# Bluetooth module

**URL:** <https://forum.core-electronics.com.au/t/bluetooth-module/4576>\
**Category:** Core Electronics\
**Created:** [18 February 2019 07:35 UTC](https://forum.core-electronics.com.au/t/bluetooth-module/4576 "2019-02-18T07:35:55Z")\
**Posts on this page:** 2\
**Page:** 1

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**Author:** ![raj80904](https://avatars.discourse-cdn.com/v4/letter/r/ec9cab/32.png) [@raj80904](https://forum.core-electronics.com.au/u/raj80904)\
**Post date:** [18 February 2019 07:35 UTC](https://forum.core-electronics.com.au/t/bluetooth-module/4576/1 "2019-02-18T07:35:55Z")

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Hi guys,

i am very new to this design. i need to design a bluetooth module where in I give command from my phone and I get a some voltage as output end of the module.

So it is like  
phone -\> bluetooth module -\> 5V

The bluetooth module will have batter pack so the module on receiving some command from phone should break or make circuit. How can I do this? Please advice. I want to keep to cheap and no unwanted items on pcb. I know I can use HC-06 , but it might be costly

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**Author:** ![Stephen](https://yyz2.discourse-cdn.com/flex028/user_avatar/forum.core-electronics.com.au/stephen/32/1599_2.png) [@Stephen](https://forum.core-electronics.com.au/u/Stephen)\
**Post date:** [19 February 2019 04:14 UTC](https://forum.core-electronics.com.au/t/bluetooth-module/4576/2 "2019-02-19T04:14:42Z")

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Hi Raj,

I would go with the Blynk Board by Sparkfun:

> **[SparkFun Blynk Board - ESP8266](https://core-electronics.com.au/sparkfun-blynk-board-esp8266.html)**
>
> Blynk is an easy to use app builder that allows users to add a variety of buttons, sliders, graphical displays and even RGB controllers to their phone. The SparkFun Blynk Board is specially designed to work with the ‘widgets’ within the Blynk mobile...

It interfaces directly with the Blynk app which is very simple to do things like this!