This IoT 2-channel Solid-State relay controller was designed to host many different IoT communication modules, including Particle Photon, Electron, Bluz, Arduino, and many more. This controller is based on the MCP23008, a common I2C interface chip for GPIO applications. In this design, the GPIO port is used to control 2 solid state relays. Six 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. Three on-board address jumpers allow up to 8 similar devices (based on the MCP23008 or MCP23017) to be chained to the same I2C bus for individual control. 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.
Leverage the power of IFTTT.com and Particle services to do almost anything. Send a tweet if someone rings your doorbell, send a notification to your phone if someone opens a door, turn on almost anything right from your phone with simple setup, the possibilities are endless. NCD provides this controller with a optional pre-programmed Particle Photon module for easy connection to IFTTT. No programming required! Just use the simple IFTTT interface to setup your different configurations.
Powered By Particle
Give your Particle Photon the power to interact with the real world in ways never before possible. Use the optional Particle Photon module pre-flashed with our custom IFTTT firmware, NCD compatible shields allow for control of many types of relays, monitoring digital and analog sensors, and much much more. Chain I²C accessory boards to your system to add whatever you may need for your next control and automation project.
What is the NCD IoT Interface?
The NCD IoT Interface provides users with a means of changing or upgrading the IoT communications technology as new technologies emerge. The NCD IoT Interface is directly compatible with Particle Photon for WiFi communications, Electron for Cellular Communications, Bluz for Bluetooth. Optionally, adapters may be installed to provide a direct interface to Arduino Nano, Micro, USB, PyCom WyPy, Onion Omega, Raspberry Pi, and much more. The NCD IoT interface allows you to re-use your hardware so it never becomes obsolete! Based on I2C communications, the NCD IoT Interface uses only 2 GPIO lines of your microcontroller, freeing the rest of your CPU for other tasks.
Unlimited I2C Expansion
Based on our plug-and-play nodeLynk I2C interface standard, all NCD IoT devices are equipped with a nodeLynk I2C expansion 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 nodeLynk expansions for our plug-and-play nodeLynk 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 nodeLynk I2C expansion cables!
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.
Solid-State relays are quiet with a long operational life, and should be used in critical applications where reliability is of the most importance. Solid-State relays must be carefully chosen for your particular application. This controller hosts SPST Solid-State relays only, providing 2 connections to each relay: Common and Normally Open. When the relay switches on, the Common connection is connected to the Normally Open. External loads may be wired to be off all the time and turn on when the relay turns on. Relays are controlled using the MCP230xx Series Programmable GPIO Port Expanders from Microchip Technology. Relays are controlled by a MCP23008 using GPIO0:1, GPIO 2:7 are available for user interface via screw terminals. Controlling on-board relays is easy: Set GPIO0:1 as Digital Outputs. Next, set the on/off status of GPIO0:1 to activate the corresponding relays. LEDs indicate the status of on-board relays. All of these operations are handled for you when using the drivers supplied in our GitHub repository (ControlEverythingCom). Induction suppression capacitors are strongly advised for inductive switching applications (anything that generates a magnetic field). Induction suppression capacitors will prolong the life of the relays and help prevent malfunctions when switching high voltages.
This controller applies a 12VDC voltage into the gate of a Solid-State relay through a 512 Ohm resistor. This controller is safe for relays rated with a maximum 10VDC gate voltage. This controller is generally used with relays that accept a voltage range of 3-12VDC gate voltage. Solid-State Relays are subject to MINIMUM load requirements. Extremely low signals may NOT be switched by Solid-State Relays if they do not meet the minimum load requirements.
Solid-State Relays are available for AC or DC switching applications, which are NOT interchangeable. AC relays may not be used to switch DC loads, similarly, DC relays may not be used to switch AC loads. DC RELAYS ARE POLARITY SENSITIVE, AND MAY BE DAMAGED IF IMPROPERLY CONNECTED. Because our Solid-State controllers may be used with relays from other manufacturers, we do NOT label the + and – connections for DC Solid-State Relays on the circuit board. Please examine the relay and the datasheet, follow the traces printed on the bottom of the circuit board to ensure correct polarity. Some Solid-State Relays may require active forced-air cooling. Failure to apply cooling may result in permanent damage of the relay.
Please examine the datasheet for the particular relay you are using BEFORE connecting.
WE DO NOT WARRANTY SOLID-STATE RELAYS UNDER ANY CIRCUMSTANCES.
