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3018-Prover 300 Watt Spindle Upgrade with GRBL control

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Sainsmart 300 watt spindle motor kit installed in 3018-Prover and wired so as to allow GRBL control of spindle speed and spindle power. Be sure to refer to the diagrams in this video to ensure proper connection to the mains. The drawings include a GND connection. The GND terminal is connected to the case. Note also the addition of the RC filter to smooth the PWM output. Thanks for watching.
Important: Do not confuse this power supply with the cheap 100v power supply that comes with a 500w spindle motor! Those power supplies are not isolated from the mains and are very dangerous! They will not work with this control method.
Circuit Diagram: (added PWM filter for stability)
www.chemroc.co...
Links to Products:
3018-Prover:
www.sainsmart....
300 Watt Spindle Kit:
www.sainsmart....
Aluminum Spindle Holder for 3018-PROVer:
www.sainsmart....
Solid State Relay
www.amazon.com...

Опубликовано:

5 сен 2024

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Комментарии : 92

@FlatFootStudios 22 дня назад

Excellent video! Very well explained and the wiring diagrams you included were outstanding. Thank you very much for taking the time to put this video together!

@artadams1 Год назад

UPDATE: performed the upgrade, wired with the relay, works like a champ! Thanks again!

@SteveBatsford-tp1ho Год назад

I just upgraded my 3018 ProVer with the SainSmart 300W spindle and the aluminum carriage upgrade also. Same spindle asshown in your video. Followed all of your instructions and it works great. Thanks so much for taking the time to figure this out and sharing it.

@bami2 Год назад

Very nice video, it's also a bunch safer since I've noticed that some of the power bricks for the 500W motor, the adjustment potentiometer is referenced to mains which could give some shocking results if something were to fault with the grounding. This takes that possibility entirely out of the loop.

@josemanuelperez3818 Год назад

I wonder why the hell Sainsmart sells the raw thing and doesn't mind to have this to work well with their machines. The modifications you proposed are basic and essential for a good experience. Your video decided me to buy this motor upgrade since now I know this can be controlled via software. It's Sainsmart who should thank you, but since they won't probably do, it's me who gives you a BIG THANK YOU. :-)

@lanierje Год назад

Wow! Thanks for the kind words. I hope this works well for you.

@josemanuelperez3818 Год назад

@@lanierje Just a quick note to let you know I finished today the upgrade you proposed. I screwed the power supply on bridge's back and placed filter, power switch and SSR and stuff on a closed box protected against dust and shock hazard. CNC gained 100% on safety and reliability having the new spindle (that looks much better than the original one) to work under Candle's command instead of being an alien device. In addition with the aluminum holder the machine now looks stronger than ever! We know Prover is a cheap machine and we can't expect miracles from the tiny guy, but what you researched and suggested on your video made my day. Thanks again for your kindness by sharing your knowledge.

@lanierje Год назад

@@josemanuelperez3818 Congratulations on completing the project. Again thanks for kind words. Later my friend, Jim

@artadams1 Год назад

Thank you for posting this video, as I'm doing exactly the same thing right now to my 3018. You saved me a ton of research! I dig the anderson power poles, I use them alot in ham radio.

@ChasenWolf Год назад

You're a saint for these videos! I don't know much about wiring but still was able to follow well. Thank you, very glad to have software control

@lanierje Год назад

Thanks. Good luck my friend.

@scaletownmodels 6 месяцев назад

I just got a 4040-pro and picked up a 500w spindle for it. They made a custom control board for this unit and disappointingly they did not break out any control signals. So you only have the main 0-24vdc spindle control to work with. Doable certainly but not as nice. No other digital outputs that could used for other accessories either. The 500w spindles power supply is the type that has a dedicated input of 0-10vdc for Mach3 control so a simple voltage divider should work ok. I'd prefer something with some isolation tho. The lack of any standards for these desktop systems is a problem that would be simple to address. Some standard signal levels and matched impedances. Really, given how powerful micro controllers are now and how easy tach feedback is to process, for a few dollars these interfaces could be made all digital. Maybe use I2C or RS485.

@SamA-jg8vy Год назад

Awesome video. Thank you so much for sharing this. It certainly saved me a little bit of head scratching.

