Microlevel is ready

Keith V

Keith V

Well-known member
Mar 26, 2008
3,600
396
83
Ok Microlevel is ready to go.
For those that don't know, it's a microprocessor based true heigh measuring ride height controller for the GMC motorhome.
It was developed for the GMC on the GMC and only for the GMC. It's not a hack of a generic solution.

It operates a lot like the stock systems and adds 3 new features.
1. Campground leveling. Push a button and it levels.
2. Push button height calibration. Since it uses a microprocessor and true height sensors, setting the ride height is just a few button presses, no mechanical adjustments.
3. RF remote, raise or lower either side from inside or outside the coach, great for dumping, changing tires or any other maintenance.

Cost is $895 USD

For that you get:
* Microlevel Controller
* 2 Valve blocks ( 4 valves )
* 2 ride height sensors with custom brackets
* Sensor wiring harness
* Key Fob 4 channel RF remote
* Dimmer
* Email tech support
* 2 year full replacement controller warranty ( unless you obviously abuse it! )

Here's the sales brochure
http://www.gmcmotorhomemarketplace.com/vasilakes/microlevel_intro.pdf

Users manual
http://www.gmcmotorhomemarketplace.com/vasilakes/microlevel_install-operation.pdf

Wiring diagram
http://www.gmcmotorhomemarketplace.com/vasilakes/microlevel_wiring.jpg
 
Keith,
This is quite the impressive unit. I’m new to the forum and I’m sure you’ve been working on this for sometime congrats on the finished product. Couple quick questions.
What valve block are you using?
Aside from the control panel, what separates this leveling system from the big boys like Accuair elevel system? With there tech support and availability of products.
That being said I really like what you’ve done and can’t wait to see it in someone’s rig.
Thanks Jim

Sent from my iPhone

>
> Ok Microlevel is ready to go.
> For those that don't know, it's a microprocessor based true heigh measuring ride height controller for the GMC motorhome.
> It was developed for the GMC on the GMC and only for the GMC. It's not a hack of a generic solution.
>
> It operates a lot like the stock systems and adds 3 new features.
> 1. Campground leveling. Push a button and it levels.
> 2. Push button height calibration. Since it uses a microprocessor and true height sensors, setting the ride height is just a few button presses, no mechanical adjustments.
> 3. RF remote, raise or lower either side from inside or outside the coach, great for dumping, changing tires or any other maintenance.
>
> Cost is $895 USD
>
> For that you get:
> * Microlevel Controller
> * 2 Valve blocks ( 4 valves )
> * 2 ride height sensors with custom brackets
> * Sensor wiring harness
> * Key Fob 4 channel RF remote
> * Dimmer
> * Email tech support
> * 2 year full replacement controller warranty ( unless you obviously abuse it! )
>
>
> Here's the sales brochure
> http://www.gmcmotorhomemarketplace.com/vasilakes/microlevel_intro.pdf
>
> Users manual
> http://www.gmcmotorhomemarketplace.com/vasilakes/microlevel_install-operation.pdf
>
> Wiring diagram
> http://www.gmcmotorhomemarketplace.com/vasilakes/microlevel_wiring.jpg
> _______________________________________________
> GMCnet mailing list
> Unsubscribe or Change List Options:
> http://list.gmcnet.org/mailman/listinfo/gmclist_list.gmcnet.org
 
Thanks Jim
I started this project 4 years ago, I've been through 5 hardware design revisions and countless software improvements. I've been running this in one for or another all that time.

For the valve block I'm just using a set of 4 1/4 off the shelf valves
Here's a picture of my valve stack mounted on my JC4 plate.

