ElecFreaks
OV7670 Camera Module
The OV7670 is a compact VGA camera module based on the OmniVision OV7670 image sensor. It provides a single-chip VGA camera and image processor capable of up...
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The OV7670 is a compact VGA camera module based on the OmniVision OV7670 image sensor. It provides a single-chip VGA camera and image processor capable of up to 30fps at 640×480 resolution, with multiple output formats including RGB565, YUV, and raw RGB.
Controlled via the SCCB interface (I²C compatible), the sensor offers full control over image quality including gamma correction, white balance, saturation, and sharpness. Built-in ISP functions handle automatic exposure, gain control, white balance, and noise reduction.
Key Features
- VGA Resolution – 640×480 at up to 30fps
- Multiple Output Formats – RGB565/555/444, YUV/YCbCr 4:2:2, GRB 4:2:2, Raw RGB
- SCCB/I²C Interface – Full control over image processing parameters
- Built-in ISP – Automatic exposure, gain, white balance, noise reduction, and dead pixel compensation
- Low Power – 60mW at 15fps VGA YUV, <20µA sleep mode
- Flexible Resolution – Supports VGA, CIF, and sub-sampled sizes down to 40×30
- 50/60Hz Detection – Automatic flicker elimination
Specifications
- Sensor: OV7670
- Resolution: 640 × 480 (VGA)
- Max Frame Rate: 30fps (VGA)
- I/O Voltage: 2.5–3.0V (internal 1.8V LDO)
- Pixel Size: 3.6 × 3.6 µm
- Optical Size: 1/6"
- Field of View: 25°
- Sensitivity: 1.3V/(Lux·sec)
- SNR: 46dB
- Dynamic Range: 52dB
- Scan Mode: Progressive
- Operating Temperature: −30°C to 70°C
Ideal For
- Embedded vision and image capture projects
- Arduino and microcontroller camera applications
- Learning image processing and computer vision basics
- Low-power surveillance and monitoring
Jargon buster
Plain-language definitions for the technical terms used above.
- dynamic range
- Dynamic range describes how wide a span of values a sensor can measure, from very low to very high. For a light sensor, a wide dynamic range means it can work in dim indoor settings as well as bright sunlight without changing hardware.
- ISP
- In electronics, ISP usually means In-System Programming, a way to load firmware onto a microcontroller while it stays on the board (often via an ICSP header), or an Image Signal Processor, hardware that turns raw camera sensor data into usable images and offloads the main CPU. The surrounding context shows which meaning applies.
- lux
- Lux is the standard unit for measuring how much light falls on a surface, similar to how a light meter reports brightness. A sensor that outputs lux gives readings that are easier to compare between rooms, outdoor conditions, and different projects.
- microcontroller
- A microcontroller is a small computer on a single chip that runs a stored program and controls connected inputs and outputs such as buttons, sensors, displays and communication interfaces. In a device built around one, it is the part that executes the code and coordinates the device's behaviour.
- RGB
- Short for red, green and blue, the three primary colours of light that are mixed in varying amounts to make a wide range of colours. In electronics RGB can refer to an LED or pixel that blends these three colours, or to a colour signal or interface that carries separate red, green and blue channels.
- VGA
- VGA has two common meanings in electronics: as a resolution it usually refers to a 640 x 480 pixel image, which is modest detail suitable for basic display or inspection rather than high definition; as a connector it refers to the analogue 15-pin video output long used on computers and monitors. Check which sense a listing means.
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