@michaelmessuri7746 Год назад

Just finished making these mods and everything is working as shown. Thanks!!!

@Sherify2011 2 года назад

You are a great value to everyone, especially for beginners like me .. I benefited a lot from your wonderful videos .. I kindly request you to show us the connections of the GRBL control board to and from it in case of upgrade to spindle 500w, thanks

@garyvogt4720 2 года назад

Nice instructional video. I have one comment. In the video you connect line voltage through the SSR, and neutral directly to the PS. I agree that is correct. In the wiring diagram you show line connected directly to the PS and neutral through the SSR. Your wiring diagram needs to be corrected.

@jongrace9133 Год назад

Forgot I enjoyed your video and got a lot from it.

@mikejackson9585 3 года назад

Thanks for the tip on the pot replacement. I had seen someone else wire in a PWM to Analog converter for that which is not a bad way, but the direct to board header with a pull up seems a little easier and cleaner to set up.

@raytristani 2 года назад

This was VERY helpful. Thank you!

@lakotacamp8533 Год назад

I know this was posted awhile ago, but thank you for doing this. I'm a little surprised that there are no instructions for set up included in the kit outside of a single unlabeled diagram, no tutorial videos or steps for set up on the website, nothing. Would it be possible for you to add links to the other electrical components that you used that weren't included in the kit? Such as the plugs and connectors you are using?

@teambob00 2 года назад

Thank you! Did exactly this with great results

@warrenking1815 2 года назад

Good job , I like your technique. Thumbs up!

@vegsalad 3 года назад

Very useful video thanks. But as someone who nearly killed himself once doing something similar and suffering electrical burns too, I feel obliged to point out the lack of an earth on the video on your power supply makes this a deathtrap. All you need is a bit of metal eg swarf in the wrong place and you can have a live case waiting for you to touch it. Please bear in mind this video is being viewed in places where mains voltage is a more lethal 230V ac. Just run an earth wire from the supply to the earth on the psu and check for continuity to earth on the case too.

@lanierje 3 года назад

You didn't look at the diagrams I included. The power supply is earthed. The diagram shows L N and GND. (The case is connected to GND terminal). The V- is isolated from ground and should stay that way. The cord I patched in to make this video was temporary. Look at the diagrams. One thing I should point out is that this is an isolated power supply. There are power supplies out there with 500 w motors that are referenced to the mains. Do not attempt this with that type of power supply.

@vegsalad 3 года назад

@@lanierje Did see the circuit diagrams but felt it was worth mentioning for those watching the video who don't follow the diagrams - once bitten twice shy..

@lanierje 3 года назад

@@vegsalad Noted. Thanks. I will add a comment in the description to make sure everyone understands.

@transientaardvark6231 7 месяцев назад

The loss of speed control is one of the biggest barriers to me upgrading, my spindle, so it is interesting to see exactly what the input looks like. I was toying with the idea of a digi-pot. One thing though, do you not have stability problems with using the variable output voltage as a pull-up - in the sense that if the output voltage wanders higher, it increases the voltage on the pull-up, increasing the demand voltage which increases the output voltage etc. And similarly if the output voltage wanders downwards.

@lanierje 7 месяцев назад

If you do the math you will see it is stable. High value of pullup resistance vs much lower source impedance. Also at lower voltages it practically dissapears.

@jaimerodriguez3864 3 года назад

Awesome! I bought a 500w sindle and it doesn't even reach 200W on load so I decided to go with the Makita Compact hand router and see how it goes.

@lanierje 3 года назад

I have the Makita 1.25 HP router on my Sienci Longmill. I have no GRBL control of speed with it, but I may upgrade that one to a watercooled spindle motor and build a control circuit for it. Thanks for watching.

@JohnColgan. 2 года назад

I think you would need at least 48v DC to reach 300w and 100v DC for 500w

@slocumdesigngroupllc.4477 2 года назад

Fantastic video thank you!

@mikecerwin5293 2 года назад

Thanks for putting this together. I've been adding these same upgrades to my 3018-prover and the tips for setting up the GRBL control were just what I was looking for! A few comments/questions: 1. What wattage are the series resistors you are using for the PWM filter? 2. The Wiring Diagram lists the connection between the power supply and the CNT port on the controller board as using JST PH connectors. These are JST XH connectors on my control board and power supply. I'm not sure if I have a newer hardware revision, but you may want to consider making a notation on the diagram.

