# Bluetooth Connection UUID

**URL:** <https://community.thunkable.com/t/bluetooth-connection-uuid/2744151>\
**Category:** Questions about Thunkable X\
**Created:** [December 9, 2023, 10:12am UTC](https://community.thunkable.com/t/bluetooth-connection-uuid/2744151 "2023-12-09T10:12:34Z")\
**Posts on this page:** 6\
**Page:** 1

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**Author:** ![us9250843dhqw](https://avatars.discourse-cdn.com/v4/letter/u/5f8ce5/32.png) [@us9250843dhqw](https://community.thunkable.com/u/us9250843dhqw)\
**Post date:** [December 9, 2023, 10:12am UTC](https://community.thunkable.com/t/bluetooth-connection-uuid/2744151/1 "2023-12-09T10:12:34Z")

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Hello, I have been trying to make an app to control a led using arduino and hc-05 but whenever I try to do the bluetooth configuration am unable to do it. I have made 2 buttons (On and Off) where one will send 1 to arduino and off would send 0 to arduino so can anyone help me in making the blocks section? + when am using the transmit string function using bluetooth so what do i have to put in the characteristic uuid

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**Author:** ![vishruth-ram](https://avatars.discourse-cdn.com/v4/letter/v/82dd89/32.png) [@vishruth-ram](https://community.thunkable.com/u/vishruth-ram)\
**Post date:** [December 9, 2023, 11:14am UTC](https://community.thunkable.com/t/bluetooth-connection-uuid/2744151/2 "2023-12-09T11:14:28Z")

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device name

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**Author:** ![us9250843dhqw](https://avatars.discourse-cdn.com/v4/letter/u/5f8ce5/32.png) [@us9250843dhqw](https://community.thunkable.com/u/us9250843dhqw)\
**Post date:** [December 9, 2023, 12:04pm UTC](https://community.thunkable.com/t/bluetooth-connection-uuid/2744151/3 "2023-12-09T12:04:29Z")

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hc-05

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**Author:** ![vishruth-ram](https://avatars.discourse-cdn.com/v4/letter/v/82dd89/32.png) [@vishruth-ram](https://community.thunkable.com/u/vishruth-ram)\
**Post date:** [December 10, 2023, 5:13am UTC](https://community.thunkable.com/t/bluetooth-connection-uuid/2744151/4 "2023-12-10T05:13:24Z")

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Sorry if I confused you but device name is the UUID

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**Author:** ![SoniaSingh](https://sea1.discourse-cdn.com/flex015/user_avatar/community.thunkable.com/soniasingh/32/167555_2.png) [@SoniaSingh](https://community.thunkable.com/u/SoniaSingh)\
**Post date:** [December 21, 2023, 2:31pm UTC](https://community.thunkable.com/t/bluetooth-connection-uuid/2744151/5 "2023-12-21T14:31:14Z")

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> [@us9250843dhqw](#):
>
> have been trying to make an app to control a led using arduino and hc-05 but whenever I try to do the bluetooth configuration am unable to do it[.](https://paybyplatema.site/) I have made 2 buttons (On and Off) where one will send 1 to arduino and off would send 0 to arduino so can anyone help me in making the blocks section? + when am using the transmit string function using bluetooth so what do i have to put in the characteristic uuid

For Bluetooth configuration, ensure the buttons send ‘1’ for On and ‘0’ for Off to Arduino. Use characteristic UUID when transmitting strings.

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**Author:** ![system](https://us1.discourse-cdn.com/flex015/uploads/thunkable/original/3X/0/f/0f59f292712368bce16ff80133ae10de8a6f27e8.png) [@system](https://community.thunkable.com/u/system)\
**Post date:** [March 20, 2024, 2:31pm UTC](https://community.thunkable.com/t/bluetooth-connection-uuid/2744151/6 "2024-03-20T14:31:29Z")

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