aurora

Control ws2812b pixel with an atmege328p. The tcp stack based on the tuxgraphic tcp stack (http://tuxgraphics.org/electronics/).

You can change the color of the pixel with an simple tcp message, like a hex string. Use an individual tcp-server or node-red. Also see my other project named 'sphere'. This is a nodejs based http-server to control several aurora server.

Externals

• light_ws2812 V2.4 (light_ws2812_AVR)
• eth_lcd_tcp-2.10

Hardware

• atmega328p nano board
• enc28J60 nano Ethernet shield
• ws2812b 300pxl
• lcd - 2x16 hd44780

wiring

atmega328p	enc28J60	lcd 2x16	ws2812b
PD2		PIN4 - RS (v0.0.1 only)
PD3		PIN6 - E (v0.0.1 only)
PD4		PIN11 - D4 (v0.0.1 only)
PD5		PIN12 - D5 (v0.0.1 only)
PD6		PIN13 - D6 (v0.0.1 only)
PD7		PIN14 - D7 (v0.0.1 only)
PD8			DIN
PD10	SS
PD11	MOSI
PD12	MISO
PD12	SCK

Getting started

You can use the make file after git clone. The default ipAddress is 10.11.0.100, change this in aurora.c static uint8_t myip[4] = {10,11,0,100}; //10.11.0.100

gcc version 4.8.2 (GCC)

API description:

standard response:

byte	description
0-1	length 4 (low byte first)
2	CMD
3	port

error response:

byte	description
0-1	length 4 (low byte first)
2	0xff
3	error code

commands

clearPixel:

clear the internal buffer of led matrix

byte	description
0-1	length 3 (low byte first)
2	CMD_CLEARPIXEL = 0x12

setColor:

set the color of all pixel. Pixels hardcoded as define 'MAX_PIXEL'.

byte	description
0-1	length 7 (low byte first)
2	CMD_SETCOLOR = 0x15
3	PIN
4	color value red
5	color value green
6	color value blue

setPixel:

set the color of an specific pixel.

byte	description
0-1	length 9 (low byte first)
2	CMD_SETPIXEL = 0x13
3	PIN
4-5	pixel (low byte first)
6	color value red
7	color value green
8	color value blue

setRange:

set the color of an specific range.

byte	description
0-1	10 (low byte first)
2	CMD_SETRANGE = 0x14
3	PIN
4-5	first pixel (LBGF)
6-7	last pixel (LBGF)
8	color value red
9	color value green
10	color value blue

controller

• sphere, browser based gui
• gravity-aurora, npm package

Supported Hardware

mcu	controller	versiont
atmega328p	ws2812b (300pxl)	v0.0.1	✅
		v0.0.2	✅

Road-map

• • add digital input/output