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2 layers192.7 × 104.5 mmDelay, the printed circuit board in 3D

KiCad schematics and PCB layouts for my modular synth

Size
192.7 × 104.5 mm
Copper layers
2
Thickness
1.6 mm
Parts
186
Nets
140
Pads
530
Tracks, vias
1,020, 96
Pours
1
Routed
Yes
KiCad
KiCad 6 (file 20211014)
Created
30 Dec 2021
Updated
26 Apr 2025

Overview

Delay is an open-source printed circuit board by MatthewATaylor, from the MatthewATaylor/Modular-Synth-Hardware repository on GitHub, published under the MIT licence. It is a 2-layer board of 192.7 × 104.5 mm with 186 parts on 140 nets, routed with 1,020 tracks and 96 vias.

It is built around the PT2399 and TL072. Its parts include 72 resistors, 69 capacitors, 12 ICs, 11 connectors and 6 diodes. It belongs with the audio and music boards of this library.

Main components

2

README

Delay/README.md

Delay

A triple PT2399 delay module, including individual and master delay time CV and daisy chaining controls.

Parts

186
QtyValueFootprintReferences
330.1uCapacitor_THT:C_Disc_D5.0mm_W2.5mm_P5.00mmC201, C203, C206, C210, C211, C217, C218, C219, C220, C221, C222, C301, C303, C306, C310, C311 +17
15150kResistor_THT:R_Axial_DIN0207_L6.3mm_D2.5mm_P7.62mm_HorizontalR202, R203, R204, R205, R208, R302, R303, R304, R305, R308, R402, R403, R404, R405, R408
1210kResistor_THT:R_Axial_DIN0207_L6.3mm_D2.5mm_P7.62mm_HorizontalR215, R216, R219, R220, R315, R316, R319, R320, R415, R416, R419, R420
1150kPotentiometer_THT:Potentiometer_Alpha_RD901F-40-00D_Single_Vertical_CircularHolesRV101, RV102, RV201, RV202, RV203, RV301, RV302, RV303, RV401, RV402, RV403
10AudioJack2_SwitchTConnector_Audio:Jack_3.5mm_QingPu_WQP-PJ398SM_Vertical_CircularHolesJ102, J103, J104, J105, J106, J107, J108, J201, J301, J401
9100kResistor_THT:R_Axial_DIN0207_L6.3mm_D2.5mm_P7.62mm_HorizontalR201, R206, R212, R301, R306, R312, R401, R406, R412
910uCapacitor_THT:C_Disc_D5.0mm_W2.5mm_P5.00mmC107, C108, C109, C215, C216, C315, C316, C415, C416
915kResistor_THT:R_Axial_DIN0207_L6.3mm_D2.5mm_P7.62mm_HorizontalR209, R213, R218, R309, R313, R318, R409, R413, R418
95.6kResistor_THT:R_Axial_DIN0207_L6.3mm_D2.5mm_P7.62mm_HorizontalR207, R217, R222, R307, R317, R322, R407, R417, R422
9TL072Package_DIP:DIP-8_W7.62mm_SocketU201, U202, U203, U301, U302, U303, U401, U402, U403
61.5kResistor_THT:R_Axial_DIN0207_L6.3mm_D2.5mm_P7.62mm_HorizontalR210, R221, R310, R321, R410, R421
61kResistor_THT:R_Axial_DIN0207_L6.3mm_D2.5mm_P7.62mm_HorizontalR211, R223, R311, R323, R411, R423
64.7nCapacitor_THT:C_Disc_D5.0mm_W2.5mm_P5.00mmC207, C214, C307, C314, C407, C414
64.7uCapacitor_THT:C_Disc_D5.0mm_W2.5mm_P5.00mmC204, C208, C304, C308, C404, C408
6680pCapacitor_THT:C_Disc_D5.0mm_W2.5mm_P5.00mmC209, C212, C309, C312, C409, C412
310Resistor_THT:R_Axial_DIN0207_L6.3mm_D2.5mm_P7.62mm_HorizontalR101, R102, R103
3100uCapacitor_THT:CP_Radial_D5.0mm_P2.00mmC202, C302, C402
310nCapacitor_THT:C_Disc_D5.0mm_W2.5mm_P5.00mmC213, C313, C413
31N4148Diode_THT:D_DO-35_SOD27_P7.62mm_HorizontalD201, D301, D401
31N5819Diode_THT:D_DO-41_SOD81_P10.16mm_HorizontalD101, D102, D103
32N3904Package_TO_SOT_THT:TO-92_HandSolderQ201, Q301, Q401
347uCapacitor_THT:CP_Radial_D5.0mm_P2.00mmC205, C305, C405
38.2kResistor_THT:R_Axial_DIN0207_L6.3mm_D2.5mm_P7.62mm_HorizontalR214, R314, R414
3PT2399Package_DIP:DIP-16_W7.62mm_SocketU204, U304, U404
2SW_SPDTCustom:MTS-102_MTS-103_MTS-112_MTS-113_MTS-123SW101, SW102
1Conn_02x08_Odd_EvenConnector_PinHeader_2.54mm:PinHeader_2x08_P2.54mm_VerticalJ101

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Questions

How big is the Delay PCB?

It measures 192.7 × 104.5 mm and has 2 copper layers, 1.6 mm thick.

What parts does the Delay use?

186 parts, built around the PT2399 and TL072. The full list of its parts is on this page, with links to each part's symbol and footprint where PCBKit's library has them.

Where can I download the Delay KiCad files?

From the MatthewATaylor/Modular-Synth-Hardware repository on GitHub, at the commit this page was made from: the board is Delay/Delay.kicad_pcb. PCBKit opens the board in the browser, with nothing to install.

Can I use the Delay design in my own project?

Its repository publishes it under the MIT licence: you may reuse it on that licence's terms (keep the author's notice, and for a copyleft licence share your changes alike).