ER-GATE-SEQ-01

Features

• GATE Sequencer
• Based on HAGIWO Euclidean rhythm sequencer
• OLED Display: 128*64 size
• Rotary Encoder: Parameter Selection
• PUSH Button: Parameter Change/Determination
• Trigger Output: 6CH (0-5V) Trigger Input: 1CH (0-5V)

HAGIWO Design

HAGIWO Menu System

• Rotary Encoder: Parameter Selection
• PUSH Button: Parameter Change/Determination
• 6 Parameters - Arrow points to current channel/option
  • 1-6, R: Select channel 1-6 (upper right, top row), Random
  • H: Hits (Upper right, middle row) - Number of points
    • Number of outputs out of 16 steps
  • O: Offset (Upper right, bottom row)
    • Shift the start of the rhythm by offsetting LIMIT
    • Return to the first step when there is a trigger input for the number of times the set value is set
      • For example, if you set it to 5, it will return to the first step after outputting 1~5 steps. It can be used in a polyrhythmic way
  • L: Limit (lower left, top row) - number of steps
  • M: Mute channel (lower left, middle row)
    • Eliminates the trigger output of the selected CH.
  • R: Reset (lower left, bottom row)
    • Press the button to return the playback step of all channels to the first step

Build on ER-PROTO-02 Card

• ER-PROTO-02

Front Panel

• OLED mounts over RV1-RV4
• Cut bigger hole for OLED connector

Controls card

• J1-J6 are OUT1-OUT6
• Series output resistors for jacks on card
• RV6 is Rotary Encoder
• RV4 has Rotary Encoder switch contacts
• Cut out at RV5 for GATE IN on Controls card

• Jacks connections

• Pots connections

Logic card

• Arduino Pro Mini - with ATMega328
• Pass SDA/SCL to bottom (1x4 right angle header on bottom)
  • SDA/SCL are right angle header on Pro Mini

Daughtercard Prototyping Area

Circuits

• Rotary Encoder / Switch connections

• Jacks connections

• Arduino

• OLED

Prototype Build

Arduino Sensor Shield

• Arduino UNO
• Arduino Sensor Shield

Rotary Encoder

• Rotary Encoder
• Pinout

1. G
2. V
3. B
4. A
5. Switch

• Viewed from bottom

GVS Switch

• GVS-Switch

SCF-2 - Jacks

• SCF-2 - Jacks
• One card populated with 1 3.5mm jack
• 3 cards populated with 2 jacks

Software

• ER_GATE_SEQ_TEST_V1.ino - Hardware test code
  • Test all 6 GATE outputs
  • Use CLK_IN as an OUT for this test only
• ER_EUC_SEQ_V1.ino
  • Euclidean rhythm sequencer - HAGIWO build
• 6CH Trigger Sequencer - HAGIWO previous version