4 layers53.3 × 27.9 mm
2 layers
Shift Control Unit
Nomalah/Budget-Racing-ElectronicsAll electronics for the budget racing vehicle
- Copper layers
- 2
- Thickness
- 1.6 mm
- Parts
- 27
- Nets
- 41
- Pads
- 128
- Tracks, vias
- 0, 0
- Routed
- Not yet
- KiCad
- KiCad 8.0 (file 20240108)
- Created
- 17 Oct 2024
- Updated
- 21 Apr 2026
Overview
Shift Control Unit is an open-source printed circuit board by Nomalah, from the Nomalah/Budget-Racing-Electronics repository on GitHub. It is a 2-layer board with 27 parts on 41 nets.
It is built around the ESP32-C3-WROOM-02U-N4, MCP2551-I/SN-HG and ADS1113IDGS, with the AMS1117-3.3, L7805 and AO3400A among its other parts. Its parts include 12 resistors, 5 ICs, 4 connectors, 2 transistors and 1 capacitor. It belongs with the ESP32 and RISC-V boards of this library.
Main components
6
ESP32-C3-WROOM-02U-N4
SMD-19P-40℃~+85℃ -98dBm 2.4GHz 20.5dBm 345mA 3V~3.6V 82mA Bluetooth5.0 ESP32-C3 Chip UART、SPI、I2C、I2S、JTAG、USB SMD-19P WiFi Modules ROHSEspressif SystemsWiFi Modules
MCP2551-I/SN-HG
SOP-8SOP-8 CAN Transceivers ROHSHGSEMICAN Transceivers
ADS1113IDGS
MSOP10Ultra-Small, Low-Power, 4 Channels 16-Bit Analog-to-Digital Converter with Internal ReferenceTexas InstrumentsUncategorised
AMS1117-3.3
SOT-223-40℃~+125℃ 0.003%Vout 1 1.1V@(800mA) 15V 1A 3.3V 5mA 72dB@(120Hz) Fixed Over Current Protection、Short Circuit Protection、Thermal shutdown Positive SOT-223 Voltage Regulators - Linear, Low Drop Out (LDO) Regulators ROHSAdvanced Monolithic SystemsVoltage Regulators - Linear, Low Drop Out (LDO) Regulators
L7805
TO-220ST0℃~+125℃@(Tj) 1 1.2A 20V 2V@(1A) 42uV 500uA 5V 73dB@(120Hz) Fixed Positive Short Circuit Protection TO-220ST Voltage Regulators - Linear, Low Drop Out (LDO) Regulators ROHSOSENVoltage Regulators - Linear, Low Drop Out (LDO) Regulators
AO3400A
SOT-23-55℃~+150℃ 1 N-channel 1.45V 1.4W 30V 48mΩ@2.5V 5.7A 50pF 630pF 75pF 7nC@10V N-Channel SOT-23 MOSFETs ROHSAlpha & Omega SemiconductorMOSFETs
README
README.mdBudget Racing
Parts
27| Qty | Value | Footprint | References |
|---|---|---|---|
| 4 | 10K | Resistor_SMD:R_0603_1608Metric | R1, R7, R10, R11 |
| 2 | 100 | Resistor_SMD:R_0603_1608Metric | R9, R12 |
| 2 | 1K | Resistor_SMD:R_0603_1608Metric | R2, R8 |
| 2 | 4.7K | Resistor_SMD:R_0603_1608Metric | R3, R4 |
| 2 | AO3400A | Package_TO_SOT_SMD:SOT-23 | Q1, Q2 |
| 1 | 120 | Resistor_SMD:R_0603_1608Metric | R6 |
| 1 | 12K | Resistor_SMD:R_0603_1608Metric | R13 |
| 1 | 150nF | Capacitor_SMD:C_0603_1608Metric | C1 |
| 1 | ADS1113IDGS | Package_SO:TSSOP-10_3x3mm_P0.5mm | U4 |
| 1 | AMS1117-3.3 | Package_TO_SOT_SMD:SOT-223-3_TabPin2 | U3 |
| 1 | ESD2CAN24-Q1 | Package_TO_SOT_SMD:SOT-23-3 | D1 |
| 1 | ESP32-C3-WROOM-02U | RF_Module:ESP32-C3-WROOM-02U | U1 |
| 1 | L7805 | Package_TO_SOT_SMD:TO-252-2 | U2 |
| 1 | MCP2551-I-SN | Package_SO:SOIC-8_3.9x4.9mm_P1.27mm | U5 |
| 1 | Power Jumper | Connector_PinHeader_2.54mm:PinHeader_1x03_P2.54mm_Vertical | JP1 |
| 1 | SCU CAN | Connector_PinSocket_2.54mm:PinSocket_1x03_P2.54mm_Vertical | J2 |
| 1 | SCU PWR | Connector_PinSocket_2.54mm:PinSocket_1x04_P2.54mm_Vertical | J1 |
| 1 | SCU SIG | Connector_PinSocket_2.54mm:PinSocket_1x05_P2.54mm_Vertical | J3 |
| 1 | Termination Jumper | Connector_PinHeader_2.54mm:PinHeader_1x03_P2.54mm_Vertical | JP2 |
| 1 | USB_B | Connector_USB:USB_B_TE_5787834_Vertical | J4 |
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Questions
What parts does the Shift Control Unit use?
27 parts, built around the ESP32-C3-WROOM-02U-N4, MCP2551-I/SN-HG, ADS1113IDGS and AMS1117-3.3. 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 Shift Control Unit KiCad files?
From the Nomalah/Budget-Racing-Electronics repository on GitHub, at the commit this page was made from: the board is Shift Control Unit/Shift Control Unit.kicad_pcb and its schematic BSPD/BSPD.kicad_sch. PCBKit opens the board in the browser, with nothing to install.
Can I use the Shift Control Unit design in my own project?
Its repository states no licence, so its author keeps all rights: ask Nomalah before reusing the design.