# \[Processing Android\] BLE GATT EXAMPLE

**URL:** <https://discourse.processing.org/t/processing-android-ble-gatt-example/33239>\
**Category:** Processing for Android\
**Created:** [November 2, 2021, 3:34am UTC](https://discourse.processing.org/t/processing-android-ble-gatt-example/33239 "2021-11-02T03:34:02Z")\
**Posts on this page:** 4\
**Page:** 1

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**Author:** ![GWAK](https://avatars.discourse-cdn.com/v4/letter/g/13edae/32.png) [@GWAK](https://discourse.processing.org/u/GWAK)\
**Post date:** [November 2, 2021, 3:34am UTC](https://discourse.processing.org/t/processing-android-ble-gatt-example/33239/1 "2021-11-02T03:34:02Z")

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1. VIDEO(YOUTUBE)  
[https://youtu.be/ilDFFb0BbH4](https://youtu.be/ilDFFb0BbH4)  
[https://youtu.be/ilDFFb0BbH4](https://youtu.be/ilDFFb0BbH4)  

2. Processing SOURCE CODE  
[BLE\_UART\_RAYTEMPBLUE.zip - Google Drive](https://drive.google.com/file/d/1kBWSJ1pXyVlTQpfgBHh2YHP6sLzQ2lCi/view)  
(You need to find the UUID carefully and write it down.)

3. Arduino Code  
[SoftwareSerialExample\_BLE.zip - Google Drive](https://drive.google.com/file/d/1y3j3YJxK85zcTw1QxlyRAFlV6nSFer3K/view?usp=sharing)

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**Author:** ![svan](https://avatars.discourse-cdn.com/v4/letter/s/82dd89/32.png) [@svan](https://discourse.processing.org/u/svan)\
**Post date:** [November 2, 2021, 4:41am UTC](https://discourse.processing.org/t/processing-android-ble-gatt-example/33239/2 "2021-11-02T04:41:09Z")

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Thank you very much for posting. I know very little about Bluetooth Low Energy (BLE) but would like to know more. Do you know the specs for the board? I can see that it has a lipo battery power supply and what appears to be a ble module, although it looks larger than the ones that I have seen from Adafruit. I also don’t see an Arduino. At the very end of the video the author connected something else to the board ?USB port and I’m not certain what was on the other end of that cable; possibly computer to download code?. The buzzer button goes on the UART connector; do you know a source for it and the prototype board? I’m used to seeing the ble board connected to an Arduino board (eg UNO) using stacking headers, but this board appears to be free-standing and has a speaker on it as well. Interesting project that I would like to try.

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**Author:** ![GWAK](https://avatars.discourse-cdn.com/v4/letter/g/13edae/32.png) [@GWAK](https://discourse.processing.org/u/GWAK)\
**Post date:** [November 2, 2021, 11:13pm UTC](https://discourse.processing.org/t/processing-android-ble-gatt-example/33239/3 "2021-11-02T23:13:42Z")

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![a1](https://canada1.discourse-cdn.com/flex036/uploads/processingfoundation1/original/2X/d/de9d83e9f010498615b2c58e2bcc84847fd0d299.jpeg)  
This is PCB Controller.

1. Operate voltage : 3.3v
2. Arduino : Pro mini 3.3V 8MHz
3. BLE Module : BLE5.0 BoT-nLE521D
4. Interface : GATT Communication

1. circuit-arduino  

2. charging  
 ![a3](https://canada1.discourse-cdn.com/flex036/uploads/processingfoundation1/original/2X/9/95159a7b1c444801f8db23d51af090272f73f69b.jpeg)

3. BLE

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<div class="post-metadata">

**Author:** ![svan](https://avatars.discourse-cdn.com/v4/letter/s/82dd89/32.png) [@svan](https://discourse.processing.org/u/svan)\
**Post date:** [November 2, 2021, 11:45pm UTC](https://discourse.processing.org/t/processing-android-ble-gatt-example/33239/4 "2021-11-02T23:45:50Z")

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@GWAK Thanks for the schematics. I’m not sure that I have enough skill to wire all that together. I do have an UNO with a ble shield from Adafruit that I might be able to use.