> **Source:** Core Electronics is an Australian maker-electronics retailer and manufacturer based in Newcastle, NSW, run by a team of makers and educators. We design and manufacture our own product lines (PiicoDev, CE originals) and are official retailers for iconic maker and industrial brands including Raspberry Pi, Arduino, Adafruit, SparkFun and DFRobot. Orders ship Australia-wide from our Newcastle warehouse. Prices are in AUD and include GST. Pricing, stock and dispatch on this page are generated from the store's live catalog. Full machine-readable index: https://core-electronics.com.au/llms.txt

# Gravity: I2C RGB LED Colorful Button Module

**Type:** Product page · **SKU:** DFR0991 · **Brand:** [DFRobot](https://core-electronics.com.au/brands/dfrobot-australia)
**Page:** https://core-electronics.com.au/gravity-i2c-rgb-led-colorful-button-module.html ([markdown](https://core-electronics.com.au/gravity-i2c-rgb-led-colorful-button-module.html.md))

This I2C button module with RGB LED not only supports reading button status like conventional ones, but also controlling RGB LED color and switching...

## Pricing

- **Price:** $16.70 (inc GST) — $15.18 AUD, exc GST
- **Quantity discounts:** 6+ $14.42 (exc GST) · 12+ $13.82 (exc GST)

## Availability & dispatch

- Available with a lead time — expect dispatch between Sep 07 and Sep 11.

## How to buy

- **Build a cart:** compose `https://core-electronics.com.au/cart/link?items=DFR0991:1` (comma-separated SKU:qty pairs) and share the link. Opening it shows a confirmation page with live pricing and stock before anything is added to the cart.
- **Verify the cart first:** fetch `https://core-electronics.com.au/cart/link/DFR0991:1.md` for live line prices (inc & exc GST, quantity discounts applied), stock and dispatch estimates, and totals. Append `/to/{AU-postcode}` (or `/to/{country-code}:{postcode}`) before `.md` for delivery options and prices to that destination. Unknown, retired, or out-of-stock SKUs are flagged. (Query form `cart/link.md?items=...` also works but some robots parsers refuse query strings here.)
- **Checkout** is completed on-site and includes a captcha at the payment step. Share the cart link; checkout takes it from there.
- **Search the catalogue:** `https://core-electronics.com.au/search/{query}.md` (URL-encode the query; pages 2-3 at `search/{query}/{page}.md`; `search.md?q=` also works)
- **Payment methods, purchase orders, policies and contact details:** https://core-electronics.com.au/llms.txt
## Description

This is an I2C button module with RGB LED. The module not only supports reading button status like conventional ones, but also controlling RGB LED color and switching on/off the light independently, which could create more visual and interactive experiences for your projects. For example, when the system prompts users to press the button, the RGB light blinks in green; when the button is pressed, the light turns red.

This module has an onboard 3-bit DIP switch for setting 8 different I2C addresses, which means up to 8 such button modules can be cascaded together without occupying additional ports.

**![Gravity: I2C RGB LED Button Module](https://core-electronics.com.au/attachments/localcontent/2_65748ffeb1f.jpg)**

###  Features

5. High-quality button, mechanical keyboard-like tactile feedback
6. Soft and even color light
7. Independent control of RGB LED, eight I2C addresses can be set
8. Double I2C ports for simple cascade
9. On-board interrupt interface for highly real-time tasks
###  Applications

11. Simulated Elevator Buttons
12. Mini Matrix Keyboard
13. IoT Projects
14. DIY Electronic Projects
###  Specification

16. Adjustable Color Range: R: 0-255, G: 0-255, B: 0-255
17. Maximum Cascading Modules: 8
18. Operating Voltage: DC 3.3V-5V
19. Button Travel Distance: 2.2±0.2mm
20. Button Life: 200,000 continuous presses
21. Interrupt Mode: the interrupt interface outputs HIGH when the button is pressed
22. Communication: I2C
23. Connector: PH2.0-4P (Gravity standard), 2.54-5P pin header
24. Dimensions: 37mm×32mm×19.5mm/1.46×1.26×0.77"
###  Documents

26. [Product wiki](https://wiki.dfrobot.com/SKU_DFR0991_Gravity_I2C_RGB_LED_Button_Module)
27. [STP 3D File](https://core-electronics.com.au/attachments/localcontent/DFR0991_STP3DFile_13616ccde46.zip)
28. [2D\_CAD](https://core-electronics.com.au/attachments/localcontent/8afcd3e608725ef2c489bad79ee8f297_75031aa7529.png)
29. [Circuit Schematics](https://core-electronics.com.au/attachments/localcontent/90a373be4582043cb32422843aa0ee25_16456b5dee0.pdf)
###  Parts List

31. Gravity: I2C RGB LED Button Module × 1
32. Gravity-4P I2C/UART Sensor Cable × 1

## Images

- [Product image 1](https://core-electronics.com.au/media/catalog/product/D/F/DFR0991-1.jpg)