ER-DELAY-01

Features

• PT2399 Delay/Echo
  • The PT2399 is a CMOS single-chip echo processor IC
  • A high sample rate ADC converts the analog data into a bitstream, which is then stored in internal 44Kbit RAM
  • After processing, the bitstream is de-modulated by DAC and lowpass filter
  • The internal VCO clock frequency determines the overall delay duration
  • The user can easily modify the VCO frequency by changing the external resistance
• Eurorack 3U, 6HP card
• Built on ER-PROTO-02 card
• PT2399 has a maximum current of 30mA
• Jacks
  • J5 IN
  • J6 OUT
• Controls
  • RV1 In/Out mix
  • RV2 Delay Length
• 10 pin Eurorack power jack

Design

• ER-PROTO-02 card set
  • Front Panel
  • Controls Card
  • Daughtercard

Daughtercard Prototyping Area

Parts Placement

• Partly built

• PT2399 Pin 1 on bottom left

PT2399 Delay IC

Pots connector on Daughtercard

Jacks connector on Daughtercard

Power connector on Daughtercard

5V Power Regulator

Pots connector on Controls card

Pots connector on Controls card

Schematic

• Schematic

Nets

+5V,C10-1,C18-1,J28-1,U1-1,U2-1,
+12V,C1-1,C2-1,D1-1,J15-1,J15-2,J15-3,J15-4,J15-5,U2-3,
+12VA,J9-10,J9-9,RA1-2,
/IN,C17-2,J29-14,R13-2,
/J4-T,J29-6,
/OUT,C14-2,J29-8,
/P2,C3-1,U1-2,
/P6,R1-1,U1-6,
/P7,C4-1,U1-7,
/P8,C5-1,U1-8,
/P9,C7-1,U1-9,
/P10,C7-2,U1-10,
/P11,C6-1,U1-11,
/P12,C6-2,R3-2,U1-12,
/P13,C8-2,R4-2,U1-13,
/P14,C8-1,R5-2,R9-1,U1-14,
/P15,C11-2,R6-1,R8-1,U1-15,
/P15A,C14-1,R8-2,
/P16,C11-1,R7-1,U1-16,
/P16A,C15-1,C16-1,R12-2,R6-2,R7-2,
/POT1-2,C15-2,J28-18,
/POT1-3,C12-2,J28-19,
/POT3-1,J28-14,
/POT3-2,J28-15,
/POT3-3,J28-16,
/VCO,J28-8,R1-2,
GND,C1-2,C10-2,C13-2,C16-2,C18-2,C2-2,C3-2,C4-2,C5-2,C9-2,J28-20,J29-1,J29-15,J29-16,J9-3,J9-4,J9-5,J9-6,J9-7,J9-8,R13-1,U1-3,U1-4,U2-2,
Net-(C9-Pad1),C9-1,R3-1,R4-1,R5-1,
Net-(C12-Pad1),C12-1,C13-1,R9-2,
Net-(C17-Pad1),C17-1,R12-1,
Net-(D1-Pad2),D1-2,RA1-1,
Net-(J5-PadS),J5-S,J6-R,J7-15,J7-16,
Net-(J5-PadT),J5-T,RB7-1,
Net-(J6-PadS),J6-S,J7-1,J7-2,
Net-(J6-PadT),J6-T,R17-1,
Net-(J7-Pad8),J7-8,R17-2,
Net-(J7-Pad14),J7-14,RB7-2,
Net-(J8-Pad8),J8-8,RV2-1,
Net-(J8-Pad18),J8-18,RB1-2,
Net-(J8-Pad19),J8-19,RV1-3,
Net-(J11-Pad1),J11-1,RV2-2,RV2-3,
Net-(J11-Pad2),J11-2,J14-2,J8-1,J8-20,
Net-(J14-Pad1),J14-1,RV1-1,
Net-(RB1-Pad1),RB1-1,RV1-2,

• Glam Chorus with Vibe Mod

Measurements

• Bass Drum echo

• Both Mix/Length knobs full CCW

Reference

• Little Angel Chorus

Videos

• Kristian Blåsol