Author Topic: Android + Bluetooth + Arduino = Not Working  (Read 2084 times)

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Offline Brown

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Android + Bluetooth + Arduino = Not Working
« on: January 08, 2014, 03:58:09 am »
Hi, I got a HC-05 BT Module and an Android I tried this http://www.instructables.com/id/Andruino-A-Simple-2-Way-Bluetooth-based-Android-C/ and it doesn't work. my phone connects with the module but the led wont turn off or on
« Last Edit: January 08, 2014, 04:37:59 am by Brown »
 

Lurch

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Re: Android + Bluetooth + Arduino = Not Working
« Reply #1 on: January 08, 2014, 05:32:37 am »
Something must be wrong then.

Usual cause of things not working is wiring errors. Usually people say 10 times that it is correct and then on page 4 the OP comes back and says 'oops, wire in wrong hole lol' so check and recheck everything.
« Last Edit: January 08, 2014, 05:34:41 am by Lurch »
 

Offline psycho0815

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Re: Android + Bluetooth + Arduino = Not Working
« Reply #2 on: January 08, 2014, 11:44:20 am »
Yeah check the wirering. Also, there are HC05 Modules out there that have 5V logic on the rx and tx lines (i know because i have one), so make sure yours is in fact 3.3V level. Otherwise loose the voltagedivider on the modules rx-pin. Also check the baud-rate. I think these things come with 9600-Baud, but that can be changed.
Also try not powering the arduino from USB if youre doing that. Could be that the usb-uart chip is interfering. Not sure about that though, i only ever used those modules with SoftSerial on Arduino.
If you like, check out my blog (german):
http://h-reg.blogspot.de
 

Offline Brown

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Re: Android + Bluetooth + Arduino = Not Working
« Reply #3 on: January 09, 2014, 12:03:32 am »
 


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