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Clean room slave

trieuhuyduc·Clean_room_slave·Clean_room/Clean_room.kicad_pcb

Clean room slave PCB layout, top view — open source ESP32 board by trieuhuyduc
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About the Clean room slave PCB

Clean room slave is an open source ESP32 PCB design by trieuhuyduc, published on GitHub. It is a 2-layer board measuring 165 × 110 mm, with 207 components from 125 distinct parts.

Its main chip is the ESP32-WROOM-32, from the ESP32 family. Other key parts include the RTC_DS3231M, XL1509, AMS1117, LM317_SOT-223 and MOC3021. By type, the board carries 74 resistors, 42 capacitors, 16 transistors, 14 ICs, 11 connectors and 10 diodes.

From the project

ESP32-based slave controller board for cleanroom equipment — RS485/Modbus, isolated I/O, 220V mains control (KiCad)

An ESP32-WROOM-32 based slave controller board for cleanroom equipment, designed in KiCad with RS485/Modbus industrial communication, digitally isolated I/O, and a 220 V mains control stage. Designed by Triệu Huy Đức.

Status: design complete, pre-production review in progress — not yet released to fabrication. See Project Status below; this is deliberate, not an oversight — the review that caught the remaining issues is part of what this repo documents.

Main components on the Clean room slave

RTC_DS3231MXL1509AMS1117LM317_SOT-223ESP32-WROOM-32MOC3021EL357ISO7721DRB0505S/B1205SMAX485E

Clean room slave bill of materials (BOM)

207 components, 125 distinct parts — part numbers from the project's BOM.

QtyPartRefs
1
RTC_DS3231M
IC1
1
XL1509
U1
1
AMS1117
U2
1
LM317_SOT-223
U3
1
ESP32-WROOM-32
U4
1
MOC3021
U5
2
EL357
U6, U10
1
ISO7721DR
B0505S/B1205S
U7
1
EL357
ISO7721DR
U8
1
ISO7721DR
U9
1
B0505S/B1205S
EL357
U11
2
MAX485E
U12, U13
11
SI2302
Q1, Q2, Q3, Q4, Q5, Q6, Q7, Q8 +3
1
NPN
Q12
4
SI2301
si2301
Q13, Q14, Q15, Q16
1
~
J1
1
CONN_01X10
Conn_01x10
J2
1
FAN
J3
1
MICRO_SD_CARD_DET1
FAN
J4
1
CONN_01X07_PIN
Conn_01x04
J5
Show 105 more
QtyPartRefs
1
CHENH_AP
J6
2
CONN_01X04
Conn_01x04
J7, J8
1
Conn_01x04
J9
1
CONN_01X04
Micro_SD_Card_Det1
J10
1
CONN_01X04
Conn_01x07_Pin
J11
1
Battery_Cell
BT1
1
Buzzer
BZ1
1
2A
F1
1
Fuse
F2
4
Polyfuse
F3, F4, F5, F6
1
20MH
20mH
FL1
1
SOLDERJUMPER_3_BRIDGED12
SolderJumper_3_Bridged12
JP1
1
HLK-10M12
PS1
4
G5NB
RL1, RL2, RL3, RL4
5
10D561
RV1, RV2, RV3, RV4, RV5
2
SW_Push
SW1, SW2
6
D_TVS
TVS1, TVS2, TVS3, TVS4, TVS5, TVS6
9
Led
LE1, LE2, LE3, LE4, LE5, LE6, LE7, LE8 +1
1
SS34
ss34
D1
5
1N4148WS
D2, D3, D4, D5, D6
1
MB10F
D7
1
BTA16-6000B
D8
1
1N4148
D9
1
BAT54C
D10
1
68UH
68uH
L1
2
LED_Housing_Dual
L2, L3
3
100NF
10uF
C1, C8, C32
2
471/2K
100nF
C2, C3
1
10UF
471/2k
C4
1
0.1UF/275VAC
471/2k
C5
2
10UF
10uF
C6, C30
1
0.1UF/275VAC
0.1uF/275VAC
C7
1
220UF
0.1uF/275VAC
C9
1
100NF/0805
100nF
C10
1
470UF
220uf
C11
1
10UF/0805
100nf/0805
C12
1
100NF/0805
470uF
C13
2
100NF
10uf/0805
C14, C37
1
100NF
100nf/0805
C15
1
1UF
100nf
C16
5
100NF
100nF
C17, C20, C36, C38, C41
1
100NF
1uf
C18
1
10UF
100nF
C19
1
1UF
10uf
C21
1
22UF
100nF
C22
1
22UF
1uf
C23
2
22UF
22uf
C24, C25
1
10NF
22uf
C26
1
47NF/275
22uf
C27
1
10UF
10nf
C28
1
10NF/275V
47nF/275
C29
1
10UF
10nF/275V
C31
4
100nF
C33, C35, C39, C40
1
100NF
4.7uF
C34
1
4.7UF
1uF
C42
1
1.5K
1.5k
R1
2
10K
10k
R2, R3
1
6.8K
6.8k
R4
1
220
R5
1
4.7K
10k
R6
1
4.7k
R7
1
330
R8
1
4.7K
330
R9
1
4.7K
1k
R10
3
100
10k
R11, R35, R49
2
10K
4.7k
R12, R13
3
4.7K
100
R14, R53, R54
3
30K
10k
R15, R16, R25
1
100
4.7K
R17
4
100
30k
R18, R19, R28, R29
2
100
R20, R30
5
10K
100
R21, R22, R31, R32, R51
2
470
100
R23, R33
2
470
10k
R24, R34
1
30K
470
R26
3
100
470
R27, R61, R64
1
10K
470
R36
1
220
470
R37
1
180K
100
R38
1
180K
10K
R39
1
330/1W
180
R40
1
470/1W
180k
R41
1
22K
180k
R42
1
330/1W
R43
1
56/1W
470/1W
R44
1
22k
R45
3
1k
R46, R73, R74
1
10K
56/1W
R47
1
100
47k
R48
1
10k
R50
1
100
R52
1
120
10k
R55
1
10K
2k
R56
2
10K
680
R57, R58
1
100K
47k
R59
1
47k
R60
1
100K
470
R62
1
470
R63
1
120
R65
1
10K
120
R66
2
4.7K
100k
R67, R68
1
120
1k
R69
1
100K
1k
R70
1
100k
R71
1
100K
100k
R72

Clean room slave design files

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

Clean room slave: common questions

What microcontroller does the Clean room slave use?

The Clean room slave is built around the ESP32-WROOM-32, from the ESP32 family.

How big is the Clean room slave PCB?

The Clean room slave measures 165 × 110 mm, has 2 copper layers and is 1.6 mm thick.

How many components are on the Clean room slave?

207 components, from 125 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 Clean room slave design files?

From the trieuhuyduc/Clean_room_slave 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 Clean room slave design in my own project?

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

Can I test firmware for the Clean room slave 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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