Tech support is me by email MAYBE phone if you're nice 😊
Keith
________________________________
From: Gmclist on behalf of Jim DeMellia
Sent: Monday, February 19, 2018 11:58 AM
To: gmclist
Subject: Re: [GMCnet] Microlevel is ready

Keith,
This is quite the impressive unit. I’m new to the forum and I’m sure you’ve been working on this for sometime congrats on the finished product. Couple quick questions.
What valve block are you using?
Aside from the control panel, what separates this leveling system from the big boys like Accuair elevel system? With there tech support and availability of products.
That being said I really like what you’ve done and can’t wait to see it in someone’s rig.
Thanks Jim

Sent from my iPhone

>
> Ok Microlevel is ready to go.
> For those that don't know, it's a microprocessor based true heigh measuring ride height controller for the GMC motorhome.
> It was developed for the GMC on the GMC and only for the GMC. It's not a hack of a generic solution.
>
> It operates a lot like the stock systems and adds 3 new features.
> 1. Campground leveling. Push a button and it levels.
> 2. Push button height calibration. Since it uses a microprocessor and true height sensors, setting the ride height is just a few button presses, no mechanical adjustments.
> 3. RF remote, raise or lower either side from inside or outside the coach, great for dumping, changing tires or any other maintenance.
>
> Cost is $895 USD
>
> For that you get:
> * Microlevel Controller
> * 2 Valve blocks ( 4 valves )
> * 2 ride height sensors with custom brackets
> * Sensor wiring harness
> * Key Fob 4 channel RF remote
> * Dimmer
> * Email tech support
> * 2 year full replacement controller warranty ( unless you obviously abuse it! )
>
>
> Here's the sales brochure
> http://www.gmcmotorhomemarketplace.com/vasilakes/microlevel_intro.pdf
>
> Users manual
> http://www.gmcmotorhomemarketplace.com/vasilakes/microlevel_install-operation.pdf
>
> Wiring diagram
> http://www.gmcmotorhomemarketplace.com/vasilakes/microlevel_wiring.jpg
> _______________________________________________
> GMCnet mailing list
> Unsubscribe or Change List Options:
> http://list.gmcnet.org/mailman/listinfo/gmclist_list.gmcnet.org

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Will this work with the aftermarket 1 ton front end and aftermarket bag
systems? It sounds awesome so far!

Sammy Williams

> Thanks Jim
> I started this project 4 years ago, I've been through 5 hardware design
> revisions and countless software improvements. I've been running this in
> one for or another all that time.
>
> For the valve block I'm just using a set of 4 1/4 off the shelf valves
> Here's a picture of my valve stack mounted on my JC4 plate.
>
> Tech support is me by email MAYBE phone if you're nice 😊
> Keith
> ________________________________
> From: Gmclist on behalf of Jim DeMellia
>
> Sent: Monday, February 19, 2018 11:58 AM
> To: gmclist
> Subject: Re: [GMCnet] Microlevel is ready
>
> Keith,
> This is quite the impressive unit. I’m new to the forum and I’m sure
> you’ve been working on this for sometime congrats on the finished product.
> Couple quick questions.
> What valve block are you using?
> Aside from the control panel, what separates this leveling system from the
> big boys like Accuair elevel system? With there tech support and
> availability of products.
> That being said I really like what you’ve done and can’t wait to see it in
> someone’s rig.
> Thanks Jim
>
> Sent from my iPhone
>

> >
> > Ok Microlevel is ready to go.
> > For those that don't know, it's a microprocessor based true heigh
> measuring ride height controller for the GMC motorhome.
> > It was developed for the GMC on the GMC and only for the GMC. It's not a
> hack of a generic solution.
> >
> > It operates a lot like the stock systems and adds 3 new features.
> > 1. Campground leveling. Push a button and it levels.
> > 2. Push button height calibration. Since it uses a microprocessor and
> true height sensors, setting the ride height is just a few button presses,
> no mechanical adjustments.
> > 3. RF remote, raise or lower either side from inside or outside the
> coach, great for dumping, changing tires or any other maintenance.
> >
> > Cost is $895 USD
> >
> > For that you get:
> > * Microlevel Controller
> > * 2 Valve blocks ( 4 valves )
> > * 2 ride height sensors with custom brackets
> > * Sensor wiring harness
> > * Key Fob 4 channel RF remote
> > * Dimmer
> > * Email tech support
> > * 2 year full replacement controller warranty ( unless you obviously
> abuse it! )
> >
> >
> > Here's the sales brochure
> > http://www.gmcmotorhomemarketplace.com/vasilakes/microlevel_intro.pdf
> >
> > Users manual
> > http://www.gmcmotorhomemarketplace.com/vasilakes/microlevel_install-
> operation.pdf
> >
> > Wiring diagram
> > http://www.gmcmotorhomemarketplace.com/vasilakes/microlevel_wiring.jpg
> > _______________________________________________
> > GMCnet mailing list
> > Unsubscribe or Change List Options:
> > http://list.gmcnet.org/mailman/listinfo/gmclist_list.gmcnet.org
>
> _______________________________________________
> GMCnet mailing list
> Unsubscribe or Change List Options:
> http://list.gmcnet.org/mailman/listinfo/gmclist_list.gmcnet.org
> _______________________________________________
> GMCnet mailing list
> Unsubscribe or Change List Options:
> http://list.gmcnet.org/mailman/listinfo/gmclist_list.gmcnet.org
>
 
