That block provides power to the drivers and stepper motors which can be up to 2 Amps per channel. You need to supply a separate PS to power the motors. The connection you have made to the Uno is only for control with a max of 50Ma and not power.
You will also notice if you read the legend you need a 12 - 36V power supply. The Uno is 5V max on those pins. I suggest you read up on the Uno pins and capabilities first or you are going to have a lot of Uno's sitting in your bin
NO!!!!
The 12V to 36V terminal is to power the stepper that the CNC shield is controlling.
Your Arduino cannot supply anywhere near the current needed, also the Arduino voltage is 5V.
Unless you are powering from 12V at Vin, you can if the 12V supply has the current capacity, BUT connect the stepper power leads DIRECTLY to the power supply.
Can you please post a copy of your circuit, in CAD or a picture of a hand drawn circuit in jpg, png?
That diagram is not enough to see exactly what you are doing.
Can you please tell us your electronics, programming, Arduino, hardware experience?
NO!!!!
The 12V to 36V terminal is to power the stepper that the CNC shield is controlling.
Your Arduino cannot supply anywhere near the current needed, also the Arduino voltage is 5V.
Unless you are powering from 12V at Vin, you can if the 12V supply has the current capacity, BUT connect the stepper power leads DIRECTLY to the power supply.
Can you please post a copy of your circuit, in CAD or a picture of a hand drawn circuit in jpg, png?
That diagram is not enough to see exactly what you are doing.
Can you please tell us your electronics, programming, Arduino, hardware experience?
Thanks.. Tom...
That board is a CNC shield and doesn't really require a diagram as it is all built in. I use them. Just plug them onto the UNO, plug the drivers into the sockets and connect the power and stepper motors. What does need doing id to set the current of the drivers without the motors connected and to set the stepping ratio with the jumpers M0, 1 and 2, and load GBRL onto the Uno. Connecting this board up is the least of his worries
MarkDerbyshire:
That board is a CNC shield and doesn't really require a diagram as it is all built in. I use them. Just plug them onto the UNO, plug the drivers into the sockets and connect the power and stepper motors. What does need doing id to set the current of the drivers without the motors connected and to set the stepping ratio with the jumpers M0, 1 and 2, and load GBRL onto the Uno. Connecting this board up is the least of his worries
Circuit diagram to show how it is connected to the outside world.
Power Supply and connections.
Power Supply specs.
Stepper motors and connections.
Stepper motor specs.
Jumper connections.
Tom...
Hello all
Although I've taken note of all the replies, I'll just reply to Mark's post.
I can see your point concerning the power to each board. So I've gone for a 5v 500mA phone charger for the Arduino and a 12v @ 2A for the CNC Shield.
It only needs to power 2 small Nema 17s and 1 micro servo SG90 and should be ample for those.
I apologize for not explaining my situation more fully, but anyone not familiar with drawing machines could have gone to "Instructables and had a look Here
Misan does a much better explanation of it than I ever could.
Hi,
What is the make/mode of your stepper motors.
NEMA 17 tells me its physical size, not its electrical characteristics, which will govern the size of the power supply.
Please a circuit diagram to show your connections and power supplies.
The "destructibles" article is a cop-out as he/she does not provide a proper connection diagram, just some pictures.
He/she does not even supply a part number for the steppers or power supply, these are some of the main items that essentially need to be described.
