USB/RS485 I/O Controller (Relayduino)

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Download Manual

Download Schematic

Download Arduino Sketch

SoftI2cMaster Arduino Library by William Greiman (for use with SFC-010, requires SCL_PIN to be 13 and SDA_PIN to be 12)

VB2K8 Test Software & Source

VB6 Test Software & Source

Delphi Light Flasher Software & Source

Time-A-Relay software (5th May 2010)

Time-Clock software (5th Dec 2010)

Web Interface Sketch (requires ethernet shield)

An example program has been written in both Visual Basic 6 and VB .Net to show you how to interface with the KTA-223 using a PC.

Light Flasher Software
Our Light Flasher software for the KTA-223 allows you to sequence the relays in patterns. This is designed for Christmas lights, trapshooting and other simple time loop controls.

Time Clock Software
Our Time Clock software for the KTA-223 called Time-Clock allows you to switch on relays at certain times of the day and days of the week. Can be used to control lighting and watering for plants, etc.

Web Interface Sketch
Using the WebUi sketch and an Ethernet shield allows you to control the IO from a web browser.

Weight: 0.50 kg

KTA-223 ‘Relayduino’ USB/RS485 IO Module:

The KTA-223 is a USB or RS485 controlled IO module for interfacing PCs to real world applications, such as controlling lights and sprinkler systems, reading sensors and monitoring switches and other digital signals. The Relays are capable of switching up to 5A at 250VAC, 10A at 120VAC and 10A at 24VDC but the PCB tracks will only handle up to about 5A. A simple ASCII protocol allows control from Windows/Mac/Linux using either USB Virtual COM drivers or RS485. Additionally, multiple devices can be connected to one RS485 bus, allowing control of many devices from one USB port.

The controller is based on the hardware of the Arduino physical computing controllers. It can be programmed as a stand-alone controller using the free, open source Arduino environment. Internally, the controller is “shield compatible”, allowing the use of many extension boards designed for the Arduino Deumilanove. As shipped the controller is loaded with a sketch that receives simple commands over the USB or RS485 serial port and switches relays or responds with the status of inputs.

Multiple controllers can be connected to one or more PCs in an RS485 network. Each controller can be assigned an address and will respond to commands addressed to them.

Features:

8 Relay Outputs 5A 250VAC
4 Opto-Isolated Inputs 5-30VDC
3 Analog Inputs (10 bit)
Connections via Pluggable Screw Terminals
0-5V or 0-20mA Analog Inputs, Jumper Selectable
5A Relay Switching
Power Indicator LED
All enclosed in Professional looking plastic case
Arduino Compatible
Accepts Arduino Shields (Ethernet / XBee)
USB Virtual Serial Port or RS485 Input
Easily connect multiple units far apart by RS485

Quantity	Price
1 – 9	$148.95
10 – 99	$141.75
100 +	$137.03

Skill Level of Item:		(Assembled and Tested)
Product #		BB282
Quantity Available:		5

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Output plug: 2.5mmID x 5.5mmOD female center positive
(BB204)

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Click here for specs, downloads, and more pictures.

Arduino Uno

Arduino is an open-source physical computing platform based on a simple i/o board and a development environment that implements the Processing/Wiring language. Arduino can be used to develop stand-alone interactive objects or can be connected to software on your computer (e.g. Flash, Processing, MaxMSP). The open-source IDE can be downloaded for free (currently for Mac OS X, Windows, and Linux).

This is the new Arduino Uno. In addition to all the features of the previous board, the Uno now uses an ATmega8U2 instead of the FTDI chip. This allows for faster transfer rates, no drivers needed for Linux or Mac (inf file for Windows is needed), and the ability to have the Uno show up as a keyboard, mouse, joystick, etc.

Features:

ATmega328 microcontroller
Input voltage - 7-12V
14 Digital I/O Pins (6 PWM outputs)
6 Analog Inputs
32k Flash Memory
16Mhz Clock Speed

Quantity	Price
1 – 9	$30.99
10 – 99	$28.80
100 +	$27.84

Skill Level of Item:		(Assembled and Tested)
Product #		DEV09950
Quantity Available:		8

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Serial Isolated I/O Module (Assembled & Tested) (Out of Stock)

8-Relay Module (mains rated - 110V and 250VAC.) An extension of our Kit CPS74, PC controlled 8-Relay Board with 250V switching relays and added features. It is in a plastic case, latched relay operation, 250V relays switched in safety by using Dinkle connectors, and with 4 external inputs. Uses serial port so it can be located over 100 yards from the PC. Comes with case and end panel pieces as shown in the photos. Requires a center positive 9-to-12V DC power supply, at least 500mA, 2.5mm jack. (CPA108)