Yep, they should be fine
________________________________
From: Gmclist on behalf of Sammy Williams
Sent: Monday, February 19, 2018 12:23 PM
To: gmclist
Subject: Re: [GMCnet] Microlevel is ready

Will this work with the aftermarket 1 ton front end and aftermarket bag
systems? It sounds awesome so far!

Sammy Williams

> Thanks Jim
> I started this project 4 years ago, I've been through 5 hardware design
> revisions and countless software improvements. I've been running this in
> one for or another all that time.
>
> For the valve block I'm just using a set of 4 1/4 off the shelf valves
> Here's a picture of my valve stack mounted on my JC4 plate.
>
> Tech support is me by email MAYBE phone if you're nice 😊
> Keith
> ________________________________
> From: Gmclist on behalf of Jim DeMellia
>
> Sent: Monday, February 19, 2018 11:58 AM
> To: gmclist
> Subject: Re: [GMCnet] Microlevel is ready
>
> Keith,
> This is quite the impressive unit. I’m new to the forum and I’m sure
> you’ve been working on this for sometime congrats on the finished product.
> Couple quick questions.
> What valve block are you using?
> Aside from the control panel, what separates this leveling system from the
> big boys like Accuair elevel system? With there tech support and
> availability of products.
> That being said I really like what you’ve done and can’t wait to see it in
> someone’s rig.
> Thanks Jim
>
> Sent from my iPhone
>

> >
> > Ok Microlevel is ready to go.
> > For those that don't know, it's a microprocessor based true heigh
> measuring ride height controller for the GMC motorhome.
> > It was developed for the GMC on the GMC and only for the GMC. It's not a
> hack of a generic solution.
> >
> > It operates a lot like the stock systems and adds 3 new features.
> > 1. Campground leveling. Push a button and it levels.
> > 2. Push button height calibration. Since it uses a microprocessor and
> true height sensors, setting the ride height is just a few button presses,
> no mechanical adjustments.
> > 3. RF remote, raise or lower either side from inside or outside the
> coach, great for dumping, changing tires or any other maintenance.
> >
> > Cost is $895 USD
> >
> > For that you get:
> > * Microlevel Controller
> > * 2 Valve blocks ( 4 valves )
> > * 2 ride height sensors with custom brackets
> > * Sensor wiring harness
> > * Key Fob 4 channel RF remote
> > * Dimmer
> > * Email tech support
> > * 2 year full replacement controller warranty ( unless you obviously
> abuse it! )
> >
> >
> > Here's the sales brochure
> > http://www.gmcmotorhomemarketplace.com/vasilakes/microlevel_intro.pdf
> >
> > Users manual
> > http://www.gmcmotorhomemarketplace.com/vasilakes/microlevel_install-
> operation.pdf
> >
> > Wiring diagram
> > http://www.gmcmotorhomemarketplace.com/vasilakes/microlevel_wiring.jpg
> > _______________________________________________
> > GMCnet mailing list
> > Unsubscribe or Change List Options:
> > http://list.gmcnet.org/mailman/listinfo/gmclist_list.gmcnet.org
>
> _______________________________________________
> GMCnet mailing list
> Unsubscribe or Change List Options:
> http://list.gmcnet.org/mailman/listinfo/gmclist_list.gmcnet.org
> _______________________________________________
> GMCnet mailing list
> Unsubscribe or Change List Options:
> http://list.gmcnet.org/mailman/listinfo/gmclist_list.gmcnet.org
>
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Keith,
Good job!!!
It looks like it's designed for a single air compressor? Those of us with the EL11 with two air compressors would need to modify our systems to a
single compressor?
Put me in the que... I'm ready!!
Scott.
--
Scott Nutter
1978 Royale Center Kitchen, Patterson 455, switch pitch tranny, 3.21 final drive, Quad bags, tankless water heater, everything Lenzi.
Houston, Texas
 
Scott I think the amount of compressors would be irrelevant. They both feed to one tank I’m guessing? There is still going to be a single feed line to the valves and then out to the bags.

