24-Channel Solid State Relay Controller + 8 GPIO with I2C Interface

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  • NCD-PR15-5
  • PR15-5
This I2C 24-channel Solid-State relay controller offers a cross-platform solution with unmatched... more
Product information "24-Channel Solid State Relay Controller + 8 GPIO with I2C Interface"

This I2C 24-channel Solid-State relay controller offers a cross-platform solution with unmatched compatibility and expansion capabilities.  Compatible with every IoT technology that supports I2C communications, this is the most versatile relay controller we have ever manufactured.  All NCD I2C relay controllers have a I2C output, allowing you to chain together more relay controllers, a vast array of sensors, current monitors, PWM drivers, and much more.  The expansion abilities of this relay board are unmatched by any other manufacturer in the world.  This controller is based on dual MCP23017 controllers, a common I2C interface chip for GPIO applications.  In this design, the GPIO port is used to control 24 solid state relays.  Eight programmable Digital Input/Output port pins are also available via screw terminals for use in Contact Closure detection applications or monitor and control external TTL circuits.  The I2C bus support up to 8 similar devices (based on the MCP23008 or MCP23017).  This controller counts as two devices on the I2C bus.  Two on-board address jumpers set the I2C start address of both MCP23017 interface chips.  On-board status LEDs display the on/off status of each relay.  This controller may be powered using our optional power supply or with 12VDC and direct screw terminal connection of bare power wires.  Each solid state relay is accessible to the user via two large screw terminals, capable of accepting 12 AWG wire.  This controller includes many solid-state relay options, customized when added to your shopping cart.

What is the NCD I2C Interface?

NCD is the creator of plug and play modular hardware using the NCD I2C Interface connector standard.  NCD I2C devices allow you to chain together several devices on the I2C bus, and communicate to each device individually at high speed (subject to the limitations of I2C).  The NCD I2C Interface uses a standard 4-Pin I2C Input and I2C Output connector.  NCD I2C devices communicate 5V I2C data and provides 5V DC power through this connector.  NCD I2C devices use standard I2C communications for all data transport, which is supported by nearly every microcontroller in production today.  The NCD I2C Interface is strictly a 5V standard, which is ideal for transport across longer cables.  NCD I2C devices always include a 6″ (152mm) 4-conductor I2C cable.  NCD I2C Mini Modules always include a 3″ (76mm) 4-conductor I2C cable.  Cables and connectors are available separately for designers who would like to include their own NCD I2C Interface into their designs.

Plug and Play Connectivity

NCD I2C devices will plug in to any available NCD I2C Output.  This includes just about everything we make in the NCD IoT Category, including all NCD IoT devices.  We also manufacture a wide range of I2C adapters that make it easy to plug NCD I2C Devices directly into most computing platforms.  The NCD I2C Interface adapters are available for Arduino, Banana Pi, BeagleBone, Bluz, C.H.I.P., ESP8266, Onion Omega, Particle Photon and Electron, PyCom, Raspberry Pi, 2, 3, and Zero, and Windows.  We are always working to add new platform support for NCD I2C devices.  NCD I2C Interface devices are compatible with just about everything in the microcontroller industry.

Unlimited I2C Expansion

Based on our plug-and-play I2C interface standard, all NCD I2C devices are equipped with a I2C output port, making it easy to expand to a wide variety of sensors, current monitors, relay controllers, PWM controllers, and much more!  We are always designing new expansions for our modular plug-and-play I2C framework.  We are dedicated to building a product line of interconnected devices to simplify all forms of automation.  Re-use or upgrade your hardware in seconds by selecting the modules that best fit your needs, and chaining them together using the included I2C expansion cables!

Powering NCD I2C Interface Devices

Some NCD I2C devices require a external power supply, others may be powered through the 4-Pin I2C bus connector at 5VDC, and other devices are jumper selectable between external and I2C bus power.  All I2C mini modules are powered through the 5V I2C bus connector, greatly simplifying connectivity.

Solid State Relays

Solid state relays are ideal for agricultural switching applications, or remotely located switching.  SSRs are frequently chosen to control pumps, valves, solenoids, lights, and other high-reliability applications.  NCD solid-state relay controllers do not include solid-state relays, but you will have the option to choose the type of solid state relays you require when customizing your product. This controller is designed specifically to fit select Crydom solid-state relays, but may be compatible other solid-state relays made by other companies.

Features

  • 24-Channel Relay Controller with I2C Interface
  • 8-Channel Programmable TTL/CMOS GPIO
  • Control Solid-State Relays from a Cellular Connection
  • Compatible with Arduino, Raspberry Pi, Onion, PyCom
  • MCP23017 I2C Controlled Solid-State SPST Relays
  • Hosts up to 24 Solid-State Relays (Optional Accessory)
  • I2C Output Port for Adding Sensors, Controllers, or More Relays
  • Wireless Remote Operation with Key Fob Expansion Option
  • Example Libraries Available on GitHub

 

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