垃圾 pcb from 鴨寮街 (FInal Report, Project Close)

基本上 hardware, firmware, pc client 已完成 (粒 at90s8515 已九成滿, frame rate 亦已好盡), 做番個 final report, round up 個 project.

http://www.hkepc.com/forum/viewthread.php?tid=1161994 (part 1)
http://www.hkepc.com/forum/viewthread.php?tid=1175955 (part 2)

Hardware:
160x32 雙色 led board
AT90S8515 (8k flash RAM) running at 7.3728MHz
DS1302 RTC (Trickle-Charge Timekeeping Chip), with 3.6V NiMH backup battery
IS61C1024 (128K x 8 HIGH-SPEED CMOS STATIC RAM), but only 32k are used in the board! 真浪費!
W29C020 (256K x 8 CMOS FLASH EEPROM), page write mode
MAX3082 (RS-485/RS-422 Transceivers)
A6276 (16-Bit Serial Input, Constant-Current Latched LED Driver, shift register)

Firmware:
Development platform: AVR Studio + WinAVR + GCC (with a few inline assembly)
Program Size: 7162 bytes (87.4% Full). So there might not be further room for significant enhancement!

PC Client:
Development platform: Visual Studio, C#
Functions:
Image/Clock/Text presentation control
Support 8 memory banks (each can hold 26k data), each bank can hold 20 entries and each bank can be turn on/off individually
RSS channel (automatically download to LED Board at 10 minutes interval, of course the serial interface must be connected, I am thinking about wireless bluetooth transmission)
Grey level 1-4 (some flickering when at Level 4)
Frame rate (160x32 board):
Grey Level 1: 115fps
Grey Level 2: 57fps
Grey Level 3: 38fps
Grey Level 4: 28fps
Effects: General Top/Bottom in/out, Left/Right in/out, station time 0-30 seconds etc.

多謝

youtube demo:
http://www.youtube.com/watch?v=FDAbVKpuHbk

[ 本帖最後由 ktktkt 於 2009-4-11 18:29 編輯 ]
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巴打有料到 我估你開班教人 實唔少兄弟會上..叫ive請你週六/日 開班啦
不過要買齊呢d套件都唔易..

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原帖由 zenchiu 於 2009-4-13 18:13 發表
巴打有料到 我估你開班教人 實唔少兄弟會上..叫ive請你週六/日 開班啦
不過要買齊呢d套件都唔易..


係 ive 週六/日 開班 好 "un" 架咋

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