> For the complete documentation index, see [llms.txt](https://sharinghub-eng.kittenbot.hk/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://sharinghub-eng.kittenbot.hk/functional_module/powerbrick/rfid.md).

# RFID Reader Module

![](https://kittenbothk.readthedocs.io/en/latest/_images/10_04.png)

![](https://kittenbothk.readthedocs.io/en/latest/_images/10_05.png)

This is an RFID module that can read or write RFID cards.

The included RDID card has 1K memory, it has 16 sections with 3 blocks each.

![](https://kittenbothk.readthedocs.io/en/latest/_images/IMG_2583.GIF)

### Details

![](https://kittenbothk-eng.readthedocs.io/en/latest/_images/10_031.png)

### Specifications

* Voltage: 3V-5V
* Dimensions: 56mm X 56mm X 16mm
* Connector: 4Pin PH2.0
* Sensing Distance: Approximately 3cm

### Precautions

* Do not use the module in an environment with strong magnetic fields.
* Any metal between the reader and the card will cause it to fail to write or read.
* It may take sometime when writing a large amount of data into the RFID Card, please wait until the light goes off.
* Cards like Octopus Cards or ID Cards have encrypted data, the reader can only read the UUID of these cards.

### Connecting the module

#### Armourbit

***

Connect the RFID Module to the I2C port of Armourbit with a 4Pin cable.

![](https://kittenbothk.readthedocs.io/en/latest/_images/rfid_wire.png)

#### Robotbit

***

Connect the RFID Module to the I2C port of Robotbit.

```
Blue(A)->SCL, Green(B)->SDA
```

![](https://kittenbothk.readthedocs.io/en/latest/_images/rfid_wire1.png)

### MakeCode Coding Tutorial

![](https://kittenbothk-eng.readthedocs.io/en/latest/_images/mcbanner.png)

#### Load Powerbrick Extension:

#### Search "Powerbrick" in the search bar.

![](https://kittenbothk.readthedocs.io/en/latest/_images/powerbrick_search.png)

#### Or search the following link.

<https://github.com/KittenBot/pxt-powerbrick>

#### RFID Module Blocks

![](https://kittenbothk-eng.readthedocs.io/en/latest/_images/rfidblocks1.png)

#### Writing data onto RFID Card

{% embed url="<https://makecode.microbit.org/_XdP0Pye1rFA0>" %}

[Sample Program](https://makecode.microbit.org/_XdP0Pye1rFA0)

#### Reading Data from RFID card

{% embed url="<https://makecode.microbit.org/_TEz6D45qgDaa>" %}

[Sample Program](https://makecode.microbit.org/_TEz6D45qgDaa)

#### Reading the UUID

Every RFID card has an unique ID.

{% embed url="<https://makecode.microbit.org/_a6wiKdUqWaXL>" %}

[Sample Program](https://makecode.microbit.org/_a6wiKdUqWaXL)

#### Identification with UUID

We can use UUID to identify indicviduals.

{% embed url="<https://makecode.microbit.org/_c4rcrE76Tc6Y>" %}

[Sample Program](https://makecode.microbit.org/_c4rcrE76Tc6Y)

#### Makecode Vidoe

{% embed url="<https://www.youtube.com/watch?v=r1B6l7xK7So>" %}

#### Demo Video

{% embed url="<https://www.youtube.com/watch?v=oR1FwHu4lrM>" %}

### Extension Version and Updates[](https://kittenbothk-eng.readthedocs.io/en/latest/functional_module/PWmodules/powerBrickRFID.html#extension-version-and-updates)

There may be updates to extensions periodically, please refer to the following link to update/downgrade your extension.

[MakeCode Extension Update](/programming-platforms/makecode-tutorial/makecode-extension-updates.md)

### KittenBlock Coding Tutorial[](https://kittenbothk-eng.readthedocs.io/en/latest/functional_module/PWmodules/powerBrickRFID.html#kittenblock-coding-tutorial)

![../../\_images/kbbanner.png](https://kittenbothk-eng.readthedocs.io/en/latest/_images/kbbanner.png)

#### Load Powerbrick Extension[](https://kittenbothk-eng.readthedocs.io/en/latest/functional_module/PWmodules/powerBrickRFID.html#load-powerbrick-extension)

Select Powerbrick from the hardware column.

![../../\_images/addextension1.png](https://kittenbothk-eng.readthedocs.io/en/latest/_images/addextension1.png)

#### RFID Module Blocks[](https://kittenbothk-eng.readthedocs.io/en/latest/functional_module/PWmodules/powerBrickRFID.html#id1)

![../../\_images/kbrfidblocks1.png](https://kittenbothk-eng.readthedocs.io/en/latest/_images/kbrfidblocks1.png)

#### Writing data onto RFID Card[](https://kittenbothk-eng.readthedocs.io/en/latest/functional_module/PWmodules/powerBrickRFID.html#id2)

![../../\_images/rfidwrite3.png](https://kittenbothk-eng.readthedocs.io/en/latest/_images/rfidwrite3.png)

[Sample Code Download](https://bit.ly/PowerbrickM8_01sb3)

#### Reading Data from RFID card[](https://kittenbothk-eng.readthedocs.io/en/latest/functional_module/PWmodules/powerBrickRFID.html#id3)

![../../\_images/rfidread3.png](https://kittenbothk-eng.readthedocs.io/en/latest/_images/rfidread3.png)

[Sample Code Download](https://bit.ly/PowerbrickM8_02sb3)

#### Reading the UUID[](https://kittenbothk-eng.readthedocs.io/en/latest/functional_module/PWmodules/powerBrickRFID.html#id4)

![../../\_images/uidread3.png](https://kittenbothk-eng.readthedocs.io/en/latest/_images/uidread3.png)

[Sample Code Download](https://bit.ly/PowerbrickM8_03sb3)

#### Identification with UUID[](https://kittenbothk-eng.readthedocs.io/en/latest/functional_module/PWmodules/powerBrickRFID.html#id5)

![../../\_images/uididentify3.png](https://kittenbothk-eng.readthedocs.io/en/latest/_images/uididentify3.png)

[Sample Code Download](https://bit.ly/PowerbrickM8_04sb3)

### FAQ[](https://kittenbothk-eng.readthedocs.io/en/latest/functional_module/PWmodules/powerBrickRFID.html#faq)

1：Why is there no reaction when I click the blocks?

Make sure you have connected the Micro:bit correctly and flash the firmware again.