IoT Interface Compatibility
NCD IoT Interface devices are designed to plug in to many popular IoT computing platforms. This allows the “brains” from other manufacturers to directly plug into our devices for easy plug-and-play operation. IoT interface devices use I²C as the underlying communications technology. The notes below will guide you into plugging 3rd party IoT technologies into our devices, we will highlight any adapters that may be required in this section. Please note that all IoT Interface Devices act as a I²C Master Device, and may be expanded by connecting to any of our Cross-Platform nodeLynk I²C Slave Devices using the nodeLynk I²C Output.
NCD IoT Interface Direct Connection
The following devices directly plug into NCD IoT Interface controllers without a adapter.
If using a Particle Photon or Particle Electron communications module, the PKFR Key Fob Receiver overlay shield may be used to add long-range wireless Key Fob remote control to the communications module.
NCD IoT Interface Adapters
Use the following adapters will adapt the IoT Interface for I2C communications with other popular computing platforms:
Convert IoT to I2C Interface Devices
- This device may be converted to an I²C slave device using the I2C to IoT Interface Adapter, ideal for use with Raspberry Pi, Beaglebone, Arduino Uno, and BridgeX5.
Banana Pi Interface
Raspberry Pi Interface
Windows 8/10 PC Interface
Key Fob Compatibility
NCD IoT Interface devices are also compatible with a 418MHz Key Fob receiver (Part Number: PKFR), allowing your Particle Electron, Photon, or Bluz to receive and process remote Key Fob commands up to 750 feet away. Up to 40 remote controls may be associated to the PKFR. Program your IoT communications module to receive wireless remote control commands using a Key Fob. Compatible with 1, 2, 3, 4, 5, and 8-Button MS Series Key Fobs from Linx Technologies.
Choosing a Solid State Relay
Please examine the datasheet of each solid state relay carefully, as SSRs do not function exactly like mechanical switches. SSRs frequently have minimum load requirements, and some require external snubber circuitry for certain applications. SSRs do not typically work with volt meters in the same way as mechanical switches. SSRs must also be chosen for AC or DC applications, as they are not universally interchangeable. Some SSRs require forced air cooling, and may be damaged if not properly ventilated. Please consult the experts at Crydom.com if you are uncertain about your choice of SSR.
We Customize Just for You!!
NCD offers many custom IoT electronic design services to help tailor our product to your exact needs. Whether you are looking for custom firmware, circuit board modifications, metal enclosures, or industrial color printing, we can help you with a wide variety of design services.
Custom IoT Electronic Design Services Process
Most of our users purchase off-the-shelf hardware for initial testing. Once everything is working, they contact us to build a custom solution which may include specialized changes to the board, firmware, connectors, etc. Custom boards have many advantages such as reduced wiring, easy installation, small size, less power consumption, and in some cases, an overall reduction in product cost. Custom IoT Electronic Design Services will have your company name and logo on the board as well as the enclosure.
Customized IoT Electronics
NCD engineers can help build a customized solution for your particular application based on the designs you see on our website. We can combine devices onto a single board, change the shape, or even some of the components to meet your exact needs. We also provide turn-key metal enclosures with powder coating and full-color printing on the top side starting at just $500 for setup! We have more than 20 years of experience in electronics design and manufacturing. All of our products are designed and manufactured in the USA, so we are here to support the products we make. We only ask that our customers prototype their needs using our existing products before we customize.
- Custom designs should be based on our existing product because we can’t build rockets or electric cars over here!
- We do not provide customization services if it involves the introduction of a new or untested technology.
- Custom engineering fees depend on your requirements, so please contact us for a quote!
- We maintain ownership of all designs, including our customized designs as they are based on our existing Design.
- We will only ship the customized product to you or your authorized agents.
- We have an NDA available if needed.
- The turn-around time is about 2-3 weeks.
- We specialize in low-volume designs, no quantity is too small!
- We have the ability to scale to large volumes as needed.
Getting Started with Product Customization
All you have to do is contact us and we will walk you through the process from beginning to end, based on your individual needs. Some people are surprised at how fast we finish CAD design (usually a few hours), but keep in mind, we still have to build your design, which takes considerably more time. When we customize product, here are the general services we provide:
- We design the circuit board.
- We communicate with our customers throughout the customization and manufacturing process.
- We manufacture surface mount stencils and circuit boards.
- We program our pick and place machines to build your boards.
- We build a working sample and run it through our wave solder machine.
- We test your custom IoT solution.
- Once the design is finalized it won’t be possible to make changes during production (changes cost money and require us to repeat the above processes)
- Once it meets all your requirements, we will start production as needed.
- We work with our metal fabricators to design a metal enclosure if required.
- You work with our artist to print the top side of the enclosure in full color with your company logo if required.