dcttech usbrelay¶


Status	supported
Source code	dcttech-usbrelay
Channels	up to 8
Ratings	10A 250VAC / 10A 30VDC
Connectivity	USB HID

The dcttech.com USBRelay is a USB relay card with up to 8 relays (models with 1, 2, 4, or 8 relays exist). The firmware is based on V-USB and presents itself as USB HID to the PC (so that no driver installation is required on Windows).

See Info for USB details.

Photos¶

Dcttech Usbrelay2 Top

Dcttech Usbrelay Mugshot

Dcttech Usbrelay4 Bot

Dcttech Usbrelay Diy

Dcttech Usbrelay4 Top

Dcttech Usbrelay2 Bot

Example use¶

Detect the device and display its properties.

 $ **sigrok-cli -d dcttech-usbrelay --scan**
 The following devices were found:
 dcttech-usbrelay:conn=/dev/hidraw2 - www.dcttech.com USBRelay4 [S/N: 12345]

``````
 $ **sigrok-cli -d dcttech-usbrelay --show**
 Driver functions:
     Multiplexer
 Scan options:
     conn
 dcttech-usbrelay:conn=/dev/hidraw2 - www.dcttech.com USBRelay4 [S/N: 12345]
 Channel groups:
     R1: channel
     R2: channel
     R3: channel
     R4: channel
 Supported configuration options across all channel groups:
     conn: /dev/hidraw2 (current)
     enabled: on, off

Display the relay state.

 $ **sigrok-cli -d dcttech-usbrelay --get channel_group=R1:enabled --get channel_group=R2:enabled --get channel_group=R3:enabled --get channel_group=R4:enabled**
 true
 false
 false
 true

Manipulate the state of relays.

 $ **sigrok-cli -d dcttech-usbrelay --config channel_group=R1:enabled=off --config channel_group=R2:enabled=on --set**

Resources¶

V-USB project page, software bitbanging USB for AVR controllers that don't have native USB hardware support
product description and source code repo of a private project that is not related to the vendor, implements OpenSource libraries and CLI and GUI applications to control these cards