Sent from my iPhone

>
> Keith,
> Good job!!!
> It looks like it's designed for a single air compressor? Those of us with the EL11 with two air compressors would need to modify our systems to a
> single compressor?
> Put me in the que... I'm ready!!
> Scott.
> --
> Scott Nutter
> 1978 Royale Center Kitchen, Patterson 455, switch pitch tranny, 3.21 final drive, Quad bags, tankless water heater, everything Lenzi.
> Houston, Texas
>
> _______________________________________________
> GMCnet mailing list
> Unsubscribe or Change List Options:
> http://list.gmcnet.org/mailman/listinfo/gmclist_list.gmcnet.org
 
Awesome Kieth!

Does the system know max height and minimum height?
I run my compressor tank around 170psi for quicker fills and to fill tires etc, what happens when I don't have enough travel on the airbag to reach
level at a campsite? Will it close the valves or just keep "trying" to level until the bags burst or the shock breaks?

--
Justin Brady
http://www.thegmcrv.com/
1976 Palm Beach 455
 
Jim,
According to the photo/ schematic there is no air tank, if I read it correctly. Just a single compressor.
We will have to wait for Keith to chime in. But a air tank with a couple hundred psi in storage would be a quick recovery!,
Scott.
--
Scott Nutter
1978 Royale Center Kitchen, Patterson 455, switch pitch tranny, 3.21 final drive, Quad bags, tankless water heater, everything Lenzi.
Houston, Texas
 
Jim D,
The 78 does not have a tank as they felt the two will raise the bags almost
as fast.

> Awesome Kieth!
>
> Does the system know max height and minimum height?
> I run my compressor tank around 170psi for quicker fills and to fill tires
> etc, what happens when I don't have enough travel on the airbag to reach
> level at a campsite? Will it close the valves or just keep "trying" to
> level until the bags burst or the shock breaks?
>
> --
> Justin Brady
> http://www.thegmcrv.com/
> 1976 Palm Beach 455
>
> _______________________________________________
> GMCnet mailing list
> Unsubscribe or Change List Options:
> http://list.gmcnet.org/mailman/listinfo/gmclist_list.gmcnet.org
>

--
Jim Kanomata
Applied/GMC, Newark,CA
jimk
http://www.appliedgmc.com
1-800-752-7502
 
OH Chit....

Hey Folks, Download and read what Kieth has posted. This thing is no silly toy. You will lose no functionality of the original system. There are a
lot of less that great parts that can be removed.

Keith - -
When you were talking at Elkhart, I didn't realize that you had a WHOLE system. My impression was that it was just a control board for the existing
solenoid valves. So, I was thinking it would be hard to adapt to my '73 because I don't have the EL1 valves. Well, if I had the EL1 valves, they
would be useless. There is a local person that when stripping the coach, took out the valve collection and gave it away. I have been avoiding said,
but now I will pass this along.

Matt
--
Matt & Mary Colie - '73 Glacier 23 - Members GMCMI, GMCGL, GMCES
Electronically Controlled Quiet Engine Cooling Fan
OE Rear Drum Brakes with Applied Control Arms
SE Michigan - Twixt A2 and Detroit
 
Very cool!

I especially like the "Camp Mode"
--
Carl Stouffer
'75 ex Palm Beach
Tucson, AZ.
Chuck Aulgur Reaction Arm Disc Brakes, Quadrabags, 3.70 LSD final drive, Lenzi knuckles/hubs, Dodge Truck 16" X 8" front wheels, Rear American Eagles,
Solar battery charging. GMCSJ and GMCMI member
 
Thanks Jim K. I didn’t realize they didn’t have a tank. That seems like it would put a lot of strain on the pumps. I’ve built air ride systems in other vehicles and two of my own always compressor to tank to valves. Keith’s system sounds great. Bringing our rigs into the 21st century is a wonderful thing.

