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20140208 自主制作mtg 資料
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Ryusuke Izumida
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水のセンサをつくったよっていうお話と 16セグLED の駆動回路をロジックICでつくったよっていうお話の 2本立てでございます。
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20140208 自主制作mtg 資料
1.
20140208 自主制作MTG 資料
2.
本日のお題目
3.
● 水のセンサを作ってみた ● 16セグLED駆動回路を作ってみた
4.
1.水のセンサを作ってみた
5.
https://vimeo.com/84207218
6.
インスタのしくみ
7.
8.
センサについて
9.
水のセンサ = 静電容量計測
10.
= タッチセンサ
11.
12.
おもしろいところ
13.
直接触らなくても反応する
14.
15.
水じゃなくても導体なら何でもOK
16.
応用範囲いろいろあるかも
17.
2.16セグLED駆動回路を作ってみた
18.
16セグLEDって?
19.
20.
あれ?どこかで見たことが…
21.
https://vimeo.com/36118090
22.
と、いうことで2番煎じです。
23.
技術的なアプローチ
24.
設計コンセプト : 制御レス
25.
● SPI 通信でのデータ転送 ●
ハードウェア制御ダイナミック点灯
26.
SPI 通信でのデータ転送
27.
SPI 通信
28.
= マイコンとかでよく使う通信方式
29.
SPI 専用ハードウェアをもっている マイコンが多い
30.
= ソフトウェアで難しいことしなくても使え る!
31.
SPI インターフェース 8bitバッファ 8bitバッファ
8bitバッファ 8bitバッファ・ ・ ・ SPI (Adr, Data) ドライブ回路 Adr:0x00 Adr:0x01 Adr:0x0A Adr:0x0B
32.
ハードウェア制御ダイナミック点灯
33.
LED を全部同時に制御すると…
34.
電力がヤバい!
35.
いくつかのLEDを順番に高速で点灯
36.
= ダイナミック点灯
37.
いちいちそんな面倒な処理 ソフトウェアでしたくない!
38.
制御部分をハードウェアで作成
39.
8bitバッファ 8bitバッファ 8bitバッファ
8bitバッファ・ ・ ・ Adr:0x00 Adr:0x01 Adr:0x0A Adr:0x0B 6bitリングカウンタ発振回路 ・・・ ・ ・ ・6bit 点灯位置制御ライン 16bit 点灯データライン
40.
と、いう内部構造になってます。
41.
回路図
42.
43.
で、だからなんなの?
44.
= 大量の制御ができる
45.
ex. センサアレイ ex. LED
マトリクス
46.
47.
以上。
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