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The Sprinkler Nerd Show

The Sprinkler Nerd Show

By: Andy Humphrey
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About this listen

 If you are a Landscape Entrepreneur this show is for you. Andy, a former contestant on the ABC hit television series Shark Tank, irrigation technology expert, and multimillion-dollar eCommerce entrepreneur brings his curiosity & creativity to tease out the secrets of successful landscape influencers and business owners. Discover how to get a leg up on the competition, be the smartest person at the design table, and advance your career in the irrigation and landscape industry at any level. All stones will be unturned as Andy digs into the nerdy details of business, technology, and personal growth here on the Sprinkler Nerd show. To join the community of Sprinkler Nerds transforming the Green Industry visit www.SprinklerNerd.com.Copyright © 2022, Sprinkler Nerd
Episodes
  • #184 - FL ND NYC Amsterdam

    #184 - FL ND NYC Amsterdam
    May 22 2025

    Reference Link: https://player.captivate.fm/episode/ec981d8c-cd1d-4c13-961a-76cf9cf32ecb
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    22 mins
  • #183 - For Immediate Release, Patent US3808385

    #183 - For Immediate Release, Patent US3808385
    Apr 11 2025

    For immediate release—breaking news, kind of.


    In this solo episode of The Sprinkler Nerd Show, Andy dives into what seems like a revolutionary product: a mechanical rain sensor that requires no batteries, no Wi-Fi, no firmware updates—just pure, functional design. It shuts off irrigation during rainfall and turns it back on when conditions dry out, all thanks to hygroscopic discs that expand and contract to trigger a simple switch.

    This device sounds like the newest drop in water-saving technology—until Andy reveals the twist: it's not new at all. In fact, it's based on US Patent 3,808,385, filed in 1972 and granted in 1974. That's over 50 years ago. And the core concept of the mechanical rain sensor hasn’t changed since.

    Andy breaks down how the device works, why it’s still effective today, and what it says about the pace of innovation in the irrigation industry. He challenges contractors and tech developers alike to ask the big question: why are we still using 1970s technology in 2025?

    Could we create a smarter, data-driven rain sensor that actually logs rainfall events, provides historical context, and informs better irrigation decisions? If so—why hasn’t anyone built it yet?

    Key Highlights:

    • Breakdown of how the moisture-responsive switch actuator works

    • Benefits for contractors: simplicity, reliability, zero maintenance

    • Installation and adjustment tips

    • Why the current state of rain sensors is a wake-up call

    • A challenge to the industry: let’s rethink how we track rain and respond to it

    Andy closes the episode with a call to action for all Sprinkler Nerds: always ask why. Why things work the way they do, why they've stayed the same—and how we can make them better.
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    12 mins
  • #182 - Approachable 2-Wire with Rain Bird's Steve Barendt

    #182 - Approachable 2-Wire with Rain Bird's Steve Barendt
    Apr 4 2025
    YouTube Short: https://youtube.com/shorts/flpTuNN7vqY Summary In this episode of the Sprinkler Nerd Show, host Andy Humphrey sits down with Steve Barendt from Rain Bird to explore the company’s new ESP 2-Wire Controller—a product that’s making 2-wire irrigation systems significantly more approachable for contractors who may have previously avoided them due to complexity. The Origin of the Conversation Andy first encountered Steve at the IA Show, where Steve delivered an impromptu 2-minute elevator pitch on the new controller. That pitch sparked Andy’s interest in Rain Bird’s new approach to two-wire systems, leading to this deeper dive discussion. Steve’s Background Steve brings a decade of experience at Rain Bird, including seven years on the sales team working directly with contractors in the Austin, Texas area. His background in the field informs his work as a product manager, enabling him to better understand real-world customer needs and challenges. Why "Approachable" Matters Historically, two-wire systems have been considered complex, especially around wiring specifications, connector types, and troubleshooting. Rain Bird’s ESP Two-Wire Controller aims to lower the barrier to entry, making it easier for contractors—even those new to two-wire installations—to adopt the technology. The term "approachable two-wire" is intentional. Steve explains that Rain Bird designed this controller to work with standard irrigation wire and connectors, rather than requiring specialized components. As long as the wire is direct burial irrigation wire (down to 18 gauge) and connectors are rated for 600 volts, users can leverage what’s already on their trucks—reducing the learning curve and installation costs. A Big Shift: De-Energized Two-Wire Path A key innovation is that the two-wire path is not constantly energized, as it is in traditional two-wire systems. Instead, it’s only powered when actively running a station or performing diagnostics. This reduces heat at the connectors and decreases corrosion risks, allowing the use of standard connectors and simplifying troubleshooting. Positioning: Who’s It For? The ESP Two-Wire Controller isn’t designed to replace all two-wire systems. Instead, it’s aimed at light commercial and large residential projects with about 12 to 30 stations—an area where contractors often debate between traditional wiring and larger two-wire systems. Key highlights: 50-station capacity (though ideal use is around 12–30 stations) Cost break-even point starts around 12 stations, lower than the 30+ typical for traditional two-wire setups Two solenoids can operate simultaneously Compatible with a standard flow sensor (hardwired) By offering a lower break-even point and simpler installation, this controller fills a gap between traditional modular controllers like the ESP ME3 and higher-end commercial platforms like LX IVM. Troubleshooting Tools and Diagnostics Rain Bird has invested heavily in diagnostics features that make this controller easier to troubleshoot: LED Feedback on Decoders: Each decoder includes red, green, and blue LEDs that indicate operational status, short circuits, and open circuits. Short Finding Mode: Allows energizing the path for diagnostics with a clamp meter. Power-Measure Mode: Helps track power issues in the field. These features empower contractors to isolate and resolve issues faster without needing advanced tools or specialized knowledge. Auto-Addressing Decoders Perhaps the most contractor-friendly feature is the auto-address functionality. Rain Bird decoders come in numbered order, and if installed sequentially, the controller will auto-scan and assign decoder addresses to stations with no manual input. This drastically reduces setup time and minimizes human error. While other systems may require manual address entry or use specialized software, Rain Bird’s solution is faster and simpler—especially when paired with the mobile app. No Field Grounding Required Another simplification: unlike other two-wire systems, no field grounding is required for this controller. Though contractors can choose to ground the system if they wish, it's not necessary for functionality or warranty compliance. Connectivity and Software Integration The controller is WiFi-enabled via Rain Bird’s LNK2 module. It currently connects to Rain Bird’s legacy mobile app, but a transition to Rain Bird’s 2.0 app and IQ 4 web platform is planned for 2025, which will bring expanded access and remote management options. Simplified SKUs and Installation Rain Bird is offering this platform with just two SKUs: the controller and a single-station decoder. That’s a major advantage for distributors and contractors, who won’t need to manage complex inventories of sensor decoders, grounding kits, or multi-station decoders. Behind the Scenes: Product Development Steve shared insights into the 2–3 year development timeline, which included field ...
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    53 mins

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