Iowa Scaled Engineering designs, manufactures, and sells many unique and cost effective products intended for model railroad and electronic hobbyists. Explore below for application notes to inspire your designs or browse the store to see all the products we have to offer.

Is the ARD-LTC2499 as Accurate as an Agilent 34401A?

The ARD-LTC2499 was designed from the beginning with the intent to get as close to perfect accuracy as one could with an out-of-the-box Arduino Shield, while still keeping the cost affordable for mere mortals like us.  We chose one of the best 16-channel ADCs on the market and matched it up with a high-performance voltage reference.  To see what the accuracy really was, I borrowed Nathan’s 34401A meter and put them both to the test.

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Pausing Time: Using Fast Clock Hold Mode

Have you ever been in the middle of an operating session and disaster strikes?  A train derails, shorting out the DCC system, taking with it a power district, or even the entire layout. The problem is eventually fixed, but in the 5 minutes it took to restore things to the way they were, your fast clock kept ticking away. With a 3:1 ratio, all trains are now  suddenly 15 minutes late.

Wouldn’t it be nice to simply press a button on the fast clock to pause time, then with a single press, restart the time right where it left off?

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Using Berrett Hill Touch Toggles with MRServo

One of the most interesting electronic parts to come on the market lately is Berrett Hill’s Touch Toggles.  They’re little electronic switches that operate by the proximity of your finger.  There’s no mechanical movement, so you can put them behind acrylic control panel faceplates and other such and still operate them just by touching the surface.  Unlike a mechanical switch, they never wear out, and they come with built-in indicator lights. Continue reading

Solar Car Teams

As alumni of the Iowa State University Solar Car Team, Team PrISUm, we recognized that many of Iowa Scaled Engineering’s products could be used by teams competing in solar racing competitions.  In fact, MRBus had its origins in the Sunrayce ’99 car, PrISUm Phoenix.

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Automatic Interchange

Iowa Scaled Engineering products were recently mentioned  in one of the Model Railroader Video Plus episodes, featuring Tony Koester’s Nickel Plate Road.

In this video (subscribers only) you’ll see our CKT-IRSENSE and ACC-RELAY1 products used in an automatic interchange.  Each time a cut of cars is picked up, a new cut of cars is automatically pushed forward.  For those wanting more details, Tony has written an article about automated interchanges that we understand should appear in an upcoming issue of Model Railroader.

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