README.md

Server for send signals to arduino pixel_meter or AnyBar.

Usage

• Start server, it will default listen at *:8246
• Send POST request to /status like this:

http -f POST http://localhost:8080/status value=50 message='first string\\second string' blink=2

• Or configure your Kapacitor to /kapacitor like this:

data
    |alert()
        .post('http://localhost:8246/kapacitor')

Configure server

Command-line parameters

pixel-server \
--web-host="" \
--web-port=8246 \
--serial-port=COM3 \
--serial-speed=9600
--anybar-port=1738
--brightness=100

Environment variables

PIXEL_SERVER_SERIAL_PORT=COM3 \
PIXEL_SERVER_SERIAL_SPEED=9600 \
PIXEL_SERVER_WEB_HOST= \
PIXEL_SERVER_WEB_PORT=8246 \
PIXEL_SERVER_ANYBAR_PORT=1738 \
PIXEL_SERVER_BRIGHTNESS=100 \
pixel-server

Command-line parameters has priority over environment variables.

Request parameters for /status

• value - value of signal, required,
  0 to 100 (red to green),
  -1 for off led
• message - message for 16x2 display, lines should be splitted with \ symbol, default no message
• blink - blink state, default 0,
  0 for not blinking,
  1 for blink 3 times and back to previous state,
  2 for persistent blinking
• brightness - led brightness, 0 to 100, default 100

Examples:

http -f POST http://localhost:8246/status value=50

Behaviour

If status changes from red to green, will be used smooth color change. If status changes from green to red, color will changed with blinking with last color.