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Shift Control Unit

Nomalah·Budget-Racing-Electronics·Shift Control Unit/Shift Control Unit.kicad_pcb

Shift Control Unit PCB layout, top view — open source ESP32 board by Nomalah

About the Shift Control Unit PCB

Shift Control Unit is an open source ESP32 PCB design by Nomalah, published on GitHub. It is a 2-layer board measuring 34.4 × 31.2 mm, with 25 components from 18 distinct parts.

Its main chip is the ESP32-C3-WROOM-02U, from the ESP32 family. Other key parts include the L7805, AMS1117-3.3, ADS1113IDGS and MCP2551-I-SN. By type, the board carries 12 resistors, 5 ICs, 4 connectors, 2 transistors, 1 diode and 1 capacitor.

From the project

All electronics for the budget racing vehicle

Main components on the Shift Control Unit

ESP32-C3-WROOM-02UL7805AMS1117-3.3ADS1113IDGSMCP2551-I-SN

Shift Control Unit bill of materials (BOM)

25 components, 18 distinct parts.

QtyPartRefs
1
ESP32-C3-WROOM-02U
U1
1
L7805
U2
1
AMS1117-3.3
U3
1
ADS1113IDGS
U4
1
MCP2551-I-SN
U5
2
AO3400A
Q1, Q2
1
SCU PWR
J1
1
SCU CAN
J2
1
SCU SIG
J3
1
USB_B
J4
1
ESD2CAN24-Q1
D1
1
150nF
C1
4
10K
R1, R7, R10, R11
2
1K
R2, R8
2
4.7K
R3, R4
1
120
R6
2
100
R9, R12
1
12K
R13

Shift Control Unit design files

The KiCad project lives in the Nomalah/Budget-Racing-Electronics repository on GitHub; these links point at the commit this page was built from.

Shift Control Unit: common questions

What microcontroller does the Shift Control Unit use?

The Shift Control Unit is built around the ESP32-C3-WROOM-02U, from the ESP32 family.

How big is the Shift Control Unit PCB?

The Shift Control Unit measures 34.4 × 31.2 mm, has 2 copper layers and is 1.6 mm thick.

How many components are on the Shift Control Unit?

25 components, from 18 distinct parts. The full bill of materials is listed on this page.

Where can I download the Shift Control Unit design files?

From the Nomalah/Budget-Racing-Electronics repository on GitHub, which has the KiCad layout and the schematic; the links under Design files point to each one.

Can I use the Shift Control Unit design in my own project?

The repository has no license, so all rights stay with Nomalah. Use it as a reference, and ask the author before reusing the design.

Can I test firmware for the Shift Control 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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