Core System 2026
About the Core System 2026 PCB
Core System 2026 is an open source ESP32 PCB design by MarsRoverUdeGSpace, published on GitHub under the MIT license. It is a 4-layer board measuring 78 × 53 mm, with 78 components from 40 distinct parts.
Its main chip is the ESP32-S3R8, from the ESP32 family. Other key parts include the TLV1117-33IDCYR, W25Q256JVEIQ, BNO055, NEO-M8N-0 and BMI088. By type, the board carries 32 capacitors, 16 resistors, 7 ICs, 4 connectors, 3 diodes and 3 inductors.
It belongs with the sensors and rf & radio designs in this gallery.
From the project
Core System repository for UdeGSpace - Mars Rover Team
This directory contains the MCU hardware design and tracked fabrication artifacts for the Kukulcan rover controller board.
Current documented board target: Kukulcan Rev A, described as validated RevA integration hardware.
- MCU/: main KiCad project, board file, schematic, local outputs, and board exports - Libraries/: shared symbols, footprints, and 3D models used by the design - mfr/: tracked manufacturing outputs, Gerbers, drills, fab zip, BOM, and CPL
Main components on the Core System 2026
Core System 2026 bill of materials (BOM)
78 components, 40 distinct parts — part numbers from the project's BOM.
| Qty | Part | Footprint | Refs |
|---|---|---|---|
| 1 | TLV1117-33IDCYR TLV1117-33 TI | SOT230P700X180-4N | U1 |
| 1 | W25Q256JVEIQ Winbond | W25Q256JVEIQ | U2 |
| 1 | ESP32-S3R8 ESPRESSIF | ESP32-S3R8 | U3 |
| 1 | BNO055 Bosch | LGA-28_5.2x3.8mm_P0.5mm | U4 |
| 1 | NEO-M8N-0 NEO-M8N U-BLOX | ublox_NEO | U5 |
| 1 | BMI088 Bosch | Bosch_LGA-16_4.5x3mm_P0.5mm_LayoutBorder7x1y_ClockwisePinNumbering | U6 |
| 1 | BME280 Bosch | Bosch_LGA-8_2.5x2.5mm_P0.65mm_ClockwisePinNumbering | U7 |
| 1 | AO3401A AOS | SOT-23 | Q1 |
| 1 | HY40MSMD2520GA1R30 40MHz Huiyuan crystal | Crystal_SMD_2520-4Pin_2.5x2.0mm | X1 |
| 1 | SC-32S32.768kHz20PPM12.5pF 32.768kHz Seiko | Crystal_SMD_3.2x1.5mm | Y1 |
| 2 | XDJK-0051-025 Barrel_Jack_5V_In Lian Xin Technology | BarrelJack_Horizontal | J1, J2 |
| 1 | USB4105-GF-A USB_C_Receptacle Global Connector Technology | USB_C_Receptacle_GCT_USB4105-xx-A_16P_TopMnt_Horizontal | J3 |
| 1 | 132134-10 SMA_GNSS Amphenol | SMA_Amphenol_132134-10_Vertical | J4 |
| 3 | RS-282G05A3-SMRT SW_Push C&K | SW_SPST_CK_RS282G05A3 | Boot1, NxtPg1, Rst1 |
| 1 | SL0805200 6V/2A TECHFUSE | Fuse_0805_2012Metric | F1 |
| 1 | X6521WVS-2x20H-C60D74 Conn_02x20_Odd_Even XKB Connection | PinHeader_2x20_P2.54mm_Vertical_SMD | Jetson1 |
| 1 | B3B-XH-A(LF)(SN) JST XH 01x03 JST | JST_XH_B3B-XH-A_1x03_P2.50mm_Vertical | LEDStrip1 |
| 1 | B4B-XH-A(LF)(SN) JST XH 01x04 JST | JST_XH_B4B-XH-A_1x04_P2.50mm_Vertical | Oled1 |
| 1 | B2B-XH-A(LF)(SN) JST XH 01x02 Ver JST | JST_XH_B2B-XH-A_1x02_P2.50mm_Vertical | RBCs1 |
| 1 | YLED0805W White YONGYUTAI | LED_0805_2012Metric_Pad1.15x1.40mm_HandSolder | LED1 |
Show 20 more