Sent from my iPhone

>
> Very cool!
>
> I especially like the "Camp Mode"
> --
> Carl Stouffer
> '75 ex Palm Beach
> Tucson, AZ.
> Chuck Aulgur Reaction Arm Disc Brakes, Quadrabags, 3.70 LSD final drive, Lenzi knuckles/hubs, Dodge Truck 16" X 8" front wheels, Rear American Eagles,
> Solar battery charging. GMCSJ and GMCMI member
>
> _______________________________________________
> GMCnet mailing list
> Unsubscribe or Change List Options:
> http://list.gmcnet.org/mailman/listinfo/gmclist_list.gmcnet.org
 
Rob, no worries Mate. I'm just biding my time waiting for feild reports

Wow that blew up! 😊
The original design is for 1 compressor and 4 valves, but looking at the schematics I think it should be possible to use the Electrolevel I and II systems as is. I do need to, or find someone to test it of course. That hold solenoid is the biggest question. MicroLevel has 5 outputs, left up, left down, right up right down and compressor enable. worst case is I'd have to reconfigure them for the EL systems, but I'm betting we can be creative.

The air tank is optional, the system doesn't care if you have one or not as long as you get it compressed air somehow.

Justin, the system works just like PL, EL I and EL II. In manual mode none of these systems limit the height and no one has blown a shock leaving it in Raise. It's a non issue with the stock systems. But since you are running above the recommended pressure, so what happens now in manual mode??

________________________________
From: Gmclist on behalf of Jim DeMellia
Sent: Tuesday, February 20, 2018 12:10 AM
To: gmclist
Subject: Re: [GMCnet] Microlevel is ready

Thanks Jim K. I didn’t realize they didn’t have a tank. That seems like it would put a lot of strain on the pumps. I’ve built air ride systems in other vehicles and two of my own always compressor to tank to valves. Keith’s system sounds great. Bringing our rigs into the 21st century is a wonderful thing.

Sent from my iPhone

>
> Very cool!
>
> I especially like the "Camp Mode"
> --
> Carl Stouffer
> '75 ex Palm Beach
> Tucson, AZ.
> Chuck Aulgur Reaction Arm Disc Brakes, Quadrabags, 3.70 LSD final drive, Lenzi knuckles/hubs, Dodge Truck 16" X 8" front wheels, Rear American Eagles,
> Solar battery charging. GMCSJ and GMCMI member
>
> _______________________________________________
> GMCnet mailing list
> Unsubscribe or Change List Options:
> http://list.gmcnet.org/mailman/listinfo/gmclist_list.gmcnet.org

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you have no idea. At Elkhart my buddy Paul came along, we pulled into the camp spot, I tapped the camp button and shut the engine off.

Paul said "so show me how camp works?"
I said " I Just did"
Paul said :O

________________________________
From: Gmclist on behalf of Carl Stouffer
Sent: Monday, February 19, 2018 8:40 PM
To: gmclist
Subject: Re: [GMCnet] Microlevel is ready

Very cool!

I especially like the "Camp Mode"
--
Carl Stouffer
'75 ex Palm Beach
Tucson, AZ.
Chuck Aulgur Reaction Arm Disc Brakes, Quadrabags, 3.70 LSD final drive, Lenzi knuckles/hubs, Dodge Truck 16" X 8" front wheels, Rear American Eagles,
Solar battery charging. GMCSJ and GMCMI member

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Kieth, will you supply the source code, or at least escrow it? I plan to outlive everybody here, and thus might need it after you assume room
temperature :)

--johnny
--
76 26' Eleganza(?) with beaucoup mods and add - ons.
Braselton, Ga.
"I forgive them all, save those who hurt the dogs. They must answer to me in hell" - ol Andy, paraphrased
 
Damn, Johnny. Are you coming to Tucson in April? I'd like to buy you an
adult beverage, or two.
Jim Hupy
Salem, Or
78 GMC ROYALE 403

