# BLE / BlueTooth

**URL:** https://community.thunkable.com/c/thunkable/ble-bluetooth/77.md?page=2

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**Page:** 3

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## [Is there a way to get a device BLE UUID without the user typing it in?](https://community.thunkable.com/t/is-there-a-way-to-get-a-device-ble-uuid-without-the-user-typing-it-in/2225153)

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**Author:** [@supercoolcoder](https://community.thunkable.com/u/supercoolcoder)\
**Replies:** 2\
**Last updated:** [February 5, 2023, 2:49pm UTC](https://community.thunkable.com/t/is-there-a-way-to-get-a-device-ble-uuid-without-the-user-typing-it-in/2225153 "2023-02-05T14:49:59Z")

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Is there a way to get a device BLE UUID without the user typing it in?

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## [Request aside App Store Connect](https://community.thunkable.com/t/request-aside-app-store-connect/2253387)

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**Author:** [@dellipaoli.enzo01hh1](https://community.thunkable.com/u/dellipaoli.enzo01hh1)\
**Replies:** 2\
**Last updated:** [February 3, 2023, 12:20pm UTC](https://community.thunkable.com/t/request-aside-app-store-connect/2253387 "2023-02-03T12:20:17Z")

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To help us proceed with the review of your app, provide a link to a demo video in the App Review Information section of App Store Connect, then reply to this message. The demo video must include the entire app workflow, …

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## [ESP32 Bluetooth Low Energy](https://community.thunkable.com/t/esp32-bluetooth-low-energy/2231325)

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**Author:** [@supercoolcoder](https://community.thunkable.com/u/supercoolcoder)\
**Replies:** 1\
**Last updated:** [January 21, 2023, 11:41am UTC](https://community.thunkable.com/t/esp32-bluetooth-low-energy/2231325 "2023-01-21T11:41:33Z")

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Can somebody please give me the full guide on how to connect to an ESP32?

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## [Bluetooth (BLE)](https://community.thunkable.com/t/bluetooth-ble/2224920)

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**Author:** [@supercoolcoder](https://community.thunkable.com/u/supercoolcoder)\
**Replies:** 4\
**Last updated:** [January 16, 2023, 7:36pm UTC](https://community.thunkable.com/t/bluetooth-ble/2224920 "2023-01-16T19:36:06Z")

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When I use the list viewer to get my scanned items, there is always many empty slots between each item. How do I solve this?

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## [Need 128-bit UUID](https://community.thunkable.com/t/need-128-bit-uuid/1952794)

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**Author:** [@dresselhaus.dan0vxs](https://community.thunkable.com/u/dresselhaus.dan0vxs)\
**Replies:** 1\
**Last updated:** [January 16, 2023, 7:31pm UTC](https://community.thunkable.com/t/need-128-bit-uuid/1952794 "2023-01-16T19:31:02Z")

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I am trying to write an app to talk to a U-Blox NINA BLE chip using their serial port service (SPS). SPS has a 128-bit characteristic UUID. Thunkable docs say only 32-bit UUID is supported. Is this true? Any custom B…

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## [How can i make a relay board work via bluetooth using thunkable](https://community.thunkable.com/t/how-can-i-make-a-relay-board-work-via-bluetooth-using-thunkable/2213474)

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**Author:** [@waynerushykhd](https://community.thunkable.com/u/waynerushykhd)\
**Replies:** 1\
**Last updated:** [January 9, 2023, 7:12pm UTC](https://community.thunkable.com/t/how-can-i-make-a-relay-board-work-via-bluetooth-using-thunkable/2213474 "2023-01-09T19:12:26Z")

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how can i make a relay board work via bluetooth using thunkable

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## [I have a Tinyshine 12 channel Relay Board-How do I turn them off with the thunkable app](https://community.thunkable.com/t/i-have-a-tinyshine-12-channel-relay-board-how-do-i-turn-them-off-with-the-thunkable-app/2213097)

