Ive put a few screen shots with notes on this step, to make it a little easier. If you haven't installed the software yet you might want to leave the power off for now. The IN1 pin goes to pin 12 on the arduinoĪll going well you should hear the relay click when you plug you USB cable in and start Grbl, and the easy drivers should light up when the power supply is turned on.The GND pin goes to GND on the arduino.The vcc pin goes to the 5V ( 5 volt) pin on the arduino.We wont be using the z axis in this project.On the Y axis driver STEP goes to pin 3 and DIR goes to pin 6.On the X axis driver STEP goes to pin 2 and DIR goes to pin 5.Note there are usally 3 GRN pins on the ardunio board it doesn't matter which one you use.On the lower right there are 3 pins GND (ground) STEP and DIR(direction).The Power in - + pins go to the power supply and you need to get these around the right way and up to 30 volts DC.Motor coil A and motor coil B connect to the stepper motor It doesn't matter which way around as long as A goes to one coil and B to the other coil.In step three we identified the wiring for the stepper motors, so we can plug them in first. First we will look at the easy driver board, many of the pins are not used in this project. The wiring is pretty easy, use your dupont connectors and and start plugging stuff in. I found that the easy drivers do get quite hot so a bit of thermal grease and an old heat sink helped keep things cool.Make sure that you check the polarity of your power supply and wire it up correctly or you will have lots of smoke and swearing.Next I identified the wires coming out of the power supply and the voltage which turn out to be 28 volts.Repeat the process with other 2 motor leads and the other motor.Because th leads are the same colour I know that is on coil. Once that is worked out, I cut a dupoint lead in half and soldered each end on to the matching pair of wires.If it was open circuit, grab another wire and check that, you are looking for a pair of coils inside the motor, so you need to match up to ends of each coil (which are connected to to each wire).Grab any 2 wires on you stepper motor and check if you get a reading you should get either open circuit or a low resistance.Set your multimeter to the 200 ohms setting.The next step will show you where all the wires go but first we need to identify the four wires on our stepper motor. Once that was done it was time to start using some of those dupoint wires, they make every thing very easy to wire up Just pull a pin out of the headers and plug it in if you want to make the end of the wire male. The first thing to do is to work out where the Arduino, relay and easy drivers are all going to fit, so I removed all the old electronics and made up a laser cut board for everything to mount on.
0 kommentar(er)
