Author Topic: Bluetooth Port  (Read 1283 times)

Nosferatu

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Bluetooth Port
« on: April 30, 2017, 07:41:24 AM »
Hi,

i am wondering, how the pin headers for the bluetooth port can be used.
I hooked up my USB-Serial converter (FTDI) to GND, TX and RX and opened my Terminal at 115200 BPS. Nothing.. Not even the startup message from the GRBL-Firmware is coming up - not even if i press Return twice.

What can be wrong ?

Cheers
Nos!
-- EleksMaker A5 - 2500mW with T2-Laser (Laserweb3/ bCNC)

Stonemull

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Re: Bluetooth Port
« Reply #1 on: April 30, 2017, 09:56:11 AM »
Not sure, have you checked the serial with a loopback test.
I would disconnect TX though, as both pins already have a transmit pin on them, one side is the nano tx and the other is the ftdi tx. You only need the receive really unless you want to override the PC by injecting new TX data.

To use it with bluetooth on a Mana SE, my guess is you solder that link under the nano so the nano is powered by the onboard 5v switch mode, Then you can disconnect the USB and use a bluetooth or wifi
device in a bridge mode to connect to PC or tablet.
 
I get serial data on both pins at 115k.
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Nosferatu

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Re: Bluetooth Port
« Reply #2 on: May 01, 2017, 12:26:33 PM »
Loopback test (from my FTDI converter) was ok.
I did connected GND and RX from the FTDI to TX and GND from the board, while it was running. But i got no data on my terminal.

Is there a schematic from the board avail ?
-- EleksMaker A5 - 2500mW with T2-Laser (Laserweb3/ bCNC)

Stonemull

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Re: Bluetooth Port
« Reply #3 on: May 01, 2017, 06:37:36 PM »
No, but it is pretty easy to follow tracks, its only double sided.
Try RX to the Rx pin as well, both have data.
odd.
A3 Eleksmaker 2500mW
Solidoodle V2 Pro
Wanhao I3+ touch
Hacked Roland DXY-880
CNC3018 engraver
CNC Plasma (work in progress)