4 layers80 × 50 mm F411 shimmer, the printed circuit board in 3D

F411 shimmer

STM32 based MIDI foot controller for controlling digital guitar effects.

Size: 80 × 50 mm
Copper layers: 4
Thickness: 1.6 mm
Parts: 70
Nets: 66
Pads: 216
Tracks, vias: 362, 152
Pours: 6
Routed: Yes
KiCad: KiCad 9.0 (file 20241229)
Created: 13 Mar 2026
Updated: 11 Apr 2026

Overview

F411 shimmer is an open-source printed circuit board by mattallenn, from the mattallenn/STM32-MIDI-Controller repository on GitHub. It is a 4-layer board of 80 × 50 mm with 70 parts on 66 nets, routed with 362 tracks and 152 vias.

It is built around the AMS1117-3.3. Its parts include 20 capacitors, 15 connectors, 9 resistors, 4 diodes and 2 ICs. It belongs with the audio and music boards and the STM32 boards of this library.

Main components

AMS1117-3.3
SOT-223-40℃~+125℃ 0.003%Vout 1 1.1V@(800mA) 15V 1A 3.3V 5mA 72dB@(120Hz) Fixed Over Current Protection、Short Circuit Protection、Thermal shutdown Positive SOT-223 Voltage Regulators - Linear, Low Drop Out (LDO) Regulators ROHSAdvanced Monolithic SystemsVoltage Regulators - Linear, Low Drop Out (LDO) Regulators

README

README.md

STM32 MIDI Controller - STOMPR

For the full writeup, please check out my website:

https://mattallen.page/stompr.html

PCB Front Render

Parts

Qty	Value	Footprint	References
12	TestPoint	TestPoint:TestPoint_Pad_D1.0mm	TP1, TP2, TP3, TP4, TP5, TP6, TP7, TP8, TP9, TP10, TP11, TP12
6	100n	Capacitor_SMD:C_0603_1608Metric	C1, C15, C16, C17, C18, C22
5	0.1uf	Capacitor_SMD:C_0603_1608Metric	C2, C3, C4, C5, C6
4	10k	Resistor_SMD:R_0805_2012Metric	R1, R2, R4, R5
4	MountingHole_Pad	MountingHole:MountingHole_3.2mm_M3_Pad_TopBottom	H1, H2, H3, H4
3	330	Resistor_SMD:R_0805_2012Metric	R7, R8, R9
3	LED	LED_SMD:LED_0603_1608Metric	D2, D3, D4
2	10p	Capacitor_SMD:C_0603_1608Metric	C23, C24
2	1u	Capacitor_SMD:C_0603_1608Metric	C20, C21
2	22u	Capacitor_SMD:C_0805_2012Metric	C12, C13
2	Conn_01x04_Pin	Connector_PinHeader_2.54mm:PinHeader_1x04_P2.54mm_Vertical	J13, J14
2	LOGO	LOGO	G*, G*
2	Switch 4	Connector_JST:JST_EH_B2B-EH-A_1x02_P2.50mm_Vertical	J12, J15
1	10k	Resistor_SMD:R_0603_1608Metric	R6
1	10n	Capacitor_SMD:C_0603_1608Metric	C19
1	10u	Capacitor_SMD:C_0603_1608Metric	C14
1	120R	Inductor_SMD:L_0603_1608Metric	FB2
1	16MHz	Crystal:Crystal_SMD_3225-4Pin_3.2x2.5mm	Y2
1	1k5	Resistor_SMD:R_0603_1608Metric	R3
1	4.7uF	Capacitor_SMD:C_0603_1608Metric	C7
1	AMS1117-3.3	Package_TO_SOT_SMD:SOT-223-3_TabPin2	U2
1	Expression Pedal Pot Conn	Connector_JST:JST_EH_B3B-EH-A_1x03_P2.50mm_Vertical	J8
1	Potentiometer 1 Conn	Connector_JST:JST_EH_B3B-EH-A_1x03_P2.50mm_Vertical	J1
1	Potentiometer 2 Conn	Connector_JST:JST_EH_B3B-EH-A_1x03_P2.50mm_Vertical	J3
1	Potentiometer 3 Conn	Connector_JST:JST_EH_B3B-EH-A_1x03_P2.50mm_Vertical	J2
1	Potentiometer 4 Conn	Connector_JST:JST_EH_B3B-EH-A_1x03_P2.50mm_Vertical	J4
1	RED	LED_SMD:LED_0603_1608Metric	D1
1	STM32F411RETx	Package_QFP:LQFP-64_10x10mm_P0.5mm	U1
1	SWD Header	Connector_PinHeader_2.54mm:PinHeader_1x04_P2.54mm_Vertical	J6
1	Switch 1	Connector_JST:JST_EH_B2B-EH-A_1x02_P2.50mm_Vertical	J9
1	Switch 2	Connector_JST:JST_EH_B2B-EH-A_1x02_P2.50mm_Vertical	J10
1	Switch 3	Connector_JST:JST_EH_B2B-EH-A_1x02_P2.50mm_Vertical	J11
1	USART	Connector_PinHeader_2.54mm:PinHeader_1x04_P2.54mm_Vertical	J5
1	USB_B_Micro	Connector_USB:USB_Micro-B_Wuerth_629105150521	J7

Questions

How big is the F411 shimmer PCB?

It measures 80 × 50 mm and has 4 copper layers, 1.6 mm thick.

What parts does the F411 shimmer use?

70 parts, built around the AMS1117-3.3. 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 F411 shimmer KiCad files?

From the mattallenn/STM32-MIDI-Controller repository on GitHub, at the commit this page was made from: the board is PCB/f411_shimmer/f411_shimmer.kicad_pcb and its schematic PCB/f411_shimmer/connectors.kicad_sch. PCBKit opens the board in the browser, with nothing to install.

Can I use the F411 shimmer design in my own project?

Its repository states no licence, so its author keeps all rights: ask mattallenn before reusing the design.

Category and platform

Audio and music STM32

Project files

Show this board on your page

A live frame, for any web page

<iframe src="https://pcbkit.io/embed/boards/mattallenn-stm32-midi-controller" title="F411 shimmer 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/mattallenn-stm32-midi-controller.jpg" alt="F411 shimmer" width="1200" height="900">

A picture that opens the board, for a README

[![F411 shimmer](https://pcbkit.io/embed/boards/mattallenn-stm32-midi-controller.jpg?size=s)](https://pcbkit.io/boards/mattallenn-stm32-midi-controller)

Source

Repository: mattallenn/STM32-MIDI-Controller
Board file: PCB/f411_shimmer/f411_shimmer.kicad_pcb
Commit: 4bda82f
Licence: Not stated

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