIF to 40x30
VarioPixel Subsampling
Auto Image Control: auto exposure control (AEC), auto gain control (AGC), auto white balance (AWB), auto band filter, and auto black level (ABL) calibration.
Image Quality Control: saturation, tone, gamma, clarity, and anti-interference
ISP: noise reduction and defect calibration
Lens Shading Correction
Auto Saturation Adjustment
Frame Synchronization
Fixed-focus
NAU8822:
DAC:94dB SNR , -84db THD
ADC:90dB SNR , -80dB THD
Integrated BTL loudspeaker drive: 1W at 8Ω
Integrated earphone drive: 40mW at 16Ω
Integrated programmable microphone amplifier
Typical Sampling Rate: 8KHz, 48KHz, 96KHz, 192KHz
Standard Video Interface: PCM and I2S
MIC:
Type: Electret Capacitor
Output: analog
Direction: omnidirectional
Frequency Range: 100Hz~15KHz
Sensitivity: -43dB ±5dB at 94dB SPL
Signal-to-noise Ratio: 58dB
