The SuperLongBoard, or “SLB“, is an advanced, next-generation, plug-and-play, CNC controller for all generations of the LongMill. The SLB allows your CNC to run faster and more reliably. We believe the SLB is the most significant upgrade in functionality and performance for all LongMills, past and present.
Each order will comes with:
A SuperLongBoard in a robust aluminum enclosure with 4 mounting holes for screws sized #4 to #8
Independent E-stop with 3 customizable action buttons
2.5m E-stop cable
1m USB-C to USB-A cable
Mounting bracket, specifically for the Y-axis of a MK2/2.5 (not MK1)
The only other things you’ll need to purchase are:
For custom setups, the SLB ships with all 3.81mm green pluggable terminal connectors by default, plus we can include the 5.08mm connectors for connecting power and motors if you email us before ordering, but any remaining ones you’ll need to get yourself
Additional information
Weight
3 lbs
Dimensions
15 × 6 × 3.5 in
Measurements
The SuperLongBoard is a typical PCB with a roughly 210 x 100 x 20mm (8.3x4x0.8”). You can find full details on the technical manual of the SLBResources page.
Recommended Add-ons & Accessories
We highly recommend the following products to maximize your SuperLongBoard functionality:
For custom setups, the SLB ships with all 3.81mm green pluggable terminal connectors by default, plus we can include the 5.08mm connectors for connecting power and motors if you email us before ordering, but any remaining ones you’ll need to get yourself
FAQs
Q: Can the SLB work on my LongMill?
A: The SLB is compatible with ALLLongMills. No matter what size, generation, or version you have, the SLB will plug and play with existing LongMill hardware of all generations with minimal settings changes. We believe this will be one of the most substantial upgrades any LongMill can have, past or present!
Q: Will the SLB come default with the LongMill in the future?
A: Yes, starting with our new batch of MK2.5 LongMills the SLB will now ship standard with the machine. This also comes with an associated price increase to reflect the additional value we believe the SLB provides.
Q: Will the SLB work with my CNC?
A: If it’s a LongMill or AltMill then definitely it will. Otherwise, your CNC should be supported so long as it’s a typical hobby CNC setup with open-loop Nema 23s. As we roll out the SLB we’ll begin hearing back on other successful configurations and update this ‘Answer’ appropriately, since otherwise we can’t provide a definitive guarantee other than to say that it’s very likely to work for most hobby CNCs. Other machines that have been proven to work so far include Onefinity.
We’ve earnestly done our best to ensure the SLB would be ideal for any typical setup since the inspiration for the SLB came from trying to take things that are normally only available on more expensive and ‘closed’ boards and bring them into the open source domain and at a more affordable price for the benefit of as many hobbyists as we could. This means that although you will need to change certain settings to match your specific setup, the SLB will support a range of machines and accessories including 5/24V limit switches, touch plates, tool length sensors, laser diodes, external 4th axis, and more.
Q: What about if I want to use higher voltage or external motor drivers?
A: We do currently have another version of the SLB in the works that we’re calling SLB EXT since it’ll support much higher voltage and external motor drivers for closed loop support as well. This will extend even further SLB support for a broader range of machines and setups closer to production-level. This board will be what powers our AltMill CNC and you’ll be able to see more updates about it on our blog as we begin making deliveries.
Q: How can I know if the SLB is right for me?
A: There are many other offerings on the market that come with a wide range of features, simply put the choice between these will always come down to budget. If you don’t think you need the features offered by the SLB then it’d make more sense to spend less money. In this case consider getting a more typical grbl board or some of the newer x32 hobby CNC boards that might require more DIY setup time for wiring or programming. For instance the Blackbox x32 has the benefit of a direct wireless connection but less extensibility. If instead you feel like you want to pull all the stops to support a higher-end CNC or use more advanced features then you might want to increase your budget and look into a Centroid, UCCNC, or Mach setup. We believe though that we’ve done our best to match the SLB up with the mid-level hobby CNC community where it makes sense to spend $150-200 on a controller to really unlock all the capabilities you’d be looking to expect out of your $1000-4000 CNC.
Q: Is the SLB open source?
A: Yes, the SLB, firmware, and related software like gSenderwill be released open source. This may come at a later date when we feel that our designs are finalized and should be available soon on our Resources pages.
Q: Will the SLB support external drivers?
A: Although we will support an external A-axis driver support to allow full 4-axis motion with the Vortex Rotary Axis, the SLB will not have support to external drivers for the X, Y, and Z axis.
Q: Will the SLB support accessories like the Vortex Rotary Axis, AutoZero touch plate, or LaserBeam?
Yes, the SLB will support all of our existing accessories for the LongMill, as well as opening up additional improvements and functionality to accessories, such as improved laser motion control, fully independent 4th axis control, and improved speed and sensitivity on touch probes and plates.
Q: Will the SLB support tool changers?
A: The SLB does come with the hardware to support the IO for a tool changer, such as relay control and tool length sensor inputs. However, we have not yet tested the functionality for a tool changer with the LongMill.
