DFRobot
Gravity:Analog Grayscale Sensor For Arduino
The Gravity Analogue Grayscale Sensor measures reflected light intensity, outputting an analogue value that ranges from black (low) to white (high). It uses ...
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The Gravity Analogue Grayscale Sensor measures reflected light intensity, outputting an analogue value that ranges from black (low) to white (high). It uses a photocell paired with an integrated white LED to illuminate the surface being measured, making it effective for detecting surface brightness and colour differences.
Common applications include line-following robots, automatic lighting systems that respond to ambient light levels, and simple optical data transmission. The Gravity interface makes it easy to connect to Arduino and compatible boards without soldering.
Key Features
- Grayscale Detection – Measures reflected light from black to white surfaces
- Onboard LED – Integrated white LED illuminates the target surface
- Analogue Output – Continuous voltage output proportional to reflected light
- Gravity Interface – 3-pin analogue connector for plug-and-play use
- 3.3–5 V Compatible – Works with both 3.3 V and 5 V logic boards
- Immersion Gold PCB – Durable, corrosion-resistant surface finish
Specifications
- Supply Voltage – 3.3–5 V
- Interface – Analogue
- Dimensions – 22 × 30 mm
Package Contents
- 1× Analogue Grayscale Sensor V2
- 1× Analogue cable
Ideal For
- Line-following robots
- Automatic lighting control
- Surface brightness detection
- Simple optical communication experiments
Resources
Jargon buster
Plain-language definitions for the technical terms used above.
- Gravity
- Gravity is DFRobot’s plug-in connector system for sensors, motors and modules, using standard cables to reduce loose jumper wiring. It matters because Gravity-compatible parts can connect directly to these ports, while non-Gravity parts may need adapters or manual wiring.
- LED
- A light-emitting diode (LED) is a small electronic component that emits light when current flows through it in the correct direction. Because it only conducts one way, its polarity matters, and a through-hole LED must be soldered the correct way around to light up.
- PCB
- A printed circuit board (PCB) is a board, usually rigid, with etched copper tracks that connect electronic components together without loose wiring. Components are mounted on the board and signals route between them through the copper layout.
- photocell
- A light-sensitive component whose electrical resistance changes with the amount of light falling on it. It matters when choosing or using light sensors, automatic lights, or brightness-detecting circuits because its response speed, resistance range, and sensitivity affect how reliably it detects light levels.
Find this product in
Brands
Sensors & Input
Supplier page — dfrobot.com
Supplier Description · 570.1 KB · Click any page to view full size
DFR0022 analog grayscale sensor schematics V1.0
Schematic · 93.8 KB · Click any page to view full size
Related Tutorials
Free guides on learn.littlebird.com.au
