HardLabs

Echoplayer

amachronic·echoplayer·r1-rev2/echo-r1-rev2.kicad_pcb

Echoplayer PCB layout, top view — open source STM32 board by amachronic

About the Echoplayer PCB

Echoplayer is an open source STM32 PCB design by amachronic, published on GitHub under the CERN-OHL-S-2.0 license. It is a 6-layer board measuring 52 × 94 mm, with 141 components from 51 distinct parts.

Its main chip is the STM32H7R3Z8Jx, from the STM32 family. Other key parts include the W958D8NBYA5I, TLV320AIC3104, LM66100DCK, TPS62A01DRLR and AP2125K-3.0. By type, the board carries 59 capacitors, 27 resistors, 16 ICs, 14 switches, 9 connectors and 6 diodes.

It belongs with the audio and displays & leds designs in this gallery, and the repository also holds 2 earlier revisions of it.

From the project

Echo - Open Hardware Music Player

Echo is an open hardware platform for music players. The goal of the project is to produce a high quality music player, based on and designed with free software. It's primarily designed to run Rockbox, a free music player firmware with support for many codecs, and a wide array of features.

The PCB is designed with KiCAD 9.0, and there is an unfinished 3D-printable case designed with build123d.

Echoplayer, from the project README
From the project README

Main components on the Echoplayer

STM32H7R3Z8JxW958D8NBYA5ITLV320AIC3104LM66100DCKTPS62A01DRLRAP2125K-3.0TP4057USBLC6-2SC6TPAZ1143-04F

Echoplayer bill of materials (BOM)

141 components, 51 distinct parts.

QtyPartRefs
1
STM32H7R3Z8Jx
U1
1
W958D8NBYA5I
U2
1
TLV320AIC3104
U3
1
LM66100DCK
U4
2
TPS62A01DRLR
U5, U6
2
AP2125K-3.0
U7, U8
1
TP4057
U9
1
USBLC6-2SC6
U10
6
TPAZ1143-04F
U11, U12, U13, U14, U15, U16
5
AO3401A
Q1, Q2, Q3, Q4, Q5
1
SC-32S32.768kHz20PPM12.5pF
Y1
1
XTM32024000JT00351001
Y2
1
TYPE-C-31-M-12
J1
1
TF-115
J2
1
HP_3.5mm
J3
1
LO_3.5mm
J4
1
GT-BTP30003-xxxA-16A
J5
1
AFC07-S30ECA-00
J6
1
Conn_SWDUART
J7
1
BATT
J8
Show 31 more
QtyPartRefs
1
Micro_SD_Card
J9
1
A
SW1
1
B
SW2
1
X
SW3
1
Y
SW4
1
DPAD↑
SW5
1
DPAD↓
SW6
1
DPAD←
SW7
1
DPAD→
SW8
1
START
SW9
1
SELECT
SW10
1
VOL+
SW11
1
VOL-
SW12
1
POWER
SW13
1
HOLD
SW14
4
1N5819WS
D1, D2, D3, D4
2
ESD5Z3.3C
D5, D6
3
2.2 µH
L1, L2, L3
4
10 pF
C1, C2, C3, C4
1
220 pF
C5
23
100 nF
C6, C7, C8, C9, C10, C11, C12, C13 +15
11
1 µF
C29, C30, C31, C32, C33, C34, C35, C36 +3
8
4.7 µF
C40, C41, C42, C43, C44, C45, C46, C47
6
10 µF
C48, C49, C50, C51, C52, C53
2
10 µF/Al
C54, C55
4
22 µF
C56, C57, C58, C59
1
3.9 Ω, 125 mW
R1
3
2.2 kΩ
R2, R3, R4
3
5.1 kΩ
R5, R6, R7
6
15 kΩ
R8, R9, R10, R11, R12, R13
14
68 kΩ
R14, R15, R16, R17, R18, R19, R20, R21 +6

Echoplayer design files

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

Echoplayer: common questions

What microcontroller does the Echoplayer use?

The Echoplayer is built around the STM32H7R3Z8Jx, from the STM32 family.

How big is the Echoplayer PCB?

The Echoplayer measures 52 × 94 mm, has 6 copper layers and is 1.06 mm thick.

How many components are on the Echoplayer?

141 components, from 51 distinct parts. The full bill of materials is listed on this page.

Where can I download the Echoplayer design files?

From the amachronic/echoplayer repository on GitHub, which has the KiCad layout and the schematic; the links under Design files point to each one.

Can I use the Echoplayer design in my own project?

Yes, under the terms of its CERN-OHL-S-2.0 license, which amachronic chose for the repository.

Can I test firmware for the Echoplayer 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.

Earlier revisions in the repo: echo-r1-rev1.1, echo-r1-rev1

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