@lanierje 2 года назад

You can use 1/4w types but you can probably get by without the filter resistor. I am using a .47u across terminals with no resistor. It is stable on my setup. You are correct on the JSTs (VH and XH on my board)

@007jojoo 2 года назад

@@lanierje Could you show the wiring diagram for the .47u?

@lanierje 2 года назад

@@007jojoo www.chemroc.com/pictures/RU-vid/SpindleCircuit47.JPG

@007jojoo 2 года назад

@@lanierje Thanks you

@user-cl1dn9fk8p 6 месяцев назад

Hello. Which GRBL card are you using? mine does not have a variable 5V output depending on the Candle command! Thank you for the answer.

@jongrace9133 Год назад

It seems like all the added components and power supply should be housed in some sort of box. being new to the CNC as well to the needed wiring skills it's a littlie over whelming. Can you suggest a box to used. Have a little background with computers, power supplies normally have heat sinks and fans would seem like something to do if in a box.

@richritchey8533 8 месяцев назад

Thank you for posting such an informative video! I have a Genmitsu 3018-PROVer V2 that I would like to do the same thing to, but the control board is different. There isn't a 0-5V connector on the board anymore, and instead, on the right side there is a 3-pin laser JST connector (12V, Ground, PWM,) for a laser, and a 2-pin JST connector for laser air assist (M-, M+). Any thoughts on how to work this magic on the new board? At the very least, I can connect to the original spindle wire to enable the on/off software control, but I'd love to eliminate the potentiometer so the RPM can be software controlled as well. THank you for any additional guidance, and thanks again for putting this out there for the rest of us!

@lanierje 8 месяцев назад

The 0-5V can be filtered PWM. You could just build an RC circuit to filter the PWM. You would need to know the PWM frequency to select your filter cutoff frequency. Filtered PWM is DC with some ripple.

@jaa522 11 месяцев назад

Do you need to supply yourself a 3 prong power cord for the GRD L and N terminals on the power supply?

@Lawzy 3 года назад

Another great video. Helpful setup, but always wary of having easily accessible mains terminals. Not sure whether there is any way around this other than to be careful when using it.

@pauls.5815 2 года назад

You don't like XT connectors? I use deans and XT mostly. That looks like a neat connector though. I am a connector nerd, love good connectors. Thanks for showing it.

@ProfileP246 Год назад

I have one of these machines coming with the view to do this upgrade when I receive it. Do you have a link for the kit you used here? Fantastic and coherent Video thanks.

@titolindj 2 года назад

Thank you !! I couldn't figure how to get rid of the potentiometer!! On a different subject, by any chance have you tried the genmitsu laser using that spindle mount? Do you know if it fits? thanks!!

@XDFTube 3 года назад

Very helpfull, lot of thanks

@ClassicConcreteDesign Год назад

Hi, great video! Clear and concise. What did you use for the power supply? Does it need to be a three-prong plug or can I just use a two-prong plug from a broken lamp etc?

@lanierje Год назад

You need to use a 3 prong plug for safety. The power supply is linked in the description as part of a kit from Sainsmart. Also there is a link to a power supply in my 500 watt upgrade video.

@slirpslirp Год назад

amazing

@michaelhoolahan2602 9 месяцев назад

Hi great video hope its not to late to ask a question as i am fairly new to cnc and a real noob at electronics and am a little confused. There are 3 diagrams between the video, notes and comments, video had no pwm filter, the other 2 did but on has a .47uf capacitor and the one from the notes has a 1uf capacitor with a 100 ohm resistor. so do i follow the one from the notes with the resistor and 1uf cap? i see there are different types of capacitors and resisters, which would be recommended?? ex ceramic capacitor? ex 5% 1/4W Carbon Film Resistors? any other helpful tips on wiring pwm filter... that wasnt shown in the video... thanks

@lanierje 9 месяцев назад

In most cases a .47uf capacitor across the control terminals will be fine. Try that before you install a series resistor. The type of capacitor is not critical. 1/4 watt resistor is fine if you use the RC filter.

