ER-SCOPE-01

Features

• HAGIWO design
• Differences from HAGIWO
  • Using Arduino Pro Mini - smaller package than NANO
    • No USB but USB is not used after download anyway
  • Using I2C 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

Design Details

• Built on ER-PROTO-02 card set

Front Panel

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

• OLED - replace connector with 1x4 right angle connector

• Wiring
  • Green = Ground
  • Red = VCC (+5V)
  • Yellow = SCL
  • Blue = SDA

On Controls card

• 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

On Daughterboard

CPU

• Arduino Pro Mini CPU

Pots connections

Jacks connections

Power

Software

• ER-SCOPE Hardware tests
• ER_SCOPE_V01 - Application code