Sending and Receiving data with a smartphone and a single HC-05 Module

Projects General Guidance
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Hi everyone,I am wondering if I can use a single HC-05 Module to send sensor data to my smartphone and also using my phone to send commands to the Arduino for controlling something,if you are wondering how i am going to send and receive data on my phone if most traditional Bluetooth apps only support 1 way modes,it's with a self made app that I made on the mit app inventor.I would like to know if it is possible and what kind of serial (or other) commands I would have to include in my code,and if a traditional Rx to tx and tx to Rx wiring would work.

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No.

Yes.

Wifi, RF

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have a look at Arduino and HC-05 Bluetooth Module Tutorial

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Thanks for the simple and straightforward reply railroder,do you have any idea of how i can transfer sensor data wirelessly to my phone?
edit:railroader not railroder

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what sensors ?
what do you want to do with the data on the phone?
e..g.display it (text, graphs, etc) using an app? existing app or will you implement one?

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I have a dht11 temp and humidtiy sensor and I intend to use a temperature probe to measure water temperature as my project has to do with water

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I intend to display it as text

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And a current sensor and I will be measuring a analog voltage

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All of Which I intend to display on my phone as text on my app which as mentioned above I made with the mit app inventor

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simple to send text to an Android and display it using Serial Bluetooth Terminal

have a look at arduino-micro-sends-with-hc-06-but-wont-receive using a HC-06 to send text to an Android serial terminal

1 Like
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Thanks,what kind of code do I need on the arduino side though? just serial.print or what would I need

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thank you @horace for the anwser

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Yes. The best kept secret about Bluetooth is that that is all you need...

In the immortal words of some guru round here: " Serial is serial, and Bluetooth is just serial, but without wires"

1 Like
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Thanks everyone for all the answers I really appreciate your help and thanks for answering my question.

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