@scottball8919 8 месяцев назад

Thanks for the great video, I have a few comments and questions. First, I am able to control spindle on/off through software without the relay. Should I be able to do that? Second, the spindle is meeting the same rpm's through software without the resistor.(Tested with a laser rpm tester) Will this have an adverse affect over the life of the spindle. thanks in advance.

@lanierje 7 месяцев назад

Without the relay, the motor can stop but there may be a few ma of current flowing. I prefer to turn off the power supply. The pullup resistor allows full output voltage from the power supply. Only a few volts different and a few RPMs higher. The pullup compensates for the moderate output impedance of the driver.

@scooterphillips803 3 года назад

Great video. Concerning the pullup, I'm assuming that's a small current flow. Will a 0.25 watt resistor suffice?

@lanierje 3 года назад

Yes it will

@pauls.5815 2 года назад

So hard to find info on the 3018s individually. They are all clones but not 100% clones. Probably just going to have to pick one and upgrade as needed. Mostly concerned about rigidity. Is the metal spindle holder more rigid? Probably could use better bearings. You can find upgrade parts but will it fit on this brand.... Was trying to plan everything out before buying. Just going to get the sainmart one and go for it.

@heeder777 3 года назад

Very helpful video. I ordered the SSR today and the spindle mount. I have been using a 3D printed mount but the stepper sits uncomfortably close to the motor fan and I'm sure the aluminum will be a little more precise, I manly do engraving of text and not so much carving of 3D art. I am using the potentiometer for the speed control but since it is independent of the board, in a crash or lock situation, the spindle has no automatic way of shutting down even though I never leave it unattended. Have you checked to see if the RPM on the Candle software is accurate? I plan on checking it with an optical tach once all the parts arrive, get it assembled and recalibrated. Thanks again.

@lanierje 3 года назад

The candel software values are relative. My 300w motor runs at 13400RPM no load. I enter that in candle as a maximum. Therefore, values below that are relative to the maximum in percentage. They do not equate to accurate values of RPM, only relative values of drive voltage.

@murilomarques3532 2 года назад

Man you r like a wiring witcher omfg . I Just bought couple Days Ago one of these beauties 30x18 500w. And i wish to know wich the relay model please Man ,! Your the best

@rgbailey Год назад

Are you willing to share how you arrived at using a 100K resistor connected to the output of the power supply and not a smaller resistance connected to the +5vdc pin on the pot connector ? Also, why 100K? Nice design, I am getting ready to implement a variation of it on my system. Understanding your choice on the pull up resistor would help. I am concerned about voltages >5vdc to the board if the 100K fails shorted or its resistance drops significantly. I have seen resistor values drop with age/abuse a couple of time over the years.

@lanierje Год назад

The value was calculated by use of Kirchhoff laws. You can't use a smaller resistor from the 5 volt supply because the 1K source impedance (even at zero) can't sink the reference. The calculated 100k provides additional current to the reference in order to allow full output. At lower voltages it becomes less relevant. The power at max in the 100k resistor is .02 watts. Metal film resistors are very stable.

@RobsReels 2 года назад

Thank you for this video. I bought the relay off your Amazon link. But honestly I am a neophyte when it comes to electronics. So I don't know where to get all the other connectors and the resistor any ideas. Does radio shack still exist? Thanks again

@JohnColgan. 2 года назад

Why was your voltmeter registering fluctuations before you connected the probes? Was that induced voltage from proximity to other sources?

@lanierje 2 года назад

Random noise in millivolts, not volts.

@rubengo9440 Год назад

Hi! I don’t know much about electrical or electronic things. The spindle motor voltage supply is 24v-48v. The final voltage you measured is 51.6v and this powers up the spindle motor. Is it ok to supply the motor with 51.6 when the specs is up to 48v only?

@lanierje Год назад

Yes it is OK and insignificant

@robertkoval8406 10 месяцев назад

Is it possible to use this approach with a 24V motor and power supply?

@lanierje 10 месяцев назад

Yes. There us a 24v version of this power supply.

@larryclowdus6230 5 месяцев назад

I bought the 300W spindle kit to go on the Genmitsu 4040-Pro CNC. Will this same circuit work with the 4040-Pro GRBLcontrol board?

