> **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: UART & I2C NFC Module

**Type:** Product page · **SKU:** DFR0231-H · **Brand:** [DFRobot](https://core-electronics.com.au/brands/dfrobot-australia)
**Page:** https://core-electronics.com.au/gravity-uart-i2c-nfc-module.html ([markdown](https://core-electronics.com.au/gravity-uart-i2c-nfc-module.html.md))

Gravity: UART & I2C NFC Module adopts NXP PN532, a highly integrated NFC communication controller, which supports various types of NFC smart cards or tags like the commonly used MIFARE Classic series and NTAG series in the market

## Pricing

- **Price:** $50.05 (inc GST) — $45.50 AUD, exc GST
- **Quantity discounts:** 6+ $43.23 (exc GST) · 12+ $41.41 (exc GST)

## Availability & dispatch

- Available with a lead time — expect dispatch between Aug 24 and Aug 28.

## How to buy

- **Build a cart:** compose `https://core-electronics.com.au/cart/link?items=DFR0231-H: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/DFR0231-H: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

Near Field Communication (NFC), also known as short-range wireless communication, is a short-range high-frequency wireless communication technology that allows non-contact point-to-point data transmission (within ten centimeters) to exchange data between electronic devices. . This technology evolved from contactless radio frequency identification (RFID) and is backward compatible with RFID. It was first developed by Sony and Philips, and is mainly used to provide M2M (Machine to Machine) communication in handheld devices such as mobile phones. Because of the natural security of near field communication, NFC technology is widely used in POS mobile payment, bus cards, bank cards, access cards, water cards and other occasions.

### Connection Diagram

![](https://image.dfrobot.com/image//data/DFR0231-H/Introduction/1.jpg)

**Gravity: UART & I2C NFC Module IIC connection diagram (Arduino UNO)**

![](https://image.dfrobot.com/image//data/DFR0231-H/Introduction/2.jpg)

**Gravity: UART & I2C NFC Module UART connection diagram (USB to UART+PC)**

![](https://image.dfrobot.com/image//data/DFR0231-H/Introduction/3.jpg)

**Gravity: UART & I2C NFC Module UART connection diagram (MEGA2560)**

### Features

- NXP highly integrated NFC controller
- Gravity I2C & UART composite interface, flexible use
- Support various kinds of mainstream NFC smart cards or tags
- Compatible with 3.3V/5V controller
 
### Specifications

- IC: NXP PN532
- Input Voltage (VCC) : 3.3V~5.5V
- Interface: Gravity I2C & UART (PH2.0-4P, Logic Level 0-3.3V)
- UART Baud Rate: 115200 bps
- I2C Address: 0x48
- Communication Frequency: 13.56 MHz
- Maximum Communication Distance: ≥10mm，depend on the size of the NFC card/tag
- Protocol Support: 
    - Reader/Writer Mode: ISO/IEC 14443A, ISO/IEC 14443B, MIFARE, FeliCa
    - Card Emulation Mode: ISO 14443A/MIFARE Classic 1K or 4K, FeliCa
    - Peer-to-Peer: ISO/IEC18092, ECM340
- Dimension: 110×50 mm / 4.33×1.97 in
- Weight: 20 g
 
### Documents

- [Product wiki](https://wiki.dfrobot.com/Gravity:%20I2C%20&%20UART%20NFC%20Module%20SKU:%20DFR0231-H)
- [More Documents](https://wiki.dfrobot.com/Gravity:%20I2C%20&%20UART%20NFC%20Module%20SKU:%20DFR0231-H#target_7)
 
### Shipping List

- 1 x Gravity: UART & I2C NFC Module
- 1 x Gravity-4P I2C/UART Sensor Wire
- 1 x JST-XH 2P Black Header
- 1 x MIFARE Classic NFC Tag Sticker (Round)

## Images

- [Product image 1](https://core-electronics.com.au/media/catalog/product/d/f/dfr0231-h-1.jpg)