2 layers106.9 × 68.6 mm
2 layers54 × 83.5 mm
DualBoost
RolandMueller1994/DualBoostThis project implements a dual boost guitar effect with MIDI capability based on a state variable filter. MIDI is implemented using a STM32 F030C8T6 microcontroller.
- Size
- 54 × 83.5 mm
- Copper layers
- 2
- Thickness
- 1.6 mm
- Parts
- 109
- Nets
- 121
- Pads
- 360
- Tracks, vias
- 1,032, 123
- Pours
- 3
- Routed
- Yes
- KiCad
- KiCad 9.0 (file 20241229)
- Created
- 21 Dec 2025
- Updated
- 15 Mar 2026
Overview
DualBoost is an open-source printed circuit board by RolandMueller1994, from the RolandMueller1994/DualBoost repository on GitHub. It is a 2-layer board of 54 × 83.5 mm with 109 parts on 121 nets, routed with 1,032 tracks and 123 vias.
It is built around the TL072, 74HC14 and H11L1. Its parts include 51 resistors, 21 capacitors, 9 connectors, 7 ICs and 6 diodes. It belongs with the STM32 boards of this library.
Main components
3
TL072
SOP-8-18V~18V 0℃~+70℃ 1.4mA 1.5nA 10V/us 10mV 2 2.5nA 3MHz 85dB SOP-8 Operational Amplifier ROHSGcoreOperational Amplifier
74HC14
SOP-14-40℃~+85℃ 1.9V、3.98V、4.4V、5.48V、5.9V 100mV、260mV、260mV 20uA 25ns@4.5V,50pF 2V~6V 6 74HC Noise suppression function Schmitt trigger SOP-14 Inverters ROHSJSMSEMIInverters
H11L1
DIP-6-55℃~+100℃ 1 1.6mA 1Mbit/s 250mW 3V~15V 5kV DC DIP-6 Logic Output Optoisolators ROHSEverlight ElectronicsLogic Output Optoisolators
README
README.mdDualBoost
Introduction
This project implements a dual boost guitar effect with MIDI capability based on a state variable filter. MIDI is implemented using a STM32 F030C8T6 microcontroller.
Parts
109| Qty | Value | Footprint | References |
|---|---|---|---|
| 12 | 10k | Resistor_SMD:R_0805_2012Metric_Pad1.20x1.40mm_HandSolder | R7, R8, R21, R26, R28, R30, R34, R39, R40, R43, R51, R52 |
| 11 | 100n | Capacitor_SMD:C_1206_3216Metric_Pad1.33x1.80mm_HandSolder | C1, C2, C5, C7, C8, C9, C14, C15, C17, C22, C23 |
| 5 | 100k | Resistor_SMD:R_0805_2012Metric_Pad1.20x1.40mm_HandSolder | R2, R4, R11, R29, R31 |
| 5 | 10kB | PCBLib:RV16AF_Mono | R_Cut1, R_Mid1, R_Q1, R_Volume1, R_Volume2 |
| 5 | 4k7 | Resistor_SMD:R_0805_2012Metric_Pad1.20x1.40mm_HandSolder | R12, R14, R18, R19, R22 |
| 4 | 2M2 | Resistor_SMD:R_0805_2012Metric_Pad1.20x1.40mm_HandSolder | R9, R10, R44, R45 |
| 4 | 2N7002 | Package_TO_SOT_SMD:SOT-23 | Q1, Q2, Q3, Q4 |
| 3 | 1k8 | Resistor_SMD:R_0805_2012Metric_Pad1.20x1.40mm_HandSolder | R17, R24, R46 |
| 3 | 220 | Resistor_SMD:R_0805_2012Metric_Pad1.20x1.40mm_HandSolder | R1, R13, R20 |
| 3 | 3k3 | Resistor_SMD:R_0805_2012Metric_Pad1.20x1.40mm_HandSolder | R5, R32, R49 |
| 3 | Conn_01x02 | Connector_JST:JST_PH_B2B-PH-K_1x02_P2.00mm_Vertical | J2, J5, J8 |
| 2 | 16p | Capacitor_SMD:C_1206_3216Metric_Pad1.33x1.80mm_HandSolder | C24, C25 |
| 2 | 180 | Resistor_SMD:R_0805_2012Metric_Pad1.20x1.40mm_HandSolder | R3, R35 |
| 2 | 18k | Resistor_SMD:R_0805_2012Metric_Pad1.20x1.40mm_HandSolder | R23, R38 |
| 2 | 1N4148 | Diode_THT:D_DO-35_SOD27_P7.62mm_Horizontal | D4, D5 |
