Author Topic: Bluetooth connection  (Read 101 times)

MegaBlackJoe

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Bluetooth connection
« on: September 16, 2019, 10:18:00 AM »
I am going to connect Bluetooth HC-05 module to control my CNC, not laser. I need to configure the module via AT commands first to set up parity bits, even, uneven as well as stopbits. Do you have any idea which values should I choose for that? Should I be looking for grbl defaults? 

Zax

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Re: Bluetooth connection
« Reply #1 on: September 16, 2019, 10:50:40 AM »
Yes. 115200 N-8-1.

115200 baud rate
No parity
8-bits
1-stop bit

ggallant571

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Re: Bluetooth connection
« Reply #2 on: September 16, 2019, 10:52:50 AM »
There is an active github group (grbl_esp32) that is working towards a wifi and bluetooth solution. I built a simple PCB that has an ESP module footprint on the top and a NANO footprint on the bottom. They have a web based utility similar to Universal GCODE to control the motors and feed gcode. I also build a dedicated PCB which I have only used on the laser with a USB cable connection.  Got sidetracked (again) and this project sits idle while they are advancing at a good clip. They are primarily CNC oriented with a few laser users.
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