HardLabs

Systemboard

adrianhelfer·Autocast·Systemboard/Systemboard.kicad_pcb

Systemboard PCB layout, top view — open source ESP32 board by adrianhelfer

About the Systemboard PCB

Systemboard is an open source ESP32 PCB design by adrianhelfer, published on GitHub. It is a 4-layer board measuring 175 × 135 mm, with 193 components from 59 distinct parts.

Its main chip is the ESP32-WROOM-32E, from the ESP32 family. Other key parts include the INA226, LM358, J104D2C12VDC.15S, LM2596S-5 and LM2596S-3.3. By type, the board carries 76 capacitors, 67 resistors, 18 ICs, 9 inductors, 7 diodes and 5 transistors.

From the project

AirPlay Car Stereo

This is still under construction. Credit to the shairport-sync project.

Main components on the Systemboard

INA226LM358J104D2C12VDC.15SLM2596S-5LM2596S-3.3LM2596S-ADJLTV-817S74HC59574HC14ESP32-WROOM-32ETLV73333PDBVPCM2706CPJTRPCM5102ATPA3118D2DAPR

Systemboard bill of materials (BOM)

193 components, 59 distinct parts — part numbers from the project's BOM.

QtyPartRefs
1
INA226
U1
1
LM358
U2
2
J104D2C12VDC.15S
U3, U4
2
LM2596S-5
U5, U7
1
LM2596S-3.3
U6
1
LM2596S-ADJ
U8
1
LTV-817S
U9
1
74HC595
U10
1
74HC14
U11
1
ESP32-WROOM-32E
U101
3
TLV73333PDBV
U103, U201, U301
1
PCM2706CPJTR
U104
1
PCM5102A
U202
1
TPA3118D2DAPR
U501
5
MMBT5551L
Q1, Q2, Q3, Q4, Q5
1
CSTNE12M0G55A000R0
Y101
1
CONN_01X60
Conn_01x60
J1
1
CONN_01X02
Conn_01x02
J2
2
CONN_01X01
Conn_01x01
J3, J4
1
Prog BT
J108
Show 39 more
QtyPartRefs
1
10K
10k
RV1
2
SS0750301F040P1A
S1, S2
2
Conn_02x02_Odd_Even
Speaker_Front1, Speaker_Rear1
6
SS54
D1, D2, D3, D4, D6, D7
1
6V8
D5
4
10U
10u
L1, L2, L3, L501
4
C5359277
33µ
L4, L5, L6, L8
1
C19947650
3µ
L7
16
100N
100n
C1, C19, C22, C102, C103, C104, C105, C106 +8
5
10N
10n
C2, C14, C15, C16, C17
4
220N
220n
C3, C4, C5, C6
4
680N
680n
C7, C8, C9, C509
6
1n
C10, C11, C12, C13, C20, C21
6
220µ
C25, C27, C29, C32, C34, C35
4
680µ
C26, C28, C31, C33
1
180µ
C30
3
2U2
2u2
C101, C203, C212
11
10U
10u
C107, C108, C113, C201, C202, C206, C210, C211 +3
2
22N
22n
C109, C110
10
1u
C111, C115, C116, C117, C118, C501, C502, C503 +2
2
100U
100u
C112, C114
2
2N2
2n2
C204, C213
1
0R01
R1
5
3R3
R2, R3, R4, R5, R6
9
47
R101, R102, R103, R106, R108, R110, R112, R151 +1
17
10K
10k
R104, R105, R107, R109, R111, R113, R117, R132 +9
4
5K1
5k1
R114, R116, R129, R130
3
1K5
1k5
R115, R120, R139
2
22
R118, R119
2
16
R121, R122
10
3K3
3k3
R123, R124, R125, R126, R134, R135, R136, R145 +2
1
1M
R127
2
330
R128, R131
4
4K7
4k7
R140, R142, R154, R155
1
120
R141
2
470
R201, R202
2
100K
100k
R501, R503
1
20K
20k
R502
1
100K
47k
R504

Systemboard design files

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

Systemboard: common questions

What microcontroller does the Systemboard use?

The Systemboard is built around the ESP32-WROOM-32E, from the ESP32 family.

How big is the Systemboard PCB?

The Systemboard measures 175 × 135 mm, has 4 copper layers and is 1.6 mm thick.

How many components are on the Systemboard?

193 components, from 59 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 Systemboard design files?

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

Can I use the Systemboard design in my own project?

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

Can I test firmware for the Systemboard without the hardware?

Yes. HardLabs builds a simulation of the board from its netlist and BOM, so you can run and debug ESP32 firmware against it before you order a PCB.

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