In a MAKEBLOCK XY Plotter I want to exchange the Orion Board with an Arduino-Board ( so I can change the Pin-Allocation and add a SD-Card-Module for example).
To easily switch between the two microcontrollers and so I am not modyfiying the Makeblock-Hardware, I want to connect the Arduino-Pins to a RJ25-socket jack. Then I can simply switch the RJ25 cables from the Orion to the Arduino sockets.*
The motors are connected via the following driver: Motor Stepper Driver
Looking at the picture of the Driver-RJ25-Jack I therefore connected Pins 8 and 2 to DIR and STP , GND to GND, and VIN to V-M.
The Arduino is powered through the power jack (12 V power supply)
However as soon as I’ve connected the motor and the power supply, I can’t use the Serial communication anymore (no answer) and the big chip on the Arduino Board gets very warm, even hot when I try connect more than just the motor.
Is there an obvious mistake in this that I’m missing?
Sadly I am very new to anything hardware related. How could I go about finding the issue here?
Am I missing information you need to give me advice?
Orion Board: Orion Board (Schematic)
Power supply: Power Supply 12V 12.5A
“Schematic”: see attached picture; Leftside= Arduino Pins, Rightside = RJ25-socket Pins, RJ25 cable is connected to the driver
*I did see the explanation of how to connect the Driver to an Arduino Board, but I would really like to use the RJ25 –cable solution, so I don’t have to solder anything to the MAKEBLOCK-Driver