6. Electronics design¶

General Info¶

Time zone¶

Day	JST	Name	Where	PW
Wed	23:00-2:00	Class	Zoom class	1234
Thu	21:00-22:00	Local session prep	@kannai or Jitsi
Fri	10:00-18:00	Local session	@kannai or Jitsi
Sat	10:00-18:00	Local session	@kannai or Jitsi
Sat	24:00	Global Open Time	Zoom mcu	1234
Mon	23:00-24:00	Recitation	Zoom class	1234
Tue	21:00	Regional Review(Asia)	Jitsi

Daylight Saving Time from Mar 14

Class
- Mar 15: recitation (22:00-23:00)
- Mar 17: embedded programming(22:00-1:00)
Global Open time
- Mar 20: 23:00??
Asian review, Local session
- no change

Large format CNC in Hamamatsu¶

Schedule¶

Mar 13(Sat)
- Kamei
- Ishimura
- Tamiya(stay)
Mar 14(Sun)
- Takezawa
- Tamiya

Material¶

Mar 13 :カインズホーム（雄踏店)
910x1820mm x4 (Group x1, Individual x3)
thickness
- 合板取り扱い品一覧 2017.3

Preparation¶

Design(Ready to cut)
- Fusion360
- Should be parametric
  - material thickness
  - Tool diameter : 6mm
  - dog bone in design
Buy material -> put parameters -> cut
2-3 hours to cut, 1-2 hours to Post-processing
Carry to home

ref. last year local session
ref. homma weekly assignment

Design check¶

Thu, Fri, Sat

Assignment¶

Group assignment:¶

Note

use the test equipment in your lab to observe the operation
of a microcontroller circuit board

Individual assignment:¶

Note

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

TODO: Group assignment¶

use the test equipment in your lab to observe the operation of a microcontroller circuit board

Test equipment
- Multimeter（テスター）
  - TDX-200
    - no beep
  - PM3
    - 電流測定不可
- Oscilloscope
  - Tektronix TBS1052B
observe the operation of a microcontroller circuit board
- Use your board from this week or your programmer
- Multimeter
  - Connectivity
  - Voltage (range: large to small)
  - Current
- Oscilloscope
  - Signal
    - Y axis: Voltage, X axis: Time
  - LED Blink on this week board
    - ref. last year
  - Serial Communication Echo back
    - Use your hello.USB-serial.FT230X
    - Connect RX and TX
      - TX: Transmitter
      - RX: Receiver
    - Open Arduino IDE
      - Select port
      - Open Serial Monitor
      - type one of 1-9. A-Z, a-z… -> Send
        
        (one charactor = 1 byte = 8 bits)
      - find Binary from ASCIIコード
      - Show signals in Oscilloscope
        
        ref. tips_Oscilloscope
  - Screenshot
    - Save/Recall > Action
    - Save All > Printボタン > Saves Image to File
    - Utility > Options > Printer Setup

TODO: 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

redraw an echo hello-world board
- redraw > EDA(electronic design automation)
- an echo hello-world board
  - UPDI
    - ATtiny 412
    - ATtiny 1614
    - ATtiny 3216
- ATtiny1614 hello buzzer board
  - w/button, LED, tact switch, electromagnetic buzzer(+ UPDI 3pin, serial 6pin)
add (at least)
- button + pull up resistor(or in-chip)
- LED + current-limiting resistor 1k [ohm]
- UPDI 3Pin
- Pinout
  - here
- parts
  - Kannai_inventry2021_student
EDA
- Eagle
  - library -> fab.lbr
  - new parts
design rules
- DRC in Eagle board
- Clearance
  - 16 mil
- Size Minimum width
  - 16 mil
- holes
  - ref. Eagle holes making
    1 2
    SET FILL_LAYER 116 1; run drill-aid 0
make it
- fabmodules
  - ensure the path made
- MDX-15
test it
- Arduino IDE
  - Arduino -> preferences -> Additional Boards Manager URLs -> add http://drazzy.com/package_drazzy.com_index.json
  - Tools -> Board -> Board Manager -> search 412 -> megaTinyCore -> version 2.2.5 or later
- upload echo.ino program from class page
  - Use serial monitor in Arduino IDE
- Example -> Digital -> button in Arduino IDE
  - change pin number
  - internal pullup
    - pinMode(5,INPUT_PULLUP) ;

Assessment¶

Electronics Production

Last update: March 6, 2021