Great job. I'm trying to install the system on my mill. I'm just missing the arduino sketch. Would you please help? I'm unable to cpy it from the video. Regards
I am trying to get to grips with the electronics involved and I am a little confused here. When I look up the motor you are using all info I can find says 3.87Volts. Where are you picking up that voltage from? The Sunpower power supply shows an output of 24volts. Jim
Hi again - I have just been looking at the circuit diagram and must ask this question. When you have finely adjusted the 10K potentiometer to a feed speed that is satisfactory and completed one pass over the object you are milling and now going back in the opposite direction do you just flick the direction switch or do you stop the feed first? If you slow it to a stop using the 10K pot you will then have to adjust the speed at every pass of the cutter left/right. If I wanted to leave the potentiometer setting alone and stop the traverse before changing direction would switching +5V onto the +ENA pin of the driver do that? Thanks in anticipation. Jim
Hi Jim. Better look video no. 186. This is an enhanced version of the power feed, and the English version of this video will be published in one week. Here we have two switches: Go and L / R (left/right). So, if the slide is in the, say, very left position, first stop the feed by the Go switch and then switch L / R switch to the right position and enable "Go".
@@prof-rieg Many thanks for the very swift reply. I shall watch the video186 and look forward to the English version in a weeks time. Thanks again. Jim
I have discovered the answer to my previous question but could someone please give me an answer to this one/two. After a lot of watching power feed setups/forum discussions on stepper motors I came across a couple of instances where there was a warning about operating the mill using the handle after fitting the power feed. There was a claim that doing so caused the stepper motor to behave as a generator and feed current back into the driver and Arduino with possible disastrous results. Is this correct? When turning off the power feed to use the hand wheel is there an order in which to do so? ie Power to driver followed by Arduino or vice versa? Thanks in anticipation
Please see my latest video on channel LSCAD: There is a Nema 34 stepper motor installed as powerfeed, and if you switch off the current for the stepper motor driver you may turn the handle for the X axis quite easily. If you leave the power switched on the handle needs a higher hand force to turn the X spindle, but this works for smaller ways. The Arduino has no problems with it because a generator current from the stepper motor goes to the driver. And the driver is connected by opto couplers to the Arduino which will block any currents to the Arduino.
@@prof-rieg Many thanks - you have put my mind at ease. At 73 years of age learning new tricks is quite difficult. I have been waiting 5 months for my mini milling machine which now is due in the next two weeks. I have spent the last month learning how to program the Arduino (Paul McWhorter's TH-cam course) and whilst still at an early stage I can follow other folks code and in most cases see how it works. I have watched so many tutorials on using the Arduino and stepper motors that my brain hurts. I have to say that I found yours the most useful and the gear I have bought (due this week) is all based on your advice. I plan on fitting the Stepper to the opposite side of the lead screw as it fits in better with the space I have to place the machine in. I saw in one video that if 5volts is put onto the Enable pin it turns the Driver off. Would that be a good method to turn it off and move onto the handle or would it be better to switch the +24volts from the power supply? Regards Jim
It is as follows: stepper motor is connected to stepper motor driver. The stepper motor driver is connected to the Arduino, but, as there are internal opto couplers in the driver the motor kann do no harm to the Arduino.
You do not. You can buy a ready to use stepper signal generator module on eBay for less than $10, add stepper driver, stepper motor and power supply. Wiring is quite simple. There are many videos how to do it. Here is one th-cam.com/video/stxFDjTuzkA/w-d-xo.html
Now something to keep the chips from ruining the electronics. I machine way too much to ever have a clean shop like that 😁
great work ,where can i download the sketch for the arduino thanks
Great job. I'm trying to install the system on my mill. I'm just missing the arduino sketch. Would you please help? I'm unable to cpy it from the video. Regards
I am trying to get to grips with the electronics involved and I am a little confused here. When I look up the motor you are using all info I can find says 3.87Volts. Where are you picking up that voltage from? The Sunpower power supply shows an output of 24volts.
Jim
Un lavoro fantastico 👏👏👏💪🙋🏻♂️
Mille grazie!