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**Author:** [@waynerushykhd](https://community.thunkable.com/u/waynerushykhd)\
**Replies:** 0\
**Last updated:** [January 9, 2023, 2:59pm UTC](https://community.thunkable.com/t/i-have-a-tinyshine-12-channel-relay-board-how-do-i-turn-them-off-with-the-thunkable-app/2213097 "2023-01-09T14:59:00Z")

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I have a Tinyshine 12 channel Relay Board-How do I turn relays on and off with the Thunkable app

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## [How to get data using BLE API](https://community.thunkable.com/t/how-to-get-data-using-ble-api/2170152)

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**Author:** [@loveofhj9h](https://community.thunkable.com/u/loveofhj9h)\
**Replies:** 1\
**Last updated:** [December 8, 2022, 2:14pm UTC](https://community.thunkable.com/t/how-to-get-data-using-ble-api/2170152 "2022-12-08T14:14:28Z")

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hello We are conducting a simple test to obtain information from blood pressure devices. Using Advanced’s Bluetooth We are conducting a blood pressure reading test using an OMRON blood pressure monitor (HEM-7155T). B…

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## [BLE read and write don't work in APK, but work perfectly in live preview](https://community.thunkable.com/t/ble-read-and-write-dont-work-in-apk-but-work-perfectly-in-live-preview/2141789)

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**Author:** [@lbonnell71](https://community.thunkable.com/u/lbonnell71)\
**Replies:** 1\
**Last updated:** [November 23, 2022, 12:42pm UTC](https://community.thunkable.com/t/ble-read-and-write-dont-work-in-apk-but-work-perfectly-in-live-preview/2141789 "2022-11-23T12:42:33Z")

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Hi folks, my BLE app works just perfectly with the live preview on my Android 12 device A53, and mostly works from the APK. my app reads 5 Characteristics and Writes to 2 Characteristics one of the Characteristics is …

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## [BLE cannot communicate via transmit channel](https://community.thunkable.com/t/ble-cannot-communicate-via-transmit-channel/2079804)

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**Author:** [@yurgen](https://community.thunkable.com/u/yurgen)\
**Replies:** 4\
**Last updated:** [October 27, 2022, 11:09am UTC](https://community.thunkable.com/t/ble-cannot-communicate-via-transmit-channel/2079804 "2022-10-27T11:09:02Z")

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Hello everybody! Pls help me to understand very strange BLE behavior. I have a device with BLE module. First of all, the device works good with other APPs, for example, nRFConnect. But when I try to use my device with…

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## [Read data from esp32](https://community.thunkable.com/t/read-data-from-esp32/2035997)

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**Author:** [@brvus76](https://community.thunkable.com/u/brvus76)\
**Replies:** 1\
**Last updated:** [September 10, 2022, 4:59pm UTC](https://community.thunkable.com/t/read-data-from-esp32/2035997 "2022-09-10T16:59:49Z")

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Dear all, I am really new to thunkable. I would like to send through bluetooth a data to Android. Imagine to have an ESP32 reading a temperature. How can I see this value on a lable in thunkable? Thank you very much

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## [Bluetooth dont work with HC-05 (slave) and HC-06 (master/slave)](https://community.thunkable.com/t/bluetooth-dont-work-with-hc-05-slave-and-hc-06-master-slave/2022483)

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**Author:** [@fabygarofalo](https://community.thunkable.com/u/fabygarofalo)\
**Replies:** 2\
**Last updated:** [September 1, 2022, 10:54pm UTC](https://community.thunkable.com/t/bluetooth-dont-work-with-hc-05-slave-and-hc-06-master-slave/2022483 "2022-09-01T22:54:22Z")

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Hi all, Please Thunkable staff, tell me if Bluetooth blcks really works with HC-05 (slave) and HC-06 (master/slave). I moved my project in AppInventor2 (working) to Thunkable (much better in GUI) but but I can’t make i…

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## [Does BlueTooth work?](https://community.thunkable.com/t/does-bluetooth-work/2023713)

