자전거 후미등 프로젝트 
https://tumblbug.com/bike-led-light 

프로그래밍 가능한 자전거 후미등 

개발기간: 2011년 7월 5일~ 2012년 4월 1일 

http://github.com/donghee/firefly 


===== 개발 일지 =====

  * 2012년 2월 26일 
개똥벌레 프로젝트 한지 1년여 시간이 된것 같다. 이제 매일 작업 일지를 남기자. 

===== 부품 =====

24LC256
 http://maniacbug.github.com/M24LC256/classM24LC256.html

부품 리스트:http://goo.gl/PW8Ze
  *  MSP430G2131 sop: 1500원정도
  *  LM358D
  *  24LC256 I2C EEPROM 
  *  WS2801
  *  3색 LED
  *  NCP1400ASN33T1G step-up 3.3v

===== 구매 내역 =====
spartfun.com: 2011년 8월 15일

^ 사진  ^ 제품명 ^  갯수 ^ 가격 ^
| {{https://dlnmh9ip6v2uc.cloudfront.net/images/products/soapbox_open_l_th.jpg}} | Soap Box Project Enclosure	 | 2 | $7.90  ($3.95 each) |
| {{https://dlnmh9ip6v2uc.cloudfront.net/images/products/EEPROM_l_th.jpg}} | I2C EEPROM - 256kbit | 5 | $9.75 ($1.95 each) |
|{{https://dlnmh9ip6v2uc.cloudfront.net/images/products/08632-06-L_l_th.jpg}}| SparkFun Projects Case - Clear | 1 | $11.95 |
| {{https://dlnmh9ip6v2uc.cloudfront.net/images/products/08798-01-L_l_th.jpg}} | SparkFun Stickers | 2 | $0.60 ($0.30 each) |
| {{https://dlnmh9ip6v2uc.cloudfront.net/images/products/09216-1_l_th.jpg}}| NCP1400-3.3V Step-Up Breakout | 3 | $17.85 ($5.95 each) |
| {{https://dlnmh9ip6v2uc.cloudfront.net/images/products/10444-01_l_th.jpg}} | WS2801 IC | 5 | $3.75 ($0.75 each) |
| {{https://dlnmh9ip6v2uc.cloudfront.net/images/products/10504-01_l_th.jpg}} | WS2801 Breakout | 3	| $14.85 ($4.95 each) |
| {{https://dlnmh9ip6v2uc.cloudfront.net/images/products/10595-01_l_th.jpg}} | Circular LED Bargraphs | 1	| $9.95  |
| {{https://dlnmh9ip6v2uc.cloudfront.net/images/products/10596-01_l_th.jpg}}| Rotary Encoders - Illuminated | 1 | $2.9 |
총구매액: $79.55 + $37.53(운임): $117.08

2차 구매


===== 참고자료 =====
  * msp430과 eeprom 통신 
  * http://www.eetkorea.com/STATIC/PDF/201105/EEKOL_2011MAY24_STOR_AN_01.pdf?