SSRU v3.3

HKUST-Red-Bird-Racing-EVRT·GEN5_ELEC·SSRU_v3.3/SSRU_v3.3.kicad_pcb

About the SSRU v3.3 PCB

SSRU v3.3 is an open source ESP32 PCB design by HKUST-Red-Bird-Racing-EVRT, published on GitHub. It is a 2-layer board measuring 95 × 78 mm, with 66 components from 40 distinct parts.

Its main chip is the ESP32-S3-WROOM-2, from the ESP32 family. Other key parts include the CH340C, TJA1051T-3, LM2576S-5, LM324 and 74LVC1G17. By type, the board carries 29 capacitors, 16 resistors, 8 ICs, 4 connectors, 3 crystals and 2 diodes.

From the project

Repository for RBR EVRT 2025 EE

Main components on the SSRU v3.3

ESP32-S3-WROOM-2 CH340C TJA1051T-3 LM2576S-5 LM324 74LVC1G17 TJA1051T

SSRU v3.3 bill of materials (BOM)

66 components, 40 distinct parts — part numbers from the project's BOM.

Qty	Part	Footprint	Refs
1	ESP32-S3-WROOM-2 MCP2515-xST	TSSOP-20_4.4x6.5mm_P0.65mm	U1
1	CH340C ATmega328P-A	TQFP-32_7x7mm_P0.8mm_L	U2
1	TJA1051T-3 LM2904	SOIC-8_3.9x4.9mm_P1.27mm_RMC_Handsolder	U3
1	LM2576S-5	TO-263-5_TabPin3_Handsolder	U4
1	LM324 MCP2515-xST	TSSOP-20_4.4x6.5mm_P0.65mm	U6
1	74LVC1G17	SOT-23-5_HandSoldering_Extended_RMC	U8
2	TJA1051T	SOIC-8_3.9x4.9mm_P1.27mm_RMC_Handsolder	U10, U12
1	16MHz	Crystal_HC49-U_Vertical_W_SMD	Y1
2	20MHz	Crystal_HC49-U_Vertical_W_SMD	Y3, Y4
1	USB_C_RECEPTACLE_USB2.0_14P Conn_01x24	HD241_24pin	J2
1	CONN_01X02 AVR-ISP-6	PinHeader_2x03_P2.54mm_Vertical	J4
1	CONN_01X02 Conn_01x03	SolderJumper-3_P1.3mm_Open_Pad1.0x1.5mm	J5
1	Conn_01x04	JST_XH_B4B-XH-A_1x04_P2.50mm_Vertical	J31
1	Fuse	Fuse_1210_3225Metric_Pad1.42x2.65mm_HandSolder	F2
1	Jumper_2_Open	SolderJumper-2_P1.3mm_Open_Pad1.0x1.5mm	JP1
1	SW_Push	SW_PUSH_6mm_H5mm	SW1
1	SMA Diode	D_SMA_Handsoldering	D2
1	LED	LED_0805_2012Metric_Pad1.45x1.40mm_HandSolder	D3
1	330UH 330uH	L_10.4x10.4_H4.8	L1
13	100NF 100nF	C_0805_2012Metric_Pad1.18x1.45mm_HandSolder_L	C1, C3, C4, C6, C12, C23, C24, C28 +5

Show 20 more

Qty	Part	Footprint	Refs
1	10UF 10uF	C_0805_2012Metric_Pad1.18x1.45mm_HandSolder_L	C2
2	100NF 22pF	C_0805_2012Metric_Pad1.18x1.45mm_HandSolder_L	C5, C17
1	100UF 100uF	CP_Radial_D6.3mm_P2.50mm_handsolder	C7
1	330UF 330uF	CP_Radial_D6.3mm_P2.50mm_handsolder	C11
1	100NF 10uF	C_0805_2012Metric_Pad1.18x1.45mm_HandSolder_L	C18
1	100NF optional	C_0805_2012Metric_Pad1.18x1.45mm_HandSolder_L	C19
2	100NF 16pF	C_0805_2012Metric_Pad1.18x1.45mm_HandSolder_L	C26, C27
1	22UF 100nF	C_0805_2012Metric_Pad1.18x1.45mm_HandSolder_L	C32
4	100nF	C_0805_2012Metric_Pad1.18x1.45mm_HandSolder_L	C39, C40, C43, C44
2	16pF	C_0805_2012Metric_Pad1.18x1.45mm_HandSolder_L	C41, C42
1	4K7 1M	R_0805_2012Metric_Pad1.20x1.40mm_HandSolder_L	R1
4	1M	R_0805_2012Metric_Pad1.20x1.40mm_HandSolder_L	R2, R3, R9, R10
1	10K 10M	R_0805_2012Metric_Pad1.20x1.40mm_HandSolder_L	R4
1	10K 4.7k	R_0805_2012Metric_Pad1.20x1.40mm_HandSolder_L	R5
1	120R 1M	R_0805_2012Metric_Pad1.20x1.40mm_HandSolder_L	R6
2	10M	R_0805_2012Metric_Pad1.20x1.40mm_HandSolder_L	R15, R18
2	10k	R_0805_2012Metric_Pad1.20x1.40mm_HandSolder_L	R16, R21
2	120R	R_0805_2012Metric_Pad1.20x1.40mm_HandSolder_L	R17, R22
1	330R	R_0805_2012Metric_Pad1.20x1.40mm_HandSolder_L	R38
1	4K7 4k7	R_0805_2012Metric_Pad1.20x1.40mm_HandSolder_L	R40

SSRU v3.3 design files

The KiCad project lives in the HKUST-Red-Bird-Racing-EVRT/GEN5_ELEC repository on GitHub; these links point at the commit this page was built from.

LayoutSSRU_v3.3/SSRU_v3.3.kicad_pcb
SchematicSSRU_v3.3/SSRU_v3.3.kicad_sch
BOMSensor board V10/sensorboard_v10/bom.csv

SSRU v3.3: common questions

What microcontroller does the SSRU v3.3 use?

The SSRU v3.3 is built around the ESP32-S3-WROOM-2, from the ESP32 family.

How big is the SSRU v3.3 PCB?

The SSRU v3.3 measures 95 × 78 mm, has 2 copper layers and is 1.6 mm thick.

How many components are on the SSRU v3.3?

66 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 SSRU v3.3 design files?

From the HKUST-Red-Bird-Racing-EVRT/GEN5_ELEC 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 SSRU v3.3 design in my own project?

The repository has no license, so all rights stay with HKUST-Red-Bird-Racing-EVRT. Use it as a reference, and ask the author before reusing the design.