Gravity I2C RGB LED Button Module

The Gravity module from DFRobot is a button with an RGB LED, both controlled via I2C. The microcontroller reads the button state and sets the colour and brightness of the LED independently, for example blinking green as a prompt and red after pressing. Eight addresses can be set with a 3-bit DIP switch, so up to 8 buttons run on the same bus. With two I2C connectors they are simply daisy-chained.

Note: The connection cable can be converted to male pins with a Dupont cable M-M, so that it also fits an Arduino UNO.

Recommended Accessories:

• Dupont Cables M-M 10cm 20 Pieces

Features:

• Button with a tactile feel like a mechanical keyboard
• RGB LED, colours 0 to 255 each, soft even light
• 8 I2C addresses via DIP switch, up to 8 modules on the bus
• Two Gravity I2C connectors for daisy-chaining
• Interrupt pin INT goes HIGH when pressed
• Pin header 2.54 mm 5-pin: D, C, +, -, INT

Application Examples:

• Replica elevator buttons and control panels
• Small keypads and game controls
• Acknowledge buttons with colour feedback

Documentation:

• DFRobot Wiki DFR0991 with Arduino examples
• Library DFRobot_RGBButton (GitHub)
• Schematic (PDF)
• Dimension drawing (PNG)

Technical Data:

• Manufacturer: DFRobot
• Manufacturer SKU: DFR0991
• Operating voltage: 3.3 to 5 V DC
• Colour range: R, G, B 0 to 255 each
• Interface: I2C
• Modules on the bus: at most 8
• Button travel: 2.2 ± 0.2 mm
• Button life: 200,000 presses
• Interrupt: INT outputs HIGH when pressed
• Connectors: PH2.0 4-pin (Gravity), pin header 2.54 mm 5-pin
• Dimensions: 37 × 32 × 19.5 mm
• Weight: 20 g

Scope of Delivery:

• 1× Gravity I2C RGB LED Button Module
• 1× Gravity I2C cable 4-pin, 30 cm (PH2.0 to Dupont female)