| Qty | Part | Footprint | Refs |
|---|---|---|---|
| 1 | YLED0805R Red YONGYUTAI | LED_0805_2012Metric_Pad1.15x1.40mm_HandSolder | LED2 |
| 1 | ESD9B5.0ST5G onsemi | D_SOD-923 | D1 |
| 1 | PMEG2010ER-QX PMEG2010ER Nexperia | Nexperia_CFP3_SOD-123W | D2 |
| 1 | USBLC6-2SC6 TECH PUBLIC | SOT-23-6 | D3 |
| 1 | VHF160808H2N0ST 2nH FH | L_0603_1608Metric_Pad1.05x0.95mm_HandSolder | L1 |
| 1 | VHF160808H24NJT 24nH FH | L_0603_1608Metric_Pad1.05x0.95mm_HandSolder | L2 |
| 1 | LQW18AN27NG00D 27nH muRata | L_0603_1608Metric_Pad1.05x0.95mm_HandSolder | L3 |
| 16 | CC0603KRX7R9BB104 0.1uF YAGEO | C_0603_1608Metric_Pad1.08x0.95mm_HandSolder | C1, C2, C5, C9, C10, C13, C15, C21 +8 |
| 2 | CL10A105KO8NNNC 1uF Samsung Electro-Mechanics | C_0603_1608Metric_Pad1.08x0.95mm_HandSolder | C3, C6 |
| 4 | CL10A106KP8NNNC 10uF Samsung Electro-Mechanics | C_0603_1608Metric_Pad1.08x0.95mm_HandSolder | C4, C11, C12, C14 |
| 1 | CL10A105KP8NNNC 1uF/10V Samsung Electro-Mechanics | C_0603_1608Metric_Pad1.08x0.95mm_HandSolder | C7 |
| 1 | C0603C103K8RACTU 10nF/10V KEMET | C_0603_1608Metric_Pad1.08x0.95mm_HandSolder | C8 |
| 2 | CC0603FRNPO9BN220 22pF/10V YAGEO | C_0603_1608Metric_Pad1.08x0.95mm_HandSolder | C16, C17 |
| 3 | CC0603KRX7R9BB104 100nF YAGEO | C_0603_1608Metric_Pad1.08x0.95mm_HandSolder | C18, C19, C20 |
| 2 | CC0603FRNPO9BN220 22pF YAGEO | C_0603_1608Metric_Pad1.08x0.95mm_HandSolder | C22, C23 |
| 1 | C0603C103K8RACTU 10nF KEMET | C_0603_1608Metric_Pad1.08x0.95mm_HandSolder | C32 |
| 7 | 0603 ±5% 10K 10k/5% VO | R_0603_1608Metric_Pad0.98x0.95mm_HandSolder | R1, R10, R11, R12, R13, R15, R16 |
| 3 | 0603WAJ0102T5E 1k/5% UNI-ROYAL | R_0603_1608Metric_Pad0.98x0.95mm_HandSolder | R2, R3, R4 |
| 5 | 0603WAF5101T5E 5k1 UNI-ROYAL | R_0603_1608Metric_Pad0.98x0.95mm_HandSolder | R5, R6, R7, R8, R9 |
| 1 | 0603WAF100JT5E 10R/1% UNI-ROYAL | R_0603_1608Metric_Pad0.98x0.95mm_HandSolder | R14 |
Core System 2026 design files
The KiCad project lives in the MarsRoverUdeGSpace/Core_System_2026 repository on GitHub; these links point at the commit this page was built from.
Core System 2026: common questions
What microcontroller does the Core System 2026 use?
The Core System 2026 is built around the ESP32-S3R8, from the ESP32 family.
How big is the Core System 2026 PCB?
The Core System 2026 measures 78 × 53 mm, has 4 copper layers and is 1.8 mm thick.
How many components are on the Core System 2026?
78 components, from 40 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 Core System 2026 design files?
From the MarsRoverUdeGSpace/Core_System_2026 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 Core System 2026 design in my own project?
Yes, under the terms of its MIT license, which MarsRoverUdeGSpace chose for the repository.
Can I test firmware for the Core System 2026 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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