| 2 | 2.2n | Capacitor_SMD:C_1206_3216Metric_Pad1.33x1.80mm_HandSolder | C10, C12 |
| 2 | 22k | Resistor_SMD:R_0805_2012Metric_Pad1.20x1.40mm_HandSolder | R41, R53 |
| 2 | 2u2 | Capacitor_SMD:C_1206_3216Metric_Pad1.33x1.80mm_HandSolder | C13, C19 |
| 2 | 3k9 | Resistor_SMD:R_0805_2012Metric_Pad1.20x1.40mm_HandSolder | R25, R47 |
| 2 | 56 | Resistor_SMD:R_0805_2012Metric_Pad1.20x1.40mm_HandSolder | R42, R50 |
| 2 | AudioJack2_Switch | Components:NMJ4HCD2 | J3, J4 |
| 2 | G6K-2 | Relay_SMD:Relay_DPDT_Omron_G6K-2F | K1, K2 |
| 2 | LED | LED_THT:LED_D3.0mm | D3, D6 |
| 2 | TL074 | Package_SO:SOIC-14_3.9x8.7mm_P1.27mm | U2, U3 |
| 1 | 10 | Resistor_SMD:R_0805_2012Metric_Pad1.20x1.40mm_HandSolder | R36 |
| 1 | 100kB | PCBLib:RV16A0_Stereo | R_Freq1 |
| 1 | 1N4001 | Diode_THT:D_DO-41_SOD81_P7.62mm_Horizontal | D1 |
| 1 | 1N914 | Diode_THT:D_DO-35_SOD27_P7.62mm_Horizontal | D2 |
| 1 | 1k5 | Resistor_SMD:R_0805_2012Metric_Pad1.20x1.40mm_HandSolder | R15 |
| 1 | 1u | Capacitor_SMD:C_1206_3216Metric_Pad1.33x1.80mm_HandSolder | C4 |
| 1 | 220n | Capacitor_SMD:C_1206_3216Metric_Pad1.33x1.80mm_HandSolder | C18 |
| 1 | 280 | Resistor_SMD:R_0805_2012Metric_Pad1.20x1.40mm_HandSolder | R6 |
| 1 | 33 | Resistor_SMD:R_0805_2012Metric_Pad1.20x1.40mm_HandSolder | R37 |
| 1 | 330 | Resistor_SMD:R_0805_2012Metric_Pad1.20x1.40mm_HandSolder | R16 |
| 1 | 390 | Resistor_SMD:R_0805_2012Metric_Pad1.20x1.40mm_HandSolder | R33 |
| 1 | 47u | Capacitor_SMD:CP_Elec_6.3x5.8 | C3 |
| 1 | 4u7 | Capacitor_SMD:C_1206_3216Metric_Pad1.33x1.80mm_HandSolder | C6 |
| 1 | 74HC14 | Package_SO:SO-14_3.9x8.65mm_P1.27mm | U5 |
| 1 | 8MHz | Crystal:Crystal_SMD_HC49-SD | Y1 |
| 1 | Barrel_Jack_Switch | Connector_BarrelJack:BarrelJack_GCT_DCJ200-10-A_Horizontal | J1 |
| 1 | Conn_01x03 | Connector_JST:JST_PH_B3B-PH-K_1x03_P2.00mm_Vertical | J9 |
| 1 | Conn_01x05 | Connector_PinHeader_2.54mm:PinHeader_1x05_P2.54mm_Vertical | J6 |
| 1 | Conn_02x07_Odd_Even | Components:FTSH-107-XX-YYY-DV-K-A | J10 |
| 1 | H11L1 | Components:H11L1SM | U6 |
| 1 | L78L33_SOT89 | Package_TO_SOT_SMD:SOT-89-3 | U4 |
| 1 | STM32F030C8Tx | Package_QFP:LQFP-48_7x7mm_P0.5mm | U1 |
| 1 | SW_Push | Button_Switch_SMD:SW_SPST_Omron_B3FS-100xP | SW2 |
| 1 | TL072 | Package_SO:SOIC-8_3.9x4.9mm_P1.27mm | U7 |
| 1 | TestPoint | TestPoint:TestPoint_Pad_D2.0mm | TP_MCO1 |
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Questions
How big is the DualBoost PCB?
It measures 54 × 83.5 mm and has 2 copper layers, 1.6 mm thick.
What parts does the DualBoost use?
109 parts, built around the TL072, 74HC14 and H11L1. 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 DualBoost KiCad files?
From the RolandMueller1994/DualBoost repository on GitHub, at the commit this page was made from: the board is PCB/DualBoost/DualBoost.kicad_pcb and its schematic PCB/DualBoost/Analog.kicad_sch. PCBKit opens the board in the browser, with nothing to install.
Can I use the DualBoost design in my own project?
Its repository states no licence, so its author keeps all rights: ask RolandMueller1994 before reusing the design.