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**Author:** [@etslab968](https://community.thunkable.com/u/etslab968)\
**Replies:** 2\
**Last updated:** [September 1, 2022, 7:33pm UTC](https://community.thunkable.com/t/does-bluetooth-work/2023713 "2022-09-01T19:33:11Z")

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I know this is a very general question, but I’ve read all of the BLE topics and most are closed with no resolution. I have an app in MIT App Inventor that I’m trying to move to Thunkable. It uses BLE to control a heate…

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## [BLE collecting data to be continuously sent through WEB API](https://community.thunkable.com/t/ble-collecting-data-to-be-continuously-sent-through-web-api/1983058)

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**Author:** [@electrondo4xl](https://community.thunkable.com/u/electrondo4xl)\
**Replies:** 8\
**Last updated:** [August 3, 2022, 12:06pm UTC](https://community.thunkable.com/t/ble-collecting-data-to-be-continuously-sent-through-web-api/1983058 "2022-08-03T12:06:27Z")

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Hello everyone! I\`m very new to X.Thunkable, I collect data from a remote device using BLE and I want to CONTINUOSLY send these data using a WEB API tool. I can send data to the WEB for example “once” when SCREEN opens…

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## [LED on/off with ESP32 and Thunkable (link)](https://community.thunkable.com/t/led-on-off-with-esp32-and-thunkable-link/1978280)

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**Author:** [@jared](https://community.thunkable.com/u/jared)\
**Replies:** 0\
**Last updated:** [July 27, 2022, 8:23pm UTC](https://community.thunkable.com/t/led-on-off-with-esp32-and-thunkable-link/1978280 "2022-07-27T20:23:58Z")

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Turn an LED or relay on/off with an ESP32 and Thunkable https://community.thunkable.com/t/led-on-off-with-esp32-and-thunkable/1978267/2

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## [Strange behaviour with BLE and HM-10](https://community.thunkable.com/t/strange-behaviour-with-ble-and-hm-10/641973)

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**Author:** [@tponcota5ks](https://community.thunkable.com/u/tponcota5ks)\
**Replies:** 4\
**Last updated:** [July 19, 2022, 9:17am UTC](https://community.thunkable.com/t/strange-behaviour-with-ble-and-hm-10/641973 "2022-07-19T09:17:25Z")

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Hi, I’m experiencing an issue when trying to read the custom characteristic of an HM-10 bluetooth module with the BLE Component. Here are a few precisions: Writing data works as expected I can read and write data with…

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## [Why does BLE Receive String work, and BLE Receive Byte Array not work](https://community.thunkable.com/t/why-does-ble-receive-string-work-and-ble-receive-byte-array-not-work/1831529)

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**Author:** [@davew3q](https://community.thunkable.com/u/davew3q)\
**Replies:** 11\
**Last updated:** [July 3, 2022, 5:39pm UTC](https://community.thunkable.com/t/why-does-ble-receive-string-work-and-ble-receive-byte-array-not-work/1831529 "2022-07-03T17:39:01Z")

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So I’ve faced some issues with a BLE read, and here is the best summary I have: “Receive String” works on a READ characteristic “Receive Byte Array” returns on error on the exact same characteristic. Here is my case, …

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## [Can't receive String from my Bluno device](https://community.thunkable.com/t/cant-receive-string-from-my-bluno-device/1949953)

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**Author:** [@aspras01gt10bm](https://community.thunkable.com/u/aspras01gt10bm)\
**Replies:** 3\
**Last updated:** [July 3, 2022, 12:50pm UTC](https://community.thunkable.com/t/cant-receive-string-from-my-bluno-device/1949953 "2022-07-03T12:50:28Z")

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Hi all, I am trying to build an app to communicate with my Bluno. I can transmit Strings without any problems, but when I try to receive Strings, it shows me the last value I transmitted. Attaching my blocks: Here…

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## [Why can't I connect to device using the same UUID characteristic on iOS that works on the android app?](https://community.thunkable.com/t/why-cant-i-connect-to-device-using-the-same-uuid-characteristic-on-ios-that-works-on-the-android-app/1945721)