@lanierje 5 месяцев назад

I don't know. I can't find any information on that control board. SainSmart needs to provide more tech info on their products.

@georgeinnis877 2 месяца назад

@@lanierje No, not unless you want to open the control box and do a lot of digging. The only output that is available is the 0-24v spindle drive. However that is sufficient, with a slightly different circuit.

@user-zf3lj5sv1v 2 месяца назад

@@georgeinnis877 Could you describe this circuit? I have a 4040-reno, and I suppose the control board is the same.

@ronz1268 Год назад

How many watts are the added resistors?

@samhoodak8075 2 года назад

Awesome video. I am using the 3018-Pro board and it does not have the 0-5v connector. Is there another way to control the output voltage through the controller?

@lanierje 2 года назад

if there is a PWM output it can be RC filtered to dc, then use a voltage divider to allow maximum 5VDC as a control voltage. I don't have one of those boards so I can't give you actual values to use.

@markerbaugh4016 3 года назад

I see in the schematic that you are using the SS relay to switch the neutral mains line. Is that preferable to switching the hot?

@lanierje 3 года назад

Operationally the same. It is in series with the PS input. Depending on how you treat this, it may be safer to put it in the L instead of the N. That way the only hot is on the terminal of the sw instead of on the PS. There are no guarantees either way. SSRs do fail or become leaky. Best to cut the mains completely when working on your PS. There should be a power switch in the mains L to cut power to the entire power supply circuit. Also take care to physically isolate the power supply from the CNC so that metal chips or metal dust can't get in.

@gwerhart0800 3 года назад

I just tried to hookup the solid state relay to the power supply to get the on/off control and the spindle voltage output on the PROVer controller and the spindle speed is going up and down. This is with the potentiometer for speed control and not hooked to the 0-5v connector. Measuring the AC voltage showed it going up/down similarly to the spindle motor voltage. It appears that the solid state relay is having issues. I bought the one on your list of materials. I am not an electrical engineer and I don't own an oscilloscope. Any chance this is a shielding or interference issue? Thoughts?

@lanierje 3 года назад

I was able to duplicate the problem at low levels. You just need to filter the pwm a bit. An easy way is a 1uf capacitor across the SSR trigger terminals. Better still a series resistor of 100 ohms in the plus line and the 1uf capacitor across the terminals. I just tried it and it works fine. The 100 ohm series resistor is not only a part of the RC smoothing filter, it is also an inrush current limiter.

@gwerhart0800 3 года назад

@@lanierje Thanks, I will give that a shot. I finally clued into the fact that the 24v spindle output is PWM and that might be causing the SSR to flicker the output.

@stevenshaikh2601 Год назад

Hi Thank you so much for this Lanierje, I understand basic circuitry but beyond that my knowledge is limited, on the circuit diagram you have a PWM RC filter so is the resistor 100 ohms and the capacitor used is 1UF is this correct and is this Filter required or is optional Can anyone help me and answer this question. Also where can I find these resistors and Capacitors as on Amazon they have huge bundles. Thank you in advance.

@lanierje Год назад

The PWM filter is RC but you could probably just place a .5uf capacitor across the SSR terminals. In any case, it will always work well at high drive levels (i.e. high rpm). The filtering is to make the circuit stable at low drive levels. Thanks for watching.

@stevenshaikh2601 Год назад

@@lanierje no Thank you so much for responding. I am so grateful for your help. Have a wonderful evening and weekend

@TheStarrman03 3 года назад

How do you power the power supply?

@MrRevolverkiller 2 года назад

so im gonna buy the 100k resistor, i have a choice of .25, .5, or 2w resistors. which value should i get?

@lanierje 2 года назад

1/4 watt is plenty

@mlevesque 2 года назад

Is it possible to use SSR 40DA, SSR 48D40 is not available near me and on amazon ?

@lanierje 2 года назад

It should be fine

@mlevesque 2 года назад

@@lanierje Thank you so much

@stevec5000 2 года назад

Why get only a 300 W motor?

@lanierje 2 года назад

Its lighter than the 500w motor (I did a video on the 500w). Less stress on the frame and the 300w motor seems to have lower eccentricity. (vibrates less)