YKUR is a relay board with one in-board relay and four additional relay drivers. The switching of the in-board relay and four relay driver ports is controllable from USB and I²C interfaces.

The relay driver ports can be used to drive both mechanical and solid state relays (SSR).

The on-board relay can switch voltages up to 277VAC and 30VDC being rated for current up to 10A. The four external relay driver ports can each support current up to 360mA at 5V, but the total board current is limited to 500mA.

Controlling from USB

When connected through USB to a PC (or other USB Host), YKUR is seen as an HID USB device which does not require the installation of drivers and becomes automatically available to the control application software ykurcmd.

The control application is an open source software that can be used as-is, altered by the user or used as a reference for a custom built software.

For more on how to use YKUR with USB control interface check YKUR Setup Guide - USB.

Controlling from I²C

Additionally to USB, I²C interface can also be used to control YKUR boards.

I²C interface facilitates integration into microcontroller environments and can be used concurrently with USB.

YKUR is configured as a slave I²C device with 7 bit address 0b1010001.

Technical Specifications

Applications

Target applications include the remote automatic control of connecting and disconnecting electrical signals and devices.

Key Features

USB bus powered or externally powered using a 5VDC power supply
One on-board relay which can switch voltages up to 277VAC and 30VDC supporting currents up to 10A
Four additional relay driver ports external mechanical or solid state relays
Individual control of the on-board relay and each of the four external relay driver ports

Key Benefits

Four external relay driver ports in addition to the on-board relay provides scalability
Ready-to-use fully functional utility source code is available to download
Small footprint facilitates the integration into space constrained project cases
Dual powering mode (bus powered or external powered) increases flexibility
Simple and documented control protocol facilitates custom development and integration into user own software