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2 changes: 0 additions & 2 deletions bluetooth/apps-and-examples.md
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Expand Up @@ -23,8 +23,6 @@ about and try for yourself with your micro:bit

[bitty software apps](https://bittysoftware.blogspot.com/p/applications.html)

[Martins App](http://bluetooth-mdw.blogspot.co.uk/p/bbc-microbit.html)

[Android App on Google Play](https://play.google.com/store/apps/details?id=com.samsung.microbit&hl=en_GB)

<a href="http://www.samsung.com/uk/microbit/" data-proofer-ignore>Samsung and micro:bit</a>
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4 changes: 2 additions & 2 deletions bluetooth/profile.md
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Expand Up @@ -26,7 +26,7 @@ The BBC micro:bit [Bluetooth profile is defined in the DAL](https://lancaster-un
There are [pre-compiled Hex files available](https://lancaster-university.github.io/microbit-docs/ble/profile/#all-services-enabled-hex-file) that enable bluetooth services available on the micro:bit and some [example programs in the microbit-samples repository](https://github.com/lancaster-university/microbit-samples)

The micro:bit has a Bluetooth 4.1 stack with Bluetooth Low Energy (BLE) and supports
the [GAP Perhipheral Role](http://bluetooth-mdw.blogspot.co.uk/2016/07/microbit-and-bluetooth-roles.html).
the [GAP Perhipheral Role](https://bluetooth-developer.blogspot.com/2016/07/microbit-and-bluetooth-roles.html).

As per all Bluetooth, it operates in the ISM (Industrial Scientific Medical) band
and this starts at **2.4GHz and ends at 2.41GHz**. BLE divides the frequency
Expand Down Expand Up @@ -55,7 +55,7 @@ to do this.

# Further information

[Martin Woolley's Bluetooth Blog](http://bluetooth-mdw.blogspot.co.uk/p/bbc-microbit.html) has a range of information on using Bluetooth with micro:bit
[Martin Woolley's Bluetooth Blog](https://bluetooth-developer.blogspot.com/) has a range of information on using Bluetooth with micro:bit

[BittySoftware](https://bittysoftware.blogspot.com) has a range of Bluetooth enabled software for the micro:bit

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2 changes: 1 addition & 1 deletion hardware/1-3-revision.md
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Expand Up @@ -75,7 +75,7 @@ including smartphones and tablets.
| Channels | 50 2MHz channels, only 40 used (0 to 39), 3 advertising channels (37,38,39)
| Sensitivity | -93dBm in Bluetooth low energy mode
| Tx Power | -20dBM to 4dBm in 4 dB steps
| Role | [GAP Peripheral](http://bluetooth-mdw.blogspot.co.uk/2016/07/microbit-and-bluetooth-roles.html)
| Role | [GAP Peripheral](https://bluetooth-developer.blogspot.com/2016/07/microbit-and-bluetooth-roles.html)
| Congestion avoidance | Adaptive Frequency Hopping
| Profiles | 1 [BBC micro:bit profile](https://lancaster-university.github.io/microbit-docs/ble/profile/)
| More Info | [here](/bluetooth)
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2 changes: 1 addition & 1 deletion hardware/index.md
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Expand Up @@ -75,7 +75,7 @@ including smartphones and tablets.
| Channels | 50 2MHz channels, only 40 used (0 to 39), 3 advertising channels (37,38,39)
| Sensitivity | -93dBm in Bluetooth low energy mode
| Tx Power | -20dBM to 4dBm in 4 dB steps
| Role | [GAP Peripheral](http://bluetooth-mdw.blogspot.co.uk/2016/07/microbit-and-bluetooth-roles.html)
| Role | [GAP Peripheral](https://bluetooth-developer.blogspot.com/2016/07/microbit-and-bluetooth-roles.html)
| Congestion avoidance | Adaptive Frequency Hopping
| Profiles | [BBC micro:bit profile](https://lancaster-university.github.io/microbit-docs/ble/profile/)
| More Info | [Bluetooth](../bluetooth)
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