2 layers119.1 × 151.8 mm Arduino delay, the printed circuit board in 3D

Arduino delay

Size: 119.1 × 151.8 mm
Copper layers: 2
Thickness: 1.6 mm
Parts: 59
Nets: 58
Pads: 184
Tracks, vias: 358, 0
Routed: Yes
KiCad: KiCad 10.0 (file 20260206)
Created: 22 Nov 2025
Updated: 7 Nov 2026

Overview

Arduino delay is an open-source printed circuit board by gridbugs, from the gridbugs/modular2 repository on GitHub, published under the MIT licence. It is a 2-layer board of 119.1 × 151.8 mm with 59 parts on 58 nets, routed with 358 tracks and 0 vias.

Its parts include 13 resistors, 10 connectors, 7 capacitors, 3 switches and 2 ICs. It belongs with the AVR (ATmega, ATtiny) boards of this library.

README

low-pass-filter/README.md

Low-pass Filter

Quirks

V1

The "Cutoff" potentiometer is reversed.

Parts

Qty	Value	Footprint	References
4	100nf	Capacitor_THT:C_Disc_D4.3mm_W1.9mm_P5.00mm	C1, C5, C6, C7
3	100K	Resistor_THT:R_Axial_DIN0207_L6.3mm_D2.5mm_P10.16mm_Horizontal	R4, R8, R12
3	1K	Resistor_THT:R_Axial_DIN0207_L6.3mm_D2.5mm_P10.16mm_Horizontal	R10, R11, R13
2	100nF	Capacitor_THT:C_Disc_D4.3mm_W1.9mm_P5.00mm	C3, C4
2	1N4148	Diode_THT:D_DO-35_SOD27_P7.62mm_Horizontal	D1, D2
2	4.7K	Resistor_THT:R_Axial_DIN0207_L6.3mm_D2.5mm_P10.16mm_Horizontal	R1, R7
2	CV	modular2:banana-jack	J4, J10
2	Input	modular2:banana-jack	J3, J8
2	Output	modular2:banana-jack	J6, J7
2	Power	Connector_IDC:IDC-Header_2x03_P2.54mm_Vertical	J1, J2
1	100	Resistor_THT:R_Axial_DIN0207_L6.3mm_D2.5mm_P10.16mm_Horizontal	R3
1	100K - Effect1	modular2:Potentiometer_Alps_RK09K_Single_Vertical - knob padding	RV6
1	100K - Effect2	modular2:Potentiometer_Alps_RK09K_Single_Vertical - knob padding	RV1
1	100K - Effect3	modular2:Potentiometer_Alps_RK09K_Single_Vertical - knob padding	RV2
1	100K - Effect4	modular2:Potentiometer_Alps_RK09K_Single_Vertical - knob padding	RV3
1	100K - Gain	modular2:Potentiometer_Alps_RK09K_Single_Vertical - knob padding	RV8
1	100K - HPF	modular2:Potentiometer_Alps_RK09K_Single_Vertical - knob padding	RV5
1	100K - Input Scale	modular2:Potentiometer_Alps_RK09K_Single_Vertical - knob padding	RV7
1	100K - LPF	modular2:Potentiometer_Alps_RK09K_Single_Vertical - knob padding	RV4
1	100K - Mix	modular2:Potentiometer_Alps_RK09K_Single_Vertical - knob padding	RV9
1	10K	Resistor_THT:R_Axial_DIN0207_L6.3mm_D2.5mm_P10.16mm_Horizontal	R5
1	10nf	Capacitor_THT:C_Disc_D4.3mm_W1.9mm_P5.00mm	C2
1	12K	Resistor_THT:R_Axial_DIN0207_L6.3mm_D2.5mm_P10.16mm_Horizontal	R6
1	1M	Resistor_THT:R_Axial_DIN0207_L6.3mm_D2.5mm_P10.16mm_Horizontal	R9
1	47K	Resistor_THT:R_Axial_DIN0207_L6.3mm_D2.5mm_P10.16mm_Horizontal	R2
1	A	modular2:switch1	SW1
1	Arduino_Nano_v3.x	modular2:Arduino_Nano_sockets	A1
1	B	modular2:switch1	SW3
1	C	modular2:switch1	SW2
1	Conn_01x03_Pin	Connector_PinHeader_2.54mm:PinHeader_1x03_P2.54mm_Vertical	J9
1	Conn_01x03_Socket	Connector_PinSocket_2.54mm:PinSocket_1x03_P2.54mm_Vertical	J5
1	TL074	Package_DIP:DIP-14_W7.62mm_Socket	U2
1	~	modular2:mcp4725_breakout	U1

The 47 most common of 59 parts.

Questions

How big is the Arduino delay PCB?

It measures 119.1 × 151.8 mm and has 2 copper layers, 1.6 mm thick.

What parts does the Arduino delay use?

59 parts. 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 Arduino delay KiCad files?

From the gridbugs/modular2 repository on GitHub, at the commit this page was made from: the board is arduino-delay/arduino-delay.kicad_pcb and its schematic arduino-delay/arduino-delay.kicad_sch. PCBKit opens the board in the browser, with nothing to install.

Can I use the Arduino 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).

Category and platform

AVR (ATmega, ATtiny)

Project files

Show this board on your page

A live frame, for any web page

<iframe src="https://pcbkit.io/embed/boards/gridbugs-modular2-arduino-delay" title="Arduino delay in PCBKit" width="100%" height="480" style="border:0;border-radius:12px" allow="fullscreen" loading="lazy"></iframe>

A picture

<img src="https://pcbkit.io/embed/boards/gridbugs-modular2-arduino-delay.jpg" alt="Arduino delay" width="1200" height="900">

A picture that opens the board, for a README

[![Arduino delay](https://pcbkit.io/embed/boards/gridbugs-modular2-arduino-delay.jpg?size=s)](https://pcbkit.io/boards/gridbugs-modular2-arduino-delay)

Source

Repository: gridbugs/modular2
Board file: arduino-delay/arduino-delay.kicad_pcb
Commit: 81bdd24
Licence: MIT

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