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I will keep you posted on my progress. Removed Tx Diode from V1. Simply connect the 4 pins to your Arduino board. Hi I am having the same problem, the thing is my bluerooth does not have the diode urs had. It is already bundled with Arduino, so no further downloads are necessary.
Hi, I have also a pair of no name HC modules that refuses to work using their serial pads. Maybe u could help me somehow Thanks Tomas Like Like. Always best to have hardware and software working as a team! And I would use a logic analyzer to check the signals.
Please try it first with your PC. Thanks for the hint, that made it more clear for me and finally it worked. In my sketch, it supposed to send out 0 all the time, but occasionally it would send out some other seemingly random value. You are commenting using your Facebook account. Have you had a look at the schematic of the board already? So if you connect it to your modem directly, that will be a bad idea: Yes, this issue is not related to 3.
Thank you Sam Like Like. With all the comments thanks! With this I can see what is getting to the bluetootj, and what ends up at the Bluetooth module itself. Not elegant, and not recommended for a product you are going to sell, but probably safe and reliable for the lab.
That way other users can learn from it or find it on the web.
Seems to work for me. Reapplied Shrink Tubing with Scotch Tape.
Getting Bluetooth Working with JY-MCU BT_BOARD V1.06
Maybe it has a different firmware see this post about different firmware? Your phone needs to be able to create a serial-over-usb connection and profile.
I wired up a V1. If I get that working I will definitely post the solution. If you have an Android device, there is this Blue Serial app for testing serial communication over Bluetooth. The back side does not give much details, but some vias are connected to the pins of the HC module:.
And thanks for the article, Erich!
I have noticed that on the AT command modeI can only type in commands when the kl25z rx is disconnected from the HC05 tx. Have a read here: Hi Erich, I am trying to send messages from an android phone to a pc terminal via bluetooth using the HC 05 module connected to the frdm kl25z and I am facing a few problems.
Any help is appreciated. Interesting is that I can no longer connect to the module, through phone or other Bluetooth module. In this product manual https: But wen I tried to communicate to the module, it failed: I read about your work on it and I am pleased that you have posted so much details about it.
Today I notice that even using battery I would have some similar error sometimes, but the error rate when using USB as power source seems to be a lot more. Thanks for your answers, Then it is safer to use a serial module between HC and serial db9 modem port, as it works flawlessly now.
Easy Arduino Bluetooth Communication with JY-MCU Bluetooth module
HC serial wireless module. Hi Ken, I have used these modules only in slave mode with the host PC or android as master. I observed that as long as I power my board with a battery, it runs perfectly. But interestingly it sometimes has some error.
Connecting Arduino Uno and the JY-MCU Bluetooth module using SoftwareSerial |
Then current flows to GND through the pull-up, and it is best removed, or replaced by a pull-down not available on the KL25Z. And if there are, then only for older boards like the V1. I hope that this post is useful for anyone else who might receive the V1. Thank for your info.
In any case, you might need to add some delay jy-jcu pulling up the pin, as it needs some time to get the pull-up effective. But I started bluetoothh use PDD macros to set things like this.
Learn how your comment data is processed. The string from the host arrives on the Tx pin with baud too: What value would you recommend for the resistor? I never heard about the android app, and that was really awesome.