4 layers58 × 102 mm
4 layers110 × 227 mm
Graphite S3
t1297131-design/Graphite-S3- Size
- 110 × 227 mm
- Copper layers
- 4
- Thickness
- 1.6 mm
- Parts
- 192
- Nets
- 131
- Pads
- 665
- Tracks, vias
- 1,442, 157
- Routed
- Yes
- KiCad
- KiCad 10.0 (file 20260206)
- Created
- 12 Sep 2026
- Updated
- 12 Sep 2026
Overview
Graphite S3 is an open-source printed circuit board by t1297131-design, from the t1297131-design/Graphite-S3 repository on GitHub. It is a 4-layer board of 110 × 227 mm with 192 parts on 131 nets, routed with 1,442 tracks and 157 vias.
It is built around the ESP32-S3-WROOM-1-N16R8, BQ24074RGTR and 1N4148WS, with the M2.5 among its other parts. Its parts include 57 diodes, 44 switches, 30 resistors, 14 capacitors and 6 connectors. It belongs with the ESP32 boards of this library.
Main components
4
ESP32-S3-WROOM-1-N16R8
SMD,25.5x18mm-103.5dBm -40℃~+65℃ 2.4GHz 20.5dBm 355mA 3V~3.6V 95mA ESP32-S3R8 On-board PCB Antenna UART、SPI、I2C、GPIO、I2S、USB SMD,25.5x18mm WiFi Modules ROHSEspressif SystemsWiFi Modules
BQ24074RGTR
QFN-16-EP(3x3)-40℃~+125℃ 1 1.5A 4.2V 4.35V~10.2V 6.5uA Charging IC Lithium Battery Not supported Support QFN-16-EP(3x3) Battery Management ROHSTexas InstrumentsBattery Management
1N4148WS
SOD-3231.25V@150mA 100V 150mA 1uA@75V 200mW 2A 4ns Independent SOD-323 Switching Diodes ROHSJiangsu Changjing Electronics Technology (CJ)Switching DiodesM2.5
-0.45mm 2.5mm 2mm 5mm DIN934 Hex M2.5X0.45 Nickel plated Silver white - Hexagonal nutsShuntianHex Nut
Parts
192| Qty | Value | Footprint | References |
|---|---|---|---|
| 56 | 1N4148WS | Graphite:D_SOD-323 | D11, D12, D13, D14, D15, D16, D17, D18, D19, D20, D21, D22, D23, D24, D25, D26 +40 |
| 8 | M2.5 | Graphite:MountingHole_2.7mm_M2.5 | H1, H2, H3, H4, H5, H6, H7, H8 |
| 6 | 100k | Graphite:R_0603_1608Metric | R13, R14, R15, R17, R29, R30 |
| 6 | 10uF | Graphite:C_0805_2012Metric | C5, C6, C7, C8, C9, C13 |
| 5 | 47k | Graphite:R_0603_1608Metric | R20, R21, R22, R23, R24 |
| 4 | 100nF | Graphite:C_0805_2012Metric | C2, C10, C11, C14 |
| 4 | 10k | Graphite:R_0603_1608Metric | R1, R2, R18, R27 |
| 4 | 2.2k | Graphite:R_0603_1608Metric | R10, R11, R25, R26 |
| 4 | M2.5_DISPLAY | Graphite:MountingHole_2.7mm_M2.5 | H9, H10, H11, H12 |
| 2 | 22R | Graphite:R_0402_1005Metric | R5, R6 |
| 2 | 22uF | Graphite:C_0805_2012Metric | C1, C12 |
| 2 | 33R | Graphite:R_0603_1608Metric | R16, R19 |
| 2 | 5.1k | Graphite:R_0603_1608Metric | R3, R4 |
| 1 | ( | Graphite:SW_PUSH_6mm_H4.3mm | SW16 |
| 1 | (-) | Graphite:SW_PUSH_6mm_H4.3mm | SW46 |
| 1 | ) | Graphite:SW_PUSH_6mm_H4.3mm | SW17 |
| 1 | * | Graphite:SW_PUSH_6mm_H4.3mm | SW30 |
| 1 | + | Graphite:SW_PUSH_6mm_H4.3mm | SW42 |
| 1 | +3V3 | Graphite:TestPoint_Pad_D1.5mm | TP2 |
| 1 | , | Graphite:SW_PUSH_6mm_H4.3mm | SW35 |
| 1 | - | Graphite:SW_PUSH_6mm_H4.3mm | SW36 |
| 1 | . | Graphite:SW_PUSH_6mm_H4.3mm | SW45 |
| 1 | / | Graphite:SW_PUSH_6mm_H4.3mm | SW24 |
| 1 | 0 | Graphite:SW_PUSH_6mm_H4.3mm | SW44 |
| 1 | 0R | Graphite:R_0603_1608Metric | R31 |
| 1 | 1 | Graphite:SW_PUSH_6mm_H4.3mm | SW38 |
| 1 | 100R | Graphite:R_0603_1608Metric | R12 |
| 1 | 1uF | Graphite:C_0805_2012Metric | C3 |
| 1 | 2 | Graphite:SW_PUSH_6mm_H4.3mm | SW39 |
| 1 | 2.2uH | Graphite:L_Coilcraft_XAL4020-XXX | L1 |
| 1 | 3 | Graphite:SW_PUSH_6mm_H4.3mm | SW40 |
| 1 | 3.24k | Graphite:R_0603_1608Metric | R8 |
| 1 | 3.74k | Graphite:R_0603_1608Metric | R7 |
