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Quad adsr

JordanAceto·quad_ADSR_board·hardware/main_pcb/kicad_docs/quad_adsr.kicad_pcb

Quad adsr PCB layout, top view — open source STM32 board by JordanAceto
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About the Quad adsr PCB

Quad adsr is an open source STM32 PCB design by JordanAceto, published on GitHub. It is a 2-layer board measuring 71.1 × 99.1 mm, with 197 components from 46 distinct parts.

Its main chip is the STM32F405RGTX, from the STM32 family. Other key parts include the HDSP-7503, 74HC595, AMS1117-3.3, TL072 and MCP4822. By type, the board carries 86 resistors, 53 capacitors, 14 connectors, 13 ICs, 13 diodes and 12 transistors.

It belongs with the audio designs in this gallery.

From the project

PCB for a quad eurorack ADSR

Quad adsr, from the project README
From the project README

Main components on the Quad adsr

HDSP-750374HC595AMS1117-3.3TL072MCP4822STM32F405RGTX24LC32

Quad adsr bill of materials (BOM)

197 components, 46 distinct parts — part numbers from the project's BOM.

QtyPartRefs
4
HDSP-7503
U1, U3, U4, U5
2
74HC595
U2, U6
1
AMS1117-3.3
U7
2
TL072
U8, U11
2
MCP4822
U9, U10
1
STM32F405RGTX
STM32F405RGTx
U12
1
24LC32
U13
12
MMBT3904
Q1, Q2, Q3, Q4, Q5, Q6, Q7, Q8 +4
4
PJ301M-12
J1, J2, J3, J4
1
power_in
J5
1
gate_1_i n
J6
1
trigger_1_in
J7
1
gate_2_in
J8
1
trigger_2_in
J9
1
gate_3_in
J10
1
trigger_3_in
J11
1
gate_4_in
J12
1
trigger_4_in
J13
1
SWD_header
J14
4
Rotary_Encoder_Switch
ENC1, ENC2, ENC3, ENC4
Show 26 more
QtyPartRefs
1
16MHZ
16MHz
HSE1
4
LED_Dual_ACA
D1, D2, D3, D4
1
LED
D5
8
1N4148W
D6, D7, D8, D9, D10, D11, D12, D13
1
C1015
Ferrite_Bead_Small
FB1
8
10NF
10nF
C1, C2, C4, C5, C7, C8, C10, C11
24
100NF
100nF
C3, C6, C9, C12, C16, C17, C18, C19 +16
3
10UF
10uF
C13, C51, C52
2
10UF
10uF
C14, C15
4
100NF
100nF
C33, C34, C35, C36
8
2N2
2n2
C37, C38, C39, C40, C41, C42, C43, C44
2
2.2UF
2.2uF
C45, C46
2
12PF
12pF
C47, C48
18
10K
10k
R1, R2, R3, R4, R7, R8, R9, R10 +10
4
4K7
4k7
R5, R11, R17, R23
5
100
R6, R12, R18, R24, R84
12
10K
10k
R25, R34, R35, R36, R50, R52, R54, R56 +4
16
390
R26, R27, R28, R29, R30, R31, R32, R33 +8
4
1k
R45, R46, R47, R48
8
100K
100k
R49, R51, R53, R55, R57, R59, R61, R63
4
50K
50k
R65, R66, R73, R74
4
200K
200k
R67, R68, R75, R76
4
33K
33k
R69, R70, R77, R78
4
68K
68k
R71, R72, R79, R80
1
2K2
2k2
R81
2
4K7
4k7
R85, R86

Quad adsr design files

The KiCad project lives in the JordanAceto/quad_ADSR_board repository on GitHub; these links point at the commit this page was built from.

Quad adsr: common questions

What microcontroller does the Quad adsr use?

The Quad adsr is built around the STM32F405RGTX, from the STM32 family.

How big is the Quad adsr PCB?

The Quad adsr measures 71.1 × 99.1 mm, has 2 copper layers and is 1.6 mm thick.

How many components are on the Quad adsr?

197 components, from 46 distinct parts, with part numbers taken from the project's own BOM. The full bill of materials is listed on this page.

Where can I download the Quad adsr design files?

From the JordanAceto/quad_ADSR_board repository on GitHub, which has the KiCad layout and the BOM; the links under Design files point to each one.

Can I use the Quad adsr design in my own project?

The repository has no license, so all rights stay with JordanAceto. Use it as a reference, and ask the author before reusing the design.

Can I test firmware for the Quad adsr without the hardware?

Yes. HardLabs builds a simulation of the board from its netlist and BOM, so you can run and debug STM32 firmware against it before you order a PCB.

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