7. Electronics design

Class

• class site
• video lesson
• review

Assignment

group assignment:
use the test equipment in your lab to observe the operation of a microcontroller circuit board
individual assignment:
redraw an echo hello-world board, add (at least) a button and LED (with current-limiting resistor) check the design rules, make it, and test it extra credit: simulate its operation

Previous year

• 2019 local session

Assesment

• Electronics Design

Learning outcomes

• Select and use software for circuit board design
• Demonstrate workflows used in circuit board design

Have you?

• Shown your process using words/images/screenshots
• Explained problems and how you fixed them, including how you worked with design rules for milling (DRC in EagleCad and KiCad)
• Included original design files (Eagle, KiCad, Inkscape, .cad - whatever)

Daylight Saving Time

• https://www.timeanddate.com/time/change/usa
• https://www.timeanddate.com/worldclock/ Sunday, 8 March 2020, 02:00:00 clocks are turned forward 1 hour to
  Sunday, 8 March 2020, 03:00:00 local daylight time instead.

Computer-Controlled Machining

• 3/14(土)
• local session
  • デザイン
  • ソフト　VCurve or Cut2Dの使い方
• 3/15(日)
• 新横浜8:21-(ひかり503)-9:27浜松9:43-(東海道本線)-9:48高塚 -> 北口ロータリー
• 金券ショップ@関内
• 材料は当日ホームセンターカインズホーム（雄踏店）に買いに行く
  • 本館　9:00～20:00
  • 資材館　7:00～20:00
  • 3x6板 x2(group用,individual用)
  • カインズホーム（雄踏店）合板取り扱い品一覧
• ソフト
  • Cut2D
• CNC
  • ZN1325
  • シャンク径6mm(6.35はなし)
• hamamatsu students
  • 2015
  • 2016
  • 2018

To Do

individual assignment

• 今後も使用するICを選ぶ
• AVR(ATtiny44.45)
• AVR 1-series
• ARM SAMD
• 書き込み機を作る（まだ作っていない場合）
• AVR 1-series
  • 
  • FTDIとしてecho hello-world boardで使える
  • FTDI cable(5V)と同じ
  • hello.serial-UPDI.FT230XもあればAVR 1-seriesのUPDIプログラマーとして使える
  • ref.in-system development: UPDI (AVR 0,1-series)
• EDA(Electronic design automation、電子設計自動化)を選ぶ
• Eagle
  • library, DRU
  • class page
  • pub
  • ないものUltra Librarianで探す
    • EAGLE new library
• redraw an echo hello-world board
• class page
• add (at least) a button and LED (with current-limiting resistor)
  • LEDの抵抗値計算
  • ref.2019 local session
  • ref.ATtiny1614/similar breakout board (bare board)
  • ref.ATtiny3216/1606 dev board, Arduino compatible
• check the design rules
• EagleにDRUを読み込んで、DRC(Design Roule CHeck)で確認する
• test it
• class pageのechoプログラムを使い、作った基板が動くことを確認する

group assignment

• test equipment
• Multimeter（テスター）
  • TDX-200
  • PM3
  • 電流測定不可

• Oscilloscope: Tektronix TBS1052B

• 作った基板の動きやデバッグでテスターとオシロスコープを使ってみる

• シリアル通信の信号を表示してみる

Useful Links

• PCB Trace Width Calculator

Next week

• Monday Recitation 23:00-24:00
• none
• Tuesday Asian Regional Review 12:00 & 21:00
• 12:00-: zoon http://fab.academany.org/2020/video.html
• 21:00-: zoom or bluejeans Bluejeans.com/u/fablab/1248
• Wendnesday Class 22:00-1:00
• Computer-Controlled Machining
• assignment
  group assignment:
  test runout, alignment, speeds, feeds, and toolpaths for your machine
  individual assignment:
  make (design+mill+assemble) something big