Hi everyone!
I have laser cube CNC shield and connected arduino nano. I completed the GRBL control on computer, but i want to control it by using bluetooth. There is a problem that how i will connect HC 05 to shield, bacause there is no any free pin for this module. Thank you.
You just wire TX & RX & GND & VCC, as usual.
Nice. TX+RX are connected to usb->uart, so just plug it in your computer and be happy.
zwieblum:
Nice. TX+RX are connected to usb->uart, so just plug it in your computer and be happy.
And that answers the OP's question regarding using bluetooth how? I ask because I'm curious.
There are many methods for adding bluetooth or wifi to cnc shields.
Usually adding them will negate the USB connection though so you may have to add a switch to release TX and RX back to the board if you need to change something.
Bob.