Week10: Output Devices

Assignment

add an output device to a microcontroller board you've designed and program it to do something

Output Device

I made my_led board with full color LED "WS2812B".


R1:	Resistance	10k [ohm](1002)	x 1
C1:	Capacitor	1u [F]	x 1
IC1:	Attiny 44		x 1
JP1 ISP:	Pin header	2x3	x 1
JP2 power:	Pin header	2X2	x 1
LED:	WS2812B		x 3
R2,R3,R4:	Resistance	100 [ohm](101)	x 3
C2,C3,C4:	Capacitor	0.1u [F]	x 3

WS2812B data sheet

Module is also provided. To use WS2812B chip on my board, I saw module's circuit diagram.

Circuit Diagram

Eagle

download .sch

download .brd

download .png
download .rml

Arduino Compatible

To change "my_led board" to Arduino compatible, I followed my week 08 assignment page.

This board use internal 8MHz.

No USB serial port to connect

Programmer is AVRISP mkII.

Burn Bootloader

Connect my_led board to DC adapter(5V) and AVRISP.

Download Adafruit_NeoPixel library from github. https://github.com/adafruit/Adafruit_NeoPixel

Copy (or move) "Adafruit_NeoPixel.cpp" and "Adafruit_NeoPixel.h" to "simple" folder, which is same as "simple.ino" placed.

Open "simple.ino" and change line 4,11,14,19,25-27. Line 19 is not clearly written, but it is necessary to change "NEO_KHZ800" to "NEO_KHZ400".
download .ino

FabISP is also be able to use as ISP.

My programming

My program is to change LED color like rainbow.

download .ino