Q: Does the SLB come with a warranty?
A: The SLB comes with a standard 90-day warranty once it arrives at your door against all manufacturing defects. For further conditions, please check out the warranty tab on this page.
Warranty
The SuperLongBoard comes with a 90-day warranty starting at the time of arrival to the customer against manufacturing defects. Those 90 days are also covered for use of the board as long as it uses:
A correctly-spec’d and high-quality power supply like our 24V 10A or 24V 12.5A
Tested and approved firmware developed by Sienci Labs without modification to the source code
Please note that power supplies with the incorrect output voltage and/or current may damage the board. We also strongly recommend using default or recommended settings for the SuperLongBoard. Damage caused by incorrect settings may not be covered by warranty or assessed on a case-by-case basis.
This video also provides some insight on everything you need to know about setting up your SuperLongBoard
69 reviews for SuperLongBoard
4.7
Based on 69 reviews
5 star
79
79%
4 star
13
13%
3 star
2
2%
2 star
1
1%
1 star
2
2%
Rated 5 out of 5
Bogdan K. (verified owner)–
Nice quality product, will do more review when received machine and start using product.
(0)(0)
Rated 5 out of 5
Lynn STAUBER (verified owner)–
Looks good but a lot of wires
(0)(0)
Rated 4 out of 5
Jeffrey A. (verified owner)–
So mine is a DIY CNC. Mechanically, I\’m good. My weakness is learning the program. Overall good experience but I did find that looking for information on your site was a little bit all over the place. And the search didn\’t always work well. You seem to have it laid out by machine. It was a little confusing for those of us on our own.
I do believe that the SLB and the gControl Panel Computer made all the difference for me. I can see me ordering it again. I have a metal lath and a floor mill that I would like to CNC. My learning curve for now is just a small 18 by 18 DIY CNC made of plywood. A heavy 4ft by 4ft steel one is in the works.
The house I have is 1912 and would like to do all the trim Victorian style with lots graphics in the panels.
And I would like to make a stand alone wood lath that could hold a good 16\” diameter size log. Like to carve faces into tree trunks is the hope.
I have the sawmill and have been getting white oak and ash so the project list is long.
I can see me ordering again. There are quite a few DIY guys out there and the SLB and gControl could fit in well with this group.
Good job.
(0)(0)
Rated 5 out of 5
John Campbell-Brown (verified owner)–
Hi Sienci Team , Awesome in one word ,I am very happy with my SLB combined with g sender a great duo .
Do you have a download that is able to be used on a
Chromebook computer, you have probably been asked
this question before.Keep up the good work .
Great Products .. Thanks John ;
(0)(0)
Rated 4 out of 5
Jon Z. (verified owner)–
Set it up according to directions, turned it on, worked great!
(0)(0)
Rated 4 out of 5
Alexis –
I installed the inductive sensors and it doesnt detect them fast enough. It touches before it stops.
Can you help me?
Best regards
(0)(0)
Rated 1 out of 5
David Kelly –
I’M sorry to say Chris. It’s all been a disaster. Nothing I have bought from you works (and I mean, absolutely nothing). I’m relying on Jason to get the thing going, now that he’s back on deck.
David
(0)(0)
Rated 5 out of 5
Kenneth Lehmann –
It’s the first time since setting up the machine that I can operate without any problems. Completed several projects without having to restart several times.
(0)(0)
Rated 5 out of 5
Anonymous –
It’s So much better then the longboard, in every way.
(0)(0)
Rated 5 out of 5
John Buckner –
UPS is late. Wont get it until Tuesday.
(0)(1)
Rated 4 out of 5
Chris Newton –
It’s been a bit of a test working with the m/c. First, after my first successful run after purchase of your longmill the longboard crashed and died. On purchase of a new longvboard the x-axis began grinding. It took me until last week to discover the backlash needed tightening.
(1)(0)
Rated 5 out of 5
Sean Connolly –
I have been involved in this hobby for a little over one year with no prior CNC experience. Purchased the MKII and assembled it by following along with the excellent documentation and watching the videos with no issues. Recently, upgraded to the SLB to use with the PWNCNC spindle and experienced no issues upgrading from the Longboard. There are many people in the community helping out which is very much appreciated as I learn this hobby. The projects I have done are small sign v-carves and am now doing epoxy inlays and enjoying it very much! I’m in awe of what people are making, it’s truly inspirational.
(0)(0)
Rated 5 out of 5
Wally Cook –
I ordered the superlongboard to address a particular issue when using the laser. (Christmas present) My Microsoft Surface laptop USB could not properly operate the laser. I had to use a different laptop. The SLB resolves that issue so now I can carry on with the Surface laptop in my shop. Some other feedback. The SLB arrived as predicted by Sienci. The install was an absolute “no brainer”. Excellent guidance for swappiing out to the SLB. Also, the reason I knew about the laptop source of my laser issue was because of the personal online trouble shooting provided by Sienci. Thanks. Wally Cook P.Eng. CRSP
(0)(0)
Rated 5 out of 5
Sébastien C. –
Super
(0)(0)
Rated 5 out of 5
GEORGE Corning (verified owner)–
Great Machine
(0)(0)
Rated 5 out of 5
Brian Mo e (verified owner)–
A great upgrade!
