Re: BlueSaab 6.1 - No "BlueSaab" Bluetooth device available after power up

Posted by Seth on Dec 19, 2019; 3:44pm
URL: http://bluesaab-forum.90.s1.nabble.com/BlueSaab-6-1-No-BlueSaab-Bluetooth-device-available-after-power-up-tp1492p1558.html

You don’t need to solder the smd gnd pads under the rn52; they’re only possible to solder With reflow.

You should be able to connect to it via Bluetooth anytime but obviously when it has power in the car it should be stable. Usb power should be enough though but don’t worry about that just yet. 

Let us know how the car test goes. 

On Thu, Dec 19, 2019 at 10:25 Madsaab [via BlueSaab Forum] <[hidden email]> wrote:

The device is alive
Uploading the correct .bin file with the correct programmer did the trick.
I also had to swap the RXD and TXD lines.
Just to see, I tried the oscilloscope on the resonator pins, and I now get a nice sine wave on both pins.

I get a green/red/blue flashing LED and I can see the device on my phone. I paired to it, but the connection is a bit unstable it seems. I'm running it of USB power, so maybe it'll be more stable on 12v? Or was there something with it only connecting to the phone when CD-Changer was selected in the car?

A slight note: I didn't solder the 6 ground pads underneath the RN52 since I couldn't figure how to do it (skillet trick maybe?) and I deducted that the four accessible ground pins would be enough. I might have been wrong?
Anyway, I'll try connecting it to the car and report the progress. I just need to solder in the CDC plug and remove the bulky CD changer from my trunk. Don't have time today but hopefully I can do it tomorrow.

Thanks for the help here so far.

Regards, Mads

MY99 9-5SE V6t aut

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