# How to trigger a Bluetooth device for incoming calls, messages and alarm?
**URL:** https://community.thunkable.com/t/how-to-trigger-a-bluetooth-device-for-incoming-calls-messages-and-alarm/2533844
**Category:** Questions about Thunkable X
**Tags:** beginner
**Created:** [August 6, 2023, 1:05pm UTC](https://community.thunkable.com/t/how-to-trigger-a-bluetooth-device-for-incoming-calls-messages-and-alarm/2533844 "2023-08-06T13:05:34Z")
**Posts on this page:** 4
**Page:** 1
### Author:  [@dhanushan48608nkfw](https://community.thunkable.com/u/dhanushan48608nkfw)
#### Post date: [August 6, 2023, 1:05pm UTC](https://community.thunkable.com/t/how-to-trigger-a-bluetooth-device-for-incoming-calls-messages-and-alarm/2533844/1 "2023-08-06T13:05:34Z")
I’m trying to build an app which send a notification to the Bluetooth connected Arduino device whenever a new call, message comes and the alarm ring. How to make this kind of app? I just want to know how to trigger the app while incoming calls and messages. I can handle with the Bluetooth and Arduino.
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### Author:  [@dhanushan48608nkfw](https://community.thunkable.com/u/dhanushan48608nkfw)
#### Post date: [August 8, 2023, 4:06pm UTC](https://community.thunkable.com/t/how-to-trigger-a-bluetooth-device-for-incoming-calls-messages-and-alarm/2533844/2 "2023-08-08T16:06:51Z")
why isn’t anyone responding to my posts?
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### Author:  [@rxgaming101](https://community.thunkable.com/u/rxgaming101)
#### Post date: [August 9, 2023, 5:26pm UTC](https://community.thunkable.com/t/how-to-trigger-a-bluetooth-device-for-incoming-calls-messages-and-alarm/2533844/3 "2023-08-09T17:26:15Z")
just wait
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### Author:  [@system](https://community.thunkable.com/u/system)
#### Post date: [November 7, 2023, 5:26pm UTC](https://community.thunkable.com/t/how-to-trigger-a-bluetooth-device-for-incoming-calls-messages-and-alarm/2533844/4 "2023-11-07T17:26:52Z")
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