On Feb 20, 2018 7:51 AM, "Johnny Bridges via Gmclist" <

> Kieth, will you supply the source code, or at least escrow it? I plan to
> outlive everybody here, and thus might need it after you assume room
> temperature :)
>
> --johnny
> --
> 76 26' Eleganza(?) with beaucoup mods and add - ons.
> Braselton, Ga.
> "I forgive them all, save those who hurt the dogs. They must answer to me
> in hell" - ol Andy, paraphrased
>
>
> _______________________________________________
> GMCnet mailing list
> Unsubscribe or Change List Options:
> http://list.gmcnet.org/mailman/listinfo/gmclist_list.gmcnet.org
>
 
The code is all up on a public VCS if you're so inclined.

________________________________
From: Gmclist on behalf of Johnny Bridges via Gmclist
Sent: Tuesday, February 20, 2018 9:50 AM
To: gmclist
Cc: Johnny Bridges
Subject: Re: [GMCnet] Microlevel is ready

Kieth, will you supply the source code, or at least escrow it? I plan to outlive everybody here, and thus might need it after you assume room
temperature :)

--johnny
--
76 26' Eleganza(?) with beaucoup mods and add - ons.
Braselton, Ga.
"I forgive them all, save those who hurt the dogs. They must answer to me in hell" - ol Andy, paraphrased

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Keith,
Now since It's manual I just feel when it tops out and let go of the buttons :d Also have a pressure gauge so I know what's going on in the bags.

I'm sure it would be a non-issue, but I can just see me hitting the level button and then getting distracted and boom! I suppose that could also
happen with my manual control, but since it's manual I have to sit there and not multitask while leveling.

I assume since the processor is reading the true height you could program in a limit? Maybe make another calibration setup where you raise to max
height and then hit calibrate so that it knows when it's at the top and will pop out of Camp mode and default to Hold.

My thought here is that a lot of people are running viair compressors, and a 480C will run 200+ PSI if left unchecked which is a recipe for disaster
with a 40 year old airbag. (for those still stock).
Pressure switch would prevent this obviously, but those fail. I just feel like (for me at least) the added convenience of "push camp mode and you're
done" is going to lead to me pushing the button then getting up to go check on something else and get distracted :d

Admittedly it's probably not an issue at all, I just tend to think along the lines of if you can, why not? :d

--
Justin Brady
http://www.thegmcrv.com/
1976 Palm Beach 455
 
Justin,
I have height limit code and tested it, the problem is the user complexity it adds and for little benefit.
Running pressure so high you can break things is a bad idea and definitely not recommended with any system.

One feature that is on my todo list is to stop adjusting if no movement is detected, but thats a big mess there, the use cases have a lot of contradictions.

FWIW campground leveling is pretty fast, so it's not hard to watch it.
Also the LEDs flash annoyingly any time the system sees the height stop moving when it should be, so thats better than the stock system too.
________________________________
From: Gmclist on behalf of Justin Brady
Sent: Tuesday, February 20, 2018 11:02 AM
To: gmclist
Subject: Re: [GMCnet] Microlevel is ready

Keith,
Now since It's manual I just feel when it tops out and let go of the buttons :d Also have a pressure gauge so I know what's going on in the bags.

I'm sure it would be a non-issue, but I can just see me hitting the level button and then getting distracted and boom! I suppose that could also
happen with my manual control, but since it's manual I have to sit there and not multitask while leveling.

I assume since the processor is reading the true height you could program in a limit? Maybe make another calibration setup where you raise to max
height and then hit calibrate so that it knows when it's at the top and will pop out of Camp mode and default to Hold.

My thought here is that a lot of people are running viair compressors, and a 480C will run 200+ PSI if left unchecked which is a recipe for disaster
with a 40 year old airbag. (for those still stock).
Pressure switch would prevent this obviously, but those fail. I just feel like (for me at least) the added convenience of "push camp mode and you're
done" is going to lead to me pushing the button then getting up to go check on something else and get distracted :d

Admittedly it's probably not an issue at all, I just tend to think along the lines of if you can, why not? :d

--
Justin Brady
http://www.thegmcrv.com/
1976 Palm Beach 455

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