HardLabs

Schemantic

ashutosh-rath02·schemantic·test_boards/kicad/ESP32-PoE_Rev_J.kicad_pcb

Schemantic PCB layout, top view — open source ESP32 board by ashutosh-rath02

About the Schemantic PCB

Schemantic is an open source ESP32 PCB design by ashutosh-rath02, published on GitHub under the MIT license. It is a 4-layer board measuring 28 × 80 mm, with 129 components from 72 distinct parts.

Its main chip is the ESP32-WROVER-E, from the ESP32 family. Other key parts include the CH340T(SSOP20W), TPS2375PW(TSSOP-8), BL4054B-42TPRN(SOT23-5), LAN8710A-EZC(QFN32) and TX4138(ESOIC-8). By type, the board carries 49 resistors, 28 capacitors, 9 diodes, 8 ICs, 5 inductors and 4 LEDs.

From the project

Multi-agent system that parses Altium/KiCad schematic PDFs into a verified connectivity graph, with AI agents for part ID, datasheet grounding, a grounded chat agent, multi-board linking, and pre-fab design checks.

A multi-agent system that turns a circuit board's schematic PDF into something actually understood -- a live connectivity graph, AI-identified parts with page-cited datasheet facts, a grounded chat agent that reasons over the verified graph, and exports a coding agent can build firmware from. Not a redraw: every wire you see is parsed fact, not a guess.

Live demo: https://schemantic.ashutoshrath.me/

Schemantic, from the project README
From the project README

Main components on the Schemantic

CH340T(SSOP20W)TPS2375PW(TSSOP-8)BL4054B-42TPRN(SOT23-5)LAN8710A-EZC(QFN32)TX4138(ESOIC-8)ESP32-WROVER-ESY8089AAAC(SOT23-5)SN74LVC1G04DBVR(SOT23-5)

Schemantic bill of materials (BOM)

129 components, 72 distinct parts.

QtyPartRefs
1
CH340T(SSOP20W)
U1
1
TPS2375PW(TSSOP-8)
U2
1
BL4054B-42TPRN(SOT23-5)
U3
1
LAN8710A-EZC(QFN32)
U4
1
TX4138(ESOIC-8)
U5
1
ESP32-WROVER-E
U6
1
SY8089AAAC(SOT23-5)
U7
1
SN74LVC1G04DBVR(SOT23-5)
U8
1
Q12MHz/20pF/10ppm/4P/3.2x2.5mm
Q1
2
BC817-40(SOT23)
Q2, Q3
1
DW02S
BAT1
1
Opened
BAT_SENS_E1
2
IT1185AU2
BUT1, RST1
2
NS(HN1x10)
EXT1, EXT2
3
WPM2015-3/TR
FET1, FET2, FET3
1
RJP-003TC1(LPJ4112CNL)
LAN_CON1
3
Mounting_Hole_NPTH
MH1, MH2, MH3
1
TFC-9P-1.7H(ATFFS150A01BR016)
MICRO_SD1
3
RA1206_(4X0603)_4B8_2.2k
RM1, RM2, RM3
1
LMUN2211LT1G(SOT-23)
T1
Show 52 more
QtyPartRefs
1
ESDS314DBVR(SOT-23-5)
TVS1
2
NA(GG0402052R542P)
TVS2, TVS3
1
P-B-V-10-LF
UEXT1
1
MISB-SWMM-5B-LF(USB_MICRO)
USB-UART1
2
LED/YELLOW/0603
ACT1, CHRG1
1
LED/GREEN/0603
LNK1
1
LED/RED/0603
PWR1
2
1N5822/SS34/SMA
D1, D3
1
BAT54C(SOT23-3)
D2
4
1N5819S4(SOD-123)
D4, D6, D7, D9
1
SS510/100V/5A/0.85V/DO214AB(SMC)
D5
1
SMAJ58A/SMA
D8
3
FB0805/600R/2A
L1, L3, L5
1
2.2uH/1.5A/DCR=72mR/20%/3.00x3.00x1.50mm/CD32(NR3015T2R2M)
L2
1
33uH/2.1A/DCR=0.1R/20%/DBS135(PD3316MT330)
L4
6
22uF/6.3V/20%/X5R/C0603
C1, C6, C7, C9, C10, C13
1
1nF/2000V/10%/X7R/C1206
C2
2
47uF/6.3V/20%/X5R/C0805
C3, C22
2
27pF/50V/5%/C0G/C0402
C4, C5
7
100nF/16V/10%/X7R/C0402
C8, C11, C14, C15, C16, C18, C28
2
100nF/100V/10%/X7R/C0603
C12, C24
1
2.2uF/6.3V/10%/X5R/C0603
C17
1
1nF/50V/10%/X7R/C0402
C19
1
1uF/10V/20%/X5R/C0603
C20
1
NA(10uF/6.3V/20%/X5R/C0603)
C21
1
12pF/50V/5%/COG/C0402
C23
1
470uF/10V/20%/Low_ESR/RM2.5/6.0x11mm
C25
1
NA(220pF/100V/C0603)
C26
1
15uF/100V/20%/RM2.5/6.3x11mm(Farnell:1281844)
C27
10
10k/R0402
R1, R2, R18, R19, R25, R32, R36, R37 +2
3
1k/R0402
R3, R20, R21
1
47k/R0402
R4
8
2.2k/R0402
R5, R6, R8, R14, R15, R31, R35, R41
1
24.9k/1%/R0402
R7
1
100k/R0402
R9
4
49.9R/1%/R0402
R10, R11, R12, R13
1
NA(10k/R0402)
R16
2
470k/R0402
R17, R22
1
180k/1%/R0402
R23
3
220R/R0402
R24, R46, R47
1
12.1k/1%/R0402
R26
1
4.42k/1%/1/16W/R0402
R27
1
0.03R/1%/R1206
R28
1
220k/R0402
R29
1
49.9k/1%/R0402
R30
1
4.7R/R0402
R33
1
5.23k/1%/R0402
R34
1
30.1k/1%/R0402
R38
2
10R/R0402
R40, R45
1
4.7k/R2512
R42
1
NA(22R/R0603)
R43
2
NA/R0402
R44, R49

Schemantic design files

The KiCad project lives in the ashutosh-rath02/schemantic repository on GitHub; these links point at the commit this page was built from.

Schemantic: common questions

What microcontroller does the Schemantic use?

The Schemantic is built around the ESP32-WROVER-E, from the ESP32 family.

How big is the Schemantic PCB?

The Schemantic measures 28 × 80 mm, has 4 copper layers and is 1.6 mm thick.

How many components are on the Schemantic?

129 components, from 72 distinct parts. The full bill of materials is listed on this page.

Where can I download the Schemantic design files?

From the ashutosh-rath02/schemantic repository on GitHub, which has the KiCad layout; the links under Design files point to each one.

Can I use the Schemantic design in my own project?

Yes, under the terms of its MIT license, which ashutosh-rath02 chose for the repository.

Can I test firmware for the Schemantic 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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