Hi again - I have just been looking at the circuit diagram and must ask this question. When you have finely adjusted the 10K potentiometer to a feed speed that is satisfactory and completed one pass over the object you are milling and now going back in the opposite direction do you just flick the direction switch or do you stop the feed first? If you slow it to a stop using the 10K pot you will then have to adjust the speed at every pass of the cutter left/right. If I wanted to leave the potentiometer setting alone and stop the traverse before changing direction would switching +5V onto the +ENA pin of the driver do that?
Thanks in anticipation.
Jim
Hi Jim. Better look video no. 186. This is an enhanced version of the power feed, and the English version of this video will be published in one week.
Here we have two switches: Go and L / R (left/right). So, if the slide is in the, say, very left position, first stop the feed by the Go switch and then switch L / R switch to the right position and enable "Go".
@@prof-rieg Many thanks for the very swift reply. I shall watch the video186 and look forward to the English version in a weeks time.
Thanks again.
Jim
I would reenginer the coupling set up ..your now using twice the area
What are the feed rates in mm/min? Or stepper motor rpm.
Cool work 👍
Thank you!
@@prof-rieg and you
servus! how many Nm is your Nema 23? thanks
Pd. Really good job!
12 Nm . You are welcome!
Can I use nema 23 for manual surface grinding machine, bed size with 400 mm ×150 mm, which has normal screw rod not ball screw rod .
Yes I guess so. The nema23 ist quite powerful.
I have discovered the answer to my previous question but could someone please give me an answer to this one/two. After a lot of watching power feed setups/forum discussions on stepper motors I came across a couple of instances where there was a warning about operating the mill using the handle after fitting the power feed. There was a claim that doing so caused the stepper motor to behave as a generator and feed current back into the driver and Arduino with possible disastrous results. Is this correct? When turning off the power feed to use the hand wheel is there an order in which to do so? ie Power to driver followed by Arduino or vice versa?
Thanks in anticipation
Please see my latest video on channel LSCAD: There is a Nema 34 stepper motor installed as powerfeed, and if you switch off the current for the stepper motor driver you may turn the handle for the X axis quite easily. If you leave the power switched on the handle needs a higher hand force to turn the X spindle, but this works for smaller ways. The Arduino has no problems with it because a generator current from the stepper motor goes to the driver. And the driver is connected by opto couplers to the Arduino which will block any currents to the Arduino.
@@prof-rieg Many thanks - you have put my mind at ease. At 73 years of age learning new tricks is quite difficult. I have been waiting 5 months for my mini milling machine which now is due in the next two weeks. I have spent the last month learning how to program the Arduino (Paul McWhorter's TH-cam course) and whilst still at an early stage I can follow other folks code and in most cases see how it works. I have watched so many tutorials on using the Arduino and stepper motors that my brain hurts. I have to say that I found yours the most useful and the gear I have bought (due this week) is all based on your advice. I plan on fitting the Stepper to the opposite side of the lead screw as it fits in better with the space I have to place the machine in. I saw in one video that if 5volts is put onto the Enable pin it turns the Driver off. Would that be a good method to turn it off and move onto the handle or would it be better to switch the +24volts from the power supply?
Regards
Jim
It is as follows: stepper motor is connected to stepper motor driver. The stepper motor driver is connected to the Arduino, but, as there are internal opto couplers in the driver the motor kann do no harm to the Arduino.
That motor and its support weight a lot at the end of that table; if you care for precision milling, you take them off. Ask me how I know that 😀
Thank you for your hint.
If I just want to be able to move the table and not do CNC would I still need the Arduino?
Indeed, yes. The Arduino gives the pulse for the amplifier which powers the motor
LSCAD thanks
You do not. You can buy a ready to use stepper signal generator module on eBay for less than $10, add stepper driver, stepper motor and power supply. Wiring is quite simple.
There are many videos how to do it.
Here is one th-cam.com/video/stxFDjTuzkA/w-d-xo.html
RoK. thats exactly what i used
Would you be willing to share the sketch?
Of course but the sketch code is in the video.
Since you already have Arduino driving the steeper, you can easily add extra functions -> th-cam.com/video/IWZXnLevaPU/w-d-xo.html