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**Author:** [@saabbearpigc](https://community.thunkable.com/u/saabbearpigc)\
**Replies:** 3\
**Last updated:** [June 29, 2022, 7:38pm UTC](https://community.thunkable.com/t/why-cant-i-connect-to-device-using-the-same-uuid-characteristic-on-ios-that-works-on-the-android-app/1945721 "2022-06-29T19:38:53Z")

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Hello, I am using an Arduino with an HM-10 module on android the thunkable app works well, (connects / transmits and receives fine). However on iOS it connects fine but will not transmit or receive and I get the follo…

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## [Internet Of Things](https://community.thunkable.com/t/internet-of-things/1941919)

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**Author:** [@uj-ulongjep](https://community.thunkable.com/u/uj-ulongjep)\
**Replies:** 6\
**Last updated:** [June 28, 2022, 1:26pm UTC](https://community.thunkable.com/t/internet-of-things/1941919 "2022-06-28T13:26:04Z")

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Please help master…how to use the example firebase Demo ESP8266 below, in order to control the light on/off thunkable+firebase+nodeMCU ESP 8266… #include \<ESP8266WiFi.h\> #include \<FirebaseArduino.h\> // Set these to ru…

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## [Critical Error Occured with Bluetooth](https://community.thunkable.com/t/critical-error-occured-with-bluetooth/1924518)

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**Author:** [@tringuyen](https://community.thunkable.com/u/tringuyen)\
**Replies:** 2\
**Last updated:** [June 14, 2022, 11:15am UTC](https://community.thunkable.com/t/critical-error-occured-with-bluetooth/1924518 "2022-06-14T11:15:16Z")

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Hello guys, I had this problem when using bluetooth.Whats going on exactly? this problem is for all ? or just me?

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## [Transmit image through BLE?](https://community.thunkable.com/t/transmit-image-through-ble/1923168)

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**Author:** [@khely91ka843](https://community.thunkable.com/u/khely91ka843)\
**Replies:** 0\
**Last updated:** [June 13, 2022, 4:29pm UTC](https://community.thunkable.com/t/transmit-image-through-ble/1923168 "2022-06-13T16:29:19Z")

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Hi guys, im trying to print an image to my bluetooth printer, is it possible in any way?

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## [Issues with BLE read/write byte array blocks](https://community.thunkable.com/t/issues-with-ble-read-write-byte-array-blocks/1861148)

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**Author:** [@muneer](https://community.thunkable.com/u/muneer)\
**Replies:** 26\
**Last updated:** [June 11, 2022, 11:16pm UTC](https://community.thunkable.com/t/issues-with-ble-read-write-byte-array-blocks/1861148 "2022-06-11T23:16:36Z")

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I’ve been testing an app with BLE send/receive and was working fine up until yesterday afternoon when all of a sudden every attempt to use any blocks with send or receive crashes the app. I tried an old app that was wor…

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## [Esp32 and dht11 weather station app](https://community.thunkable.com/t/esp32-and-dht11-weather-station-app/1920599)

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**Author:** [@jared](https://community.thunkable.com/u/jared)\
**Replies:** 0\
**Last updated:** [June 11, 2022, 12:45pm UTC](https://community.thunkable.com/t/esp32-and-dht11-weather-station-app/1920599 "2022-06-11T12:45:36Z")

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## [I tried to make app for transmit a message to Arduino using Bluetooth but bluetooth is not connecting and it not transmitting the message](https://community.thunkable.com/t/i-tried-to-make-app-for-transmit-a-message-to-arduino-using-bluetooth-but-bluetooth-is-not-connecting-and-it-not-transmitting-the-message/1876436)

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**Author:** [@prajwalsunilkanse777](https://community.thunkable.com/u/prajwalsunilkanse777)\
**Replies:** 3\
**Last updated:** [May 15, 2022, 1:10pm UTC](https://community.thunkable.com/t/i-tried-to-make-app-for-transmit-a-message-to-arduino-using-bluetooth-but-bluetooth-is-not-connecting-and-it-not-transmitting-the-message/1876436 "2022-05-15T13:10:56Z")

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thats my block but it didnt connected and not transmitting??? any one help me?