| 1 | 4 | Graphite:SW_PUSH_6mm_H4.3mm | SW32 |
| 1 | 4.7uF | Graphite:C_0805_2012Metric | C4 |
| 1 | 5 | Graphite:SW_PUSH_6mm_H4.3mm | SW33 |
| 1 | 6 | Graphite:SW_PUSH_6mm_H4.3mm | SW34 |
| 1 | 68k | Graphite:R_0603_1608Metric | R9 |
| 1 | 7 | Graphite:SW_PUSH_6mm_H4.3mm | SW26 |
| 1 | 750mA PTC | Graphite:Fuse_1206_3216Metric | F1 |
| 1 | 8 | Graphite:SW_PUSH_6mm_H4.3mm | SW27 |
| 1 | 9 | Graphite:SW_PUSH_6mm_H4.3mm | SW28 |
| 1 | AC | Graphite:SW_PUSH_6mm_H4.3mm | SW12 |
| 1 | ALPHA | Graphite:SW_PUSH_6mm_H4.3mm | SW8 |
| 1 | ANS | Graphite:SW_PUSH_6mm_H4.3mm | SW29 |
| 1 | APPS | Graphite:SW_PUSH_6mm_H4.3mm | SW56 |
| 1 | BATTERY_1S | Graphite:JST_PH_B2B-PH-K_1x02_P2.00mm_Vertical | J2 |
| 1 | BOOT | Graphite:SW_SPST_TL3342 | SW58 |
| 1 | BQ24074RGTR | Graphite:VQFN-16-1EP_3x3mm_P0.5mm_EP1.6x1.6mm | U2 |
| 1 | CHARGE_AMBER | Graphite:LED_0603_1608Metric | D1 |
| 1 | DEL | Graphite:SW_PUSH_6mm_H4.3mm | SW11 |
| 1 | DOWN | Graphite:SW_PUSH_6mm_H4.3mm | SW53 |
| 1 | ENTER | Graphite:SW_PUSH_6mm_H4.3mm | SW48 |
| 1 | ESC | Graphite:SW_PUSH_6mm_H4.3mm | SW54 |
| 1 | ESP32-S3-WROOM-1-N16R8 | Graphite:ESP32-S3-WROOM-1 | U1 |
| 1 | EXP | Graphite:SW_PUSH_6mm_H4.3mm | SW47 |
| 1 | GND | Graphite:TestPoint_Pad_D1.5mm | TP1 |
| 1 | GRAPH | Graphite:SW_PUSH_6mm_H4.3mm | SW5 |
| 1 | HOME | Graphite:SW_PUSH_6mm_H4.3mm | SW55 |
| 1 | I2C_EXPANSION | Graphite:PinHeader_1x04_P2.54mm_Vertical | J6 |
| 1 | LEFT | Graphite:SW_PUSH_6mm_H4.3mm | SW50 |
| 1 | MATH | Graphite:SW_PUSH_6mm_H4.3mm | SW37 |
| 1 | MICROSD | Graphite:microSD_HC_Hirose_DM3D-SF | J5 |
| 1 | MODE | Graphite:SW_PUSH_6mm_H4.3mm | SW10 |
| 1 | OK | Graphite:SW_PUSH_6mm_H4.3mm | SW51 |
| 1 | ON | Graphite:SW_PUSH_6mm_H4.3mm | SW43 |
| 1 | PACK_NTC_10k | Graphite:JST_PH_B2B-PH-K_1x02_P2.00mm_Vertical | J3 |
| 1 | POWER | Graphite:SW_SPDT_CK_JS102011SAQN | SW59 |
| 1 | RESET | Graphite:SW_SPST_TL3342 | SW57 |
| 1 | RIGHT | Graphite:SW_PUSH_6mm_H4.3mm | SW52 |
| 1 | SHIFT | Graphite:SW_PUSH_6mm_H4.3mm | SW7 |
| 1 | STO | Graphite:SW_PUSH_6mm_H4.3mm | SW25 |
| 1 | SYS | Graphite:TestPoint_Pad_D1.5mm | TP3 |
| 1 | TABLE | Graphite:SW_PUSH_6mm_H4.3mm | SW6 |
| 1 | TCA8418RTWR | Graphite:WQFN-24-1EP_4x4mm_P0.5mm_EP2.45x2.45mm | U4 |
| 1 | TFT_8080_ADAFRUIT_2050 | Graphite:PinSocket_1x20_P2.54mm_Vertical | J4 |
| 1 | TPS63001DRCR | Graphite:Texas_DRC0010J | U3 |
| 1 | TRACE | Graphite:SW_PUSH_6mm_H4.3mm | SW4 |
| 1 | UART_DEBUG | Graphite:PinHeader_1x04_P2.54mm_Vertical | J7 |
| 1 | UP | Graphite:SW_PUSH_6mm_H4.3mm | SW49 |
The 172 most common of 192 parts.
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Questions
How big is the Graphite S3 PCB?
It measures 110 × 227 mm and has 4 copper layers, 1.6 mm thick.
What parts does the Graphite S3 use?
192 parts, built around the ESP32-S3-WROOM-1-N16R8, BQ24074RGTR, 1N4148WS and M2.5. The full list of its parts is on this page, with links to each part's symbol and footprint where PCBKit's library has them.
Where can I download the Graphite S3 KiCad files?
From the t1297131-design/Graphite-S3 repository on GitHub, at the commit this page was made from: the board is Graphite-S3.kicad_pcb and its schematic Graphite-S3.kicad_sch. PCBKit opens the board in the browser, with nothing to install.
Can I use the Graphite S3 design in my own project?
Its repository states no licence, so its author keeps all rights: ask t1297131-design before reusing the design.