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Motor master

PaulBailey-1·motor-master·board/motor_master.kicad_pcb

Motor master PCB layout, top view — open source ESP32 board by PaulBailey-1

About the Motor master PCB

Motor master is an open source ESP32 PCB design by PaulBailey-1, published on GitHub. It is a 2-layer board measuring 47 × 55.5 mm, with 48 components from 28 distinct parts.

Its main chip is the ESP32-S3-WROOM-1-N8, from the ESP32 family. Other key parts include the LM1117MPX-3.3/NOPB and SN65HVD232DR. By type, the board carries 15 capacitors, 12 resistors, 8 connectors, 6 diodes, 4 switches and 3 ICs.

It belongs with the iot & wireless designs in this gallery.

From the project

The board can also be connected to motors through the CAN bus. Connect one end of the CAN chain to the CAN connector on the board and the other end to the TERM connector, or use another termination resistor. NOTE: CAN functionality is still experimental and may not work, feel fre

The board can also be connected to motors through the CAN bus. Connect one end of the CAN chain to the CAN connector on the board and the other end to the TERM connector, or use another termination resistor. NOTE: CAN functionality is still experimental and may not work, feel free to work on it.

The e-stop button will prevent the board from outputting any commands until the MCU is reset with the reset button.

Main components on the Motor master

LM1117MPX-3.3/NOPBSN65HVD232DRESP32-S3-WROOM-1-N8

Motor master bill of materials (BOM)

48 components, 28 distinct parts — part numbers from the project's BOM.

QtyPartRefs
1
LM1117MPX-3.3/NOPB
LM1117MPX-3.3_NOPB
IC1
1
SN65HVD232DR
IC2
1
ESP32-S3-WROOM-1-N8
U1
1
USB4105-GF-A-120
USB4105-GF-A
J1
1
1190297
5-12V
J2
1
TSW-103-07-T-S
PWM1
J3
1
TSW-103-07-T-S
PWM2
J4
1
M20-9990446
FTDI
J5
1
EXT
J6
1
TERM
J7
1
CAN
J8
1
PTS636 SKG25J SMTR LFS
Boot
S1
1
PTS636 SKG25J SMTR LFS
Reset
S2
1
PTS636 SKG25J SMTR LFS
Test
S3
1
FSM4JH
E-Stop
S4
2
SK14
D1, D4
1
TPD4E02B04DQAR
D2
2
150060RS75000
D3, D5
1
SZNUP2105LT1G
D6
4
10UF
10uF
C1, C2, C4, C10
Show 8 more
QtyPartRefs
8
0.1UF
0.1uF
C3, C5, C6, C7, C8, C9, C11, C14
2
100P
100p
C12, C13
1
4.7N
4.7n
C15
2
5.1K
5.1k
R1, R2
2
100
R3, R9
5
10K
10k
R4, R5, R6, R7, R8
2
60
R10, R11
1
120
R12

Motor master design files

The KiCad project lives in the PaulBailey-1/motor-master repository on GitHub; these links point at the commit this page was built from.

Motor master: common questions

What microcontroller does the Motor master use?

The Motor master is built around the ESP32-S3-WROOM-1-N8, from the ESP32 family.

How big is the Motor master PCB?

The Motor master measures 47 × 55.5 mm, has 2 copper layers and is 1.6 mm thick.

How many components are on the Motor master?

48 components, from 28 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 Motor master design files?

From the PaulBailey-1/motor-master 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 Motor master design in my own project?

The repository has no license, so all rights stay with PaulBailey-1. Use it as a reference, and ask the author before reusing the design.

Can I test firmware for the Motor master 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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