Quantity	Price
1 – 9	$107.56
10 – 99	$99.99
100 +	$96.57

Skill Level of Item:		(Assembled and Tested)
Product #		CPA108
Quantity Available:		0

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Serial Isolated I/O Module (kit)

8-Relay Module (mains rated - 110V and 250VAC.) An extension of our Kit CPS74 (see next kit), PC controlled 8-Relay Board with 250V switching relays and added features. It is in a plastic case, latched relay operation, 250V relays switched in safety by using Dinkle connectors, and with 4 external inputs. Uses serial port so it can be located over 100 yards from the PC. Comes with case and end panel pieces as shown in the photos. Requires a center positive 9-to-12V DC power supply, at least 500mA, 2.5mm jack. (CPS108)

Quantity	Price
1 – 9	$87.21
10 – 99	$81.00
100 +	$78.30

Skill Level of Item:		(Kit - Basic Soldering Required)
Product #		CPS108
Quantity Available:		9

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Modbus I/O Module 12VDC Powered

Description: The KTA-224 is a Modbus Slave IO module for interfacing to any PLC or PC using the Modbus protocol. It behaves as a Modbus Slave and Relays, Inputs and Outputs are controlled by writing to and reading from the Coils and Holding Registers. It can be used for many applications such as controlling lights and sprinkler systems, reading sensors and monitoring switches and other digital signals, or even for industrial control.

The module can connect to a standard RS485 2-wire half duplex network or to a computer via USB. When connected via USB, the module acts as a USB to RS485 converter and multiple IO units (or other Modbus devices) can be connected to the RS485 bus. USB drivers are available for Windows, Mac and Linux.

The user can save a set of output statuses to be loaded when the unit is powered up or reset. A watchdog timer can be configured to reset the unit after a user-definable number of seconds since the last communication from a Modbus master.

Quantity	Price
1 – 9	$152.62
10 – 99	$141.75
100 +	$137.03

Skill Level of Item:		(Assembled and Tested)
Product #		BB245
Quantity Available:		4

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PC Printer Port Relay Board (Assembled) (version 2)

Do you have an old PC lying around the house which absolutely no one wants? Then you can convert it into a dedicated controller. Communicate with the real world via the parallel printer port on your PC. Simply connect a DB25 straight trough cable from computer to DB25 connector on the relay board. There are 8 relays each capable of switching 12VDC/10A or 240VAC/5A. Each relay has an LED to indicate when it is operated. We provide two sets of complete, stand-alone software to control the relays: one works under DOS so you can write your own batch files to control individual relays, the other works under Windows. Needs 12VDC center positive 2.5mm power supply. PCB Size 6.75" x 2.75" (CPA74)

Quantity	Price
1 – 9	$39.99
10 – 99	$37.80
100 +	$36.54

Skill Level of Item:		(Assembled and Tested)
Product #		CPA74
Quantity Available:		14

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PC Printer Port Relay Board (kit) (version 2)

Do you have an old PC lying around the house which absolutely no one wants? Then you can convert it into a dedicated controller. Communicate with the real world via the parallel printer port on your PC. Simply connect printer cable from computer to Centronics connector on relay board. There are 8 relays each capable of switching 12VDC/10A or 240VAC/5A. Each relay has an LED to indicate when it is operated. We provide two sets of complete, stand-alone software to control the relays: one works under DOS so you can write your own batch files to control individual relays, the other under Windows 3.1. Needs 12VDC center positive 2.5mm power supply. PCB Size 6.75" x 2.75" (version 2) (CPS74)

Quantity	Price
1 – 9	$36.34
10 – 99	$33.75
100 +	$32.63

Skill Level of Item:		(Kit - Basic Soldering Required)
Product #		CPS74
Quantity Available:		9

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Parallel port output module (V2) (Assembled)

Once stock on hand is sold out for this item, it will no longer be available as pre-assembled. It will still be available as a kit requiring soldering.

This is our Kit 74V2 but put into a box with top quality Dinkle connectors to the relays. With the rapid progress in computer technology many people now have a surplus computer just gathering dust somewhere. Thus these computers are free to be used as dedicated controllers for a variety of uses: turning on/off lights or other devices around the home, office, laboratory or factory come to mind. All that is needed is the interface to connect it to the real world. (CPA165)

Quantity	Price
1 – 9	$65.41
10 – 99	$60.75
100 +	$58.73

Skill Level of Item:		(Assembled and Tested)
Product #		CPA165
Quantity Available:		4