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## [Is it possible in Thunkable X to kind of filter the list of available BLE devices during scan?](https://community.thunkable.com/t/is-it-possible-in-thunkable-x-to-kind-of-filter-the-list-of-available-ble-devices-during-scan/1866281)

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**Author:** [@shtokyd](https://community.thunkable.com/u/shtokyd)\
**Replies:** 8\
**Last updated:** [May 8, 2022, 11:28am UTC](https://community.thunkable.com/t/is-it-possible-in-thunkable-x-to-kind-of-filter-the-list-of-available-ble-devices-during-scan/1866281 "2022-05-08T11:28:23Z")

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Hi dear community, I was wondering if there is a way to build a filtered View List of discovered BLE devices during bluetooth scan, to not display absolutely all available bluetooth devices but for example only with a sp…

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## [Trying to connect Bluetooth BP cuff, but struggling with the "characteristic UUID" stuff](https://community.thunkable.com/t/trying-to-connect-bluetooth-bp-cuff-but-struggling-with-the-characteristic-uuid-stuff/1849525)

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**Author:** [@multitech-visions](https://community.thunkable.com/u/multitech-visions)\
**Replies:** 4\
**Last updated:** [April 26, 2022, 2:47pm UTC](https://community.thunkable.com/t/trying-to-connect-bluetooth-bp-cuff-but-struggling-with-the-characteristic-uuid-stuff/1849525 "2022-04-26T14:47:04Z")

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I’m very new to BLE stuff, and Thunkable, so please excuse my ignorance. I’m trying to connect and collect data from a BLE blood pressure cuff, but I don’t have a clue what I’m doing. I’ve got some documentation from …

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## [\[Solved\] How do I list results of BLE scan to include BOTH the Device Name and Device ID?](https://community.thunkable.com/t/solved-how-do-i-list-results-of-ble-scan-to-include-both-the-device-name-and-device-id/318914)

<div class="topic-metadata">

**Author:** [@zimbu-bcb](https://community.thunkable.com/u/zimbu-bcb)\
**Replies:** 16\
**Last updated:** [April 1, 2022, 12:56pm UTC](https://community.thunkable.com/t/solved-how-do-i-list-results-of-ble-scan-to-include-both-the-device-name-and-device-id/318914 "2022-04-01T12:56:51Z")

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I am scanning for BLE devices then listing the results on screen. I can list the Device Names without a problem, and the Device IDs without a problem, but I would like to show both of these together on each line of the l…

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## [Z wave, Alexa, Google Assistant, Arduino](https://community.thunkable.com/t/z-wave-alexa-google-assistant-arduino/1794744)

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**Author:** [@overshield](https://community.thunkable.com/u/overshield)\
**Replies:** 2\
**Last updated:** [March 21, 2022, 9:59pm UTC](https://community.thunkable.com/t/z-wave-alexa-google-assistant-arduino/1794744 "2022-03-21T21:59:53Z")

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Is it possible to connect apps made in Thunkable to real world devices to control things through the app? For example if I wanted an app to control smart LED lights over wifi, or an app to control a garage door opener, …

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## [Adding the Bluetooth block to my app](https://community.thunkable.com/t/adding-the-bluetooth-block-to-my-app/1746377)

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**Author:** [@muzafferkanaan2defua](https://community.thunkable.com/u/muzafferkanaan2defua)\
**Replies:** 4\
**Last updated:** [February 27, 2022, 7:34am UTC](https://community.thunkable.com/t/adding-the-bluetooth-block-to-my-app/1746377 "2022-02-27T07:34:17Z")

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Hello, I am trying to develop an app that has to connect to a Bluetooth Low Energy device. I believe I need to add a BLE block to do this, but I have searched everywhere and there does not appear to be a block related t…

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