dwilsoncaf/relay

SainSmart 16-channel USB-HID programmable relay controller

This module controls a SainSmart 16-channel USB-HID programmable relay.

Usage

$ npm install
$ bin/relay
Usage: node bin/relay <command>

Available commands:
  on <N>  - Turn relay N on
  off <N> - Turn relay N off
  test    - Run a test pattern to ensure all relays are functioning
  reset   - Reset the device state, turn off all the relays

../hidapi/libusb/hid.c:47: fatal error: libusb.h: No such file or directory

If you run into a missing libusb.h during npm install on Ubuntu, try:

sudo apt-get install libusb-1.0-0-dev

Segmentation fault (core dumped)

Currently node-hid will segmentation fault if the current user does not have access to the HID device. The quick way to resolve this is to use sudo:

$ bin/relay test
Detected devices: [ { vendorId: 1046,
    productId: 20512,
    path: '0007:0009:00',
    release: 0,
    interface: 0 } ]
Segmentation fault (core dumped)

$ sudo bin/relay test
Detected devices: [ { vendorId: 1046,
    productId: 20512,
    path: '0007:0009:00',
    manufacturer: 'Nuvoton',
    product: 'HID Transfer',
    release: 0,
    interface: 0 } ]

Required Hardware

Search Amazon for "SainSmart 16-CH USB HID Programmable Control Relay Module + Relay". The unit looks like this:

You will also need a 12V power supply (~1A) connected to the blue connector on the main relay board. Do not connect anything to the green connector on the USB HID board.