(0)(1)
Rated 5 out of 5
Mark Lesinski (verified owner)–
Set up is easy-to-use
(0)(0)
Rated 5 out of 5
Mike Nolting (verified owner)–
All I can say is wow, this SLB is an awesome piece of gear. Very easy to install and the benefits are substantial. I find the machine runs a lot faster than the old board. The support from Sienci has been great, always there to answer a newbies questions.
(0)(0)
Rated 5 out of 5
Thomas Loomis (verified owner)–
I finally installed it. What a difference! Issues I was having with the axis stop sensors went away. The machine is very stable, no more disconnects using usb. Very smooth and fast. Couldn’t be happier.
(1)(0)
Only logged in customers who have purchased this product may leave a review.
Bogdan K. (verified owner) –
Nice quality product, will do more review when received machine and start using product.
Lynn STAUBER (verified owner) –
Looks good but a lot of wires
Jeffrey A. (verified owner) –
So mine is a DIY CNC. Mechanically, I\’m good. My weakness is learning the program. Overall good experience but I did find that looking for information on your site was a little bit all over the place. And the search didn\’t always work well. You seem to have it laid out by machine. It was a little confusing for those of us on our own.
I do believe that the SLB and the gControl Panel Computer made all the difference for me. I can see me ordering it again. I have a metal lath and a floor mill that I would like to CNC. My learning curve for now is just a small 18 by 18 DIY CNC made of plywood. A heavy 4ft by 4ft steel one is in the works.
The house I have is 1912 and would like to do all the trim Victorian style with lots graphics in the panels.
And I would like to make a stand alone wood lath that could hold a good 16\” diameter size log. Like to carve faces into tree trunks is the hope.
I have the sawmill and have been getting white oak and ash so the project list is long.
I can see me ordering again. There are quite a few DIY guys out there and the SLB and gControl could fit in well with this group.
Good job.
John Campbell-Brown (verified owner) –
Hi Sienci Team , Awesome in one word ,I am very happy with my SLB combined with g sender a great duo .
Do you have a download that is able to be used on a
Chromebook computer, you have probably been asked
this question before.Keep up the good work .
Great Products .. Thanks John ;
Jon Z. (verified owner) –
Set it up according to directions, turned it on, worked great!
Alexis –
I installed the inductive sensors and it doesnt detect them fast enough. It touches before it stops.
Can you help me?
Best regards
David Kelly –
I’M sorry to say Chris. It’s all been a disaster. Nothing I have bought from you works (and I mean, absolutely nothing). I’m relying on Jason to get the thing going, now that he’s back on deck.
David
Kenneth Lehmann –
It’s the first time since setting up the machine that I can operate without any problems. Completed several projects without having to restart several times.
Anonymous –
It’s So much better then the longboard, in every way.
John Buckner –
UPS is late. Wont get it until Tuesday.
Chris Newton –
It’s been a bit of a test working with the m/c. First, after my first successful run after purchase of your longmill the longboard crashed and died. On purchase of a new longvboard the x-axis began grinding. It took me until last week to discover the backlash needed tightening.
Sean Connolly –
I have been involved in this hobby for a little over one year with no prior CNC experience. Purchased the MKII and assembled it by following along with the excellent documentation and watching the videos with no issues. Recently, upgraded to the SLB to use with the PWNCNC spindle and experienced no issues upgrading from the Longboard. There are many people in the community helping out which is very much appreciated as I learn this hobby. The projects I have done are small sign v-carves and am now doing epoxy inlays and enjoying it very much! I’m in awe of what people are making, it’s truly inspirational.
Wally Cook –
I ordered the superlongboard to address a particular issue when using the laser. (Christmas present) My Microsoft Surface laptop USB could not properly operate the laser. I had to use a different laptop. The SLB resolves that issue so now I can carry on with the Surface laptop in my shop. Some other feedback. The SLB arrived as predicted by Sienci. The install was an absolute “no brainer”. Excellent guidance for swappiing out to the SLB. Also, the reason I knew about the laptop source of my laser issue was because of the personal online trouble shooting provided by Sienci. Thanks. Wally Cook P.Eng. CRSP
Sébastien C. –
Super
GEORGE Corning (verified owner) –
Great Machine
Brian Mo e (verified owner) –
A great upgrade!
Mark Lesinski (verified owner) –
Set up is easy-to-use
Mike Nolting (verified owner) –
All I can say is wow, this SLB is an awesome piece of gear. Very easy to install and the benefits are substantial. I find the machine runs a lot faster than the old board. The support from Sienci has been great, always there to answer a newbies questions.
Thomas Loomis (verified owner) –
I finally installed it. What a difference! Issues I was having with the axis stop sensors went away. The machine is very stable, no more disconnects using usb. Very smooth and fast. Couldn’t be happier.