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I know this is an old video but have to say thanks for this informative video. I have upgraded my CNC 3018 Pro with a 300w Spindle and the SSR and PS as shown in the video. On the GBRL controller I got, there is a blue connector for a 48v PS. I used that and am able to control the 300w motor from within software. All that is required is to set the PS knob to Max voltage. These settings will not change, but the software will vary the speed of the Spindle. I also downloaded a balance fan, took off the cheap Chinese's unbalance fan, and the noise had reduced to almost 92%. The door is 6 feet away from my machine and one will not know that the machine is running. My final upgrade is to extend the bed that will bring this into a 3040. Thanks once again.

I know this an old video but recently purchased a 3018 prover V2 and upgraded the spindle as you did and trying to wire as you did. On the new main board I don’t have the 0-5 v plug as yours does. Can I not plug that plug into the spindle plug?

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!

Hi ! why is the minimum fan speed only at voltage 53.5V? how to make at minimum voltage of 48V?Thanks !

What control board are you using on the cnc?

Damn I have been looking for this for ages now thank you so much ❤

Thanks greatly dear friend for this Educative video... Sorry for asking for the circuit diagram of the 10k resistor to the terminals and the link between address port and the output port. Thank you very much

You are a genius, doff my cap to you Sir 🎩 Super helpful with the wiring diagram as well and the links Fabulous, thanks for sharing 👏👏👏

48v × 10amps = 480w so thays fine... What about using 80v ×6amps = 480w Whats the difference in preformance.. You're still 20watts under its rated and 20watts under the OEM power supply. I assume with 48v and more amps it runs slower than 12k rpm but has a higher torque The OEM is 0-100v at 5amps. Voltage is usually attributed to speed and amps is torque 🙃 It would be cool to get you to do an experiment with the different supplies to see what the difference in preformance really is. I'd like to see the rpm of your spindle tbh. Also why did you jump 100k ohm resistor to the 50v output ?? Like thays doenst make sense. You're pulling up to 50v through 100k resistor.... what in the hell ?

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?

dident work this whit the stock psu from the 500w spindle?

Was the 500w spindle worth the effort? Very informative video Thank you.

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.

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.

Can it also work on genmitsu 3020 pro Max?

this is great information, thank you, question about the pull up resistor, how do you figure out the size needed, my power supply say 0-10V and you said yours is 5V,

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.

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.

Hi great video. I have got a Huawei PSU480A, got can bus working, get similar reports, tried the same address / message as for R48850G2 to set the voltage but does not work. Have you, or somebody else any lead to instruction set for Huawei PSU480A ? Thks in advance.

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!

can i use this setup also on my twotrees TTC450?

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

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

How to leave this power supply working at 45 volts

Thank you for your support, sorry in the software as I change the address from Send to Receive.

Mr Lanierje Excuseme sir, all these data like 54570, hexadecimal D52A and 010000000000 as you got them.

Hello, could you tell me the wattage of the 100 ohm resistor and the wattage of the 100 Kilo ohm resistor?

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

Very good video. How is the can buss connected to the powersupply?

Hi. Do you have current limit modification ?

Have you use both this and a PWM controlled spindle motor and if so have you noticed a difference? Have you done a calibration?

Very clever technology

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.

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.

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

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.

I was able to find all the connectors except the 2 pin plug that you used to get the 5 volts to up the voltage with the pullup resistor. What is the proper name and where did you acquire it. Thanks Jon

Have a question, where I live all the electronics stores have went out of business so I'm at a loss where to get some parts as well don't know what to call them. First you made a new 3-wire plug for the connector on the power supply, what is it called and where can I order it. Second, You added the 100k resistor and plug it into the 5v that was on the mother board, what is the connector called. Third, I have the original wire that connected to the spindle motor but it's too short, can I use the Anderson connector to lengthen the wire or should I get a new one, what's it called. Know this must sound crazy but because of Corvid everything closed up. Your help is apricated.

Thank you very much for the video, it's great.

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

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.

Do you have links for the filters and resistors. I’ve ordered a lot of wrong parts in the past and I’d like to save a trip to the electronics store to look like an idiot lol

Much obliged.

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?

Thanks, Lanierje. After a year of busy work & frustration. I finally made it worked. Problem was controller on prover had defect & Sainsmart graciously replaced free of charge. I am thrilled & thankful for your video.

i would love to know if you can monitor the real time current draw over Canbus? I'm thinking about charging batteries and being able to kill the PSU when current draw drops below say 1 Amp, meaning batteries are fully charged.

No it's not

Thanks for the great video. Way better solution than most others one can find on YT. A question, I recreated your setup exactly, also using the 10k resistor. However if I run the spindle at max, the output voltage reads 52, not just 50.7 as in your case. Maybe I am missunderstanding something fundamentally but since the PSU is for max 48 and so is the spindle, is that an issue?

Found and installed the software on my computer. Copied/added both the default & max voltage frames exactly how you have them(thank you!)! Located a decimal to hex converter calculator to convert minimum voltage of 41.5V. Following your lead (hex = a55a=41.5V) Wondering if a macro of some sort could be used to set on the fly voltage and current without manually sending every minute? Any idea if these frames/code would work on any other Huawei power supplies, and have you discovered any other functions? ((Thanks again for sharing information! PS - I just ran/opened com port for kicks in the App without hardware and of course rec'd an error message, but the error message was in Chinese so totally indecipherable and useless -are all error messages in Chinese?

I use the exact same method and power supply as yours, but no success so far