ER-SCOPE-01

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Tindie-mediums.png

ER-SCOPE-01 P1090046-720px.jpg

Features[edit]

  • HAGIWO design
  • Differences from HAGIWO
    • Using Arduino Pro Mini - smaller package than NANO
      • No USB but USB is not used after download anyway
    • Initially used I2C OLED
      • Probably affects screen refresh rates
      • Switched to SPI OLED
  • OLED : 128*64 pixel 0.96inch
  • Knob1: Rotary encoder for selection (including push switch)
  • Knob2: GAIN
  • Toggle SW : AC/DC switching
  • TRIG IN : External trigger IN
  • Input : Signal to be observed IN
    • Observable voltage is 5 V p-p
  • Output : Observable signal OUT (short circuit with INPUT)

HAGIWO Schematic[edit]

HAGIWO ER-SCOPE.png

Design Details[edit]

Front Panel/OLED Mounting[edit]

  • Glue on OLED with a couple of drops of Hot Glue in corners
  • White on Black P Touch labels

ER-SCOPE-01 P1090044-720pxV.jpg

  • 7 pin right angle header mounted to rear of daughtercard
  • OLED - replace straight header with 1x7 right angle header

ER-SCOPE-01 P1090053-720px.jpg

  • SPI wire colors on schematic

ER-SCOPE-01 OLED SPI.PNG

  • Tuck OLED wiring around switch

ER-SCOPE-01 P1090050-720px.jpg

On Controls card[edit]

ER-SCOPE-01 P1080958-720px.jpg

  • Wire top pin of R7 to top pin of R17 (connects J5 to J6 tip)
  • SW1 goes in cutout at J1
  • SW1 up = DC coupled, down = AC coupled
  • R7 stands up at bottom of R7 and wires to SW1 center
  • 4.7uF cap from SW1 top to SW1 bottom
    • + side of cap to SW1 bottom
    • - side of cap to SW1 top
  • Wire from J5 tip to SW1 bottom

ER-SCOPE-01 J7 JACKS ON CTRLS.PNG

ER-SCOPE-01 J8 POTS ON CTRLS.PNG

On Daughterboard[edit]

CPU[edit]

ER-SCOPE-01 P1090049-720px.jpg

  • Arduino Pro Mini CPU

ER-SCOPE-01 CPU.PNG

  • I2C header used with I2C OLED

2014-05-14T23 52 48.894Z-3-720px.jpg

Pot/Rotary Encoder connections[edit]

  • Solid resistor wires are "stiff" enough to not need to use insulation

ER-SCOPE-01 P1080978-CTL-RES.jpg

ER-SCOPE-01 J28 POTS ON DB.PNG

Jacks connections[edit]

ER-SCOPE-01 P1080978-JACKS-RES.jpg

ER-SCOPE-01 J29 JACKS ON DB.PNG

Power[edit]

ER-SCOPE-01 P1080978-POWER.jpg

ER-SCOPE-01 J9 PWR ON DB.PNG

Software[edit]

Sketch uses 19866 bytes (64%) of program storage space. Maximum is 30720 bytes.
Global variables use 807 bytes (39%) of dynamic memory, leaving 1241 bytes for local variables.
Maximum is 2048 bytes.

ER-SCOPT-01 P1080982-720pxV.jpg