Front dash unit
About the Front dash unit PCB
Front dash unit is an open source ESP32 PCB design by HKUST-Red-Bird-Racing-EVRT, published on GitHub. It is a 2-layer board measuring 101 × 63 mm, with 56 components from 35 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, 74LVC1G17 and MT3608/SDB628. By type, the board carries 17 capacitors, 15 resistors, 8 connectors, 6 ICs, 3 crystals and 2 diodes.
From the project
Repository for RBR EVRT 2025 EE
Main components on the Front dash unit
Front dash unit bill of materials (BOM)
56 components, 35 distinct parts — part numbers from the project's BOM.
| Qty | Part | Footprint | Refs |
|---|---|---|---|
| 1 | ESP32-S3-WROOM-2 ATmega328-A | TQFP-32_7x7mm_P0.8mm_L | U1 |
| 1 | CH340C TJA1050T_CM_118 | SOIC127P600X175-8N | U2 |
| 1 | TJA1051T-3 MCP2515-xST | TSSOP-20_4.4x6.5mm_P0.65mm | U3 |
| 1 | LM2576S-5 LM2575-5.0BU | TO-263-5_TabPin3 | U4 |
| 1 | 74LVC1G17 TJA1050T_CM_118 | SOIC127P600X175-8N | U8 |
| 1 | MT3608/SDB628 MCP2515-xST | TSSOP-20_4.4x6.5mm_P0.65mm | U9 |
| 1 | HC-12 | MA05-1 | M1 |
| 3 | 20MHz | Crystal_HC49-U_Vertical_W_SMD | Y1, Y2, Y5 |
| 1 | CONN_01X03 Conn_01x04_Socket | JST_XH_B4B-XH-A_1x04_P2.50mm_Vertical | J1 |
| 1 | USB_C_RECEPTACLE_USB2.0_14P Conn_01x04_Socket | JST_XH_B4B-XH-A_1x04_P2.50mm_Vertical | J2 |
| 3 | CONN_01X02 Conn_01x04_Socket | JST_XH_B4B-XH-A_1x04_P2.50mm_Vertical | J3, J4, J8 |
| 1 | CONN_01X02 Conn_01x02_Socket | JST_VH_B2P-VH-B_1x02_P3.96mm_Vertical | J5 |
| 2 | CONN_01X04 Conn_01x04_Socket | JST_XH_B4B-XH-A_1x04_P2.50mm_Vertical | J6, J7 |
| 1 | Conn_02x03_Odd_Even | PinHeader_2x03_P2.54mm_Vertical | AVR-ISP1 |
| 1 | Fuse | Fuse_1210_3225Metric_Pad1.42x2.65mm_HandSolder | F1 |
| 1 | SW_Push | SW_SPST_CK_RS282G05A3 | SW1 |
| 1 | LED | LED_0805_2012Metric_Pad1.15x1.40mm_HandSolder | D1 |
| 1 | 1N5819 | D_SMA_Handsoldering | D2 |
| 1 | 330UH 330uH | L_10.4x10.4_H4.8 | L1 |
| 1 | 10UF 100nF | C_0805_2012Metric_Pad1.18x1.45mm_HandSolder_L | C2 |
Show 15 more
| Qty | Part | Footprint | Refs |
|---|---|---|---|
| 6 | 100NF 100nF | C_0805_2012Metric_Pad1.18x1.45mm_HandSolder_L | C3, C8, C14, C16, C22, C23 |
| 5 | 100NF 22pF | C_0805_2012Metric_Pad1.18x1.45mm_HandSolder_L | C4, C6, C10, C24, C25 |
| 1 | 100UF 100nF | C_0805_2012Metric_Pad1.18x1.45mm_HandSolder_L | C7 |
| 1 | 22UF 10uF | C_0805_2012Metric_Pad1.18x1.45mm_HandSolder_L | C9 |
| 1 | 330UF 22pF | C_0805_2012Metric_Pad1.18x1.45mm_HandSolder_L | C11 |
| 1 | 100NF 10uF | C_0805_2012Metric_Pad1.18x1.45mm_HandSolder_L | C12 |
| 1 | 100NF 330uF | CP_Radial_D10.0mm_P5.00mm_F | C17 |
| 1 | 4K7 1k | R_0805_2012Metric_Pad1.20x1.40mm_HandSolder_L | R1 |
| 2 | 120 | R_0805_2012Metric_Pad1.20x1.40mm_HandSolder_L | R2, R7 |
| 3 | 4.7k | R_0805_2012Metric_Pad1.20x1.40mm_HandSolder_L | R3, R13, R14 |
| 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 4.7k | R_0805_2012Metric_Pad1.20x1.40mm_HandSolder_L | R6 |
| 2 | 10M | R_0805_2012Metric_Pad1.20x1.40mm_HandSolder_L | R8, R86 |
| 4 | 10k | R_0805_2012Metric_Pad1.20x1.40mm_HandSolder_L | R9, R10, R11, R12 |
Front dash unit 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.
Front dash unit: common questions
What microcontroller does the Front dash unit use?
The Front dash unit is built around the ESP32-S3-WROOM-2, from the ESP32 family.
How big is the Front dash unit PCB?
The Front dash unit measures 101 × 63 mm, has 2 copper layers and is 1.6 mm thick.
How many components are on the Front dash unit?
56 components, from 35 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 Front dash unit 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 Front dash unit 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.
Can I test firmware for the Front dash unit 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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