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OSSM ALT SERVO V3 4

jollydodo·OSSM-ALT-Edition·PCB-Design/Kicad Files/OSSM-ALT-PCB/v3_4/OSSM_ALT_SERVO_V3_4.kicad_pcb

OSSM ALT SERVO V3 4 PCB layout, top view — open source ESP32 board by jollydodo
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About the OSSM ALT SERVO V3 4 PCB

OSSM ALT SERVO V3 4 is an open source ESP32 PCB design by jollydodo, published on GitHub under the Custom license license. It is a 4-layer board measuring 55 × 50 mm, with 120 components from 73 distinct parts.

Its main chip is the ESP32-S3, from the ESP32 family. Other key parts include the TPS54331DR, CYA0630-6.8UH, 40MHZ, CH224Q and SP3485EN. By type, the board carries 39 capacitors, 38 resistors, 14 diodes, 10 connectors, 9 ICs and 4 transistors.

It belongs with the robotics & motion designs in this gallery.

From the project

Alternative community edition of the OSSM

This folder contains everything related to the two PCBs of the OSSM ALT Edition (the main PCB and the brake chopper), organized as follows:

Main components on the OSSM ALT SERVO V3 4

ESP32-S3TPS54331DRCYA0630-6.8UH40MHZCH224QSP3485ENTPS16630RGERLM74700SM712-02HTG

OSSM ALT SERVO V3 4 bill of materials (BOM)

120 components, 73 distinct parts — part numbers from the project's BOM.

QtyPartRefs
1
ESP32-S3
U1
1
TPS54331DR
Texas Instruments
U2
1
CYA0630-6.8UH
U3
1
40MHZ
40Mhz
U4
1
CH224Q
U5
1
SP3485EN
MaxLinear
U6
1
TPS16630RGER
U7
1
LM74700
U8
1
SM712-02HTG
U9
3
BC817-25
hongjiacheng
Q1, Q2, Q4
1
FDS5351
Changjiang Electronics Tech (CJ)
Q3
2
C2927039
Connector, USB-TYPE-C-16P
J1, J3
1
Brake+
J2
1
2x2 Header
J4
1
Conn_01x03_Socket
J5
1
CONN_01X04_SOCKET
Conn_01x04_Socket
J6
1
RS485 con
J7
1
57AIM30
J8
1
power_con
J9
1
Brake-
J10
Show 53 more
QtyPartRefs
1
Antenna_Chip
AE1
2
C720477
Tactile Button, 160gf
XUNPU
S1, S2
1
WS2812_2020
LED1
1
SMF30A
hongjiacheng
D1
3
H5VL10BC
hongjiacheng
D2, D3, D10
1
SS34
MDD（Microdiode Electronics）
D4
1
SS33
hongjiacheng
D5
2
C2286
Red
Hubei KENTO Elec
D6, D12
1
C2297
Green
Hubei KENTO Elec
D7
1
H5VU10U
hongjiacheng
D8
1
B0540WS
hongjiacheng
D9
1
SRV05-4
hongjiacheng
D11
1
ES5JBF
hongjiacheng
D13
1
SMBJ33CA
hongjiacheng
D14
1
2.0NH
2.0nH
L1
1
2.7NH
2.7nH
L2
2
4.7UF
4.7uF
FH(Guangdong Fenghua Advanced Tech)
C1, C3
4
1UF
1uF
Samsung Electro-Mechanics
C2, C19, C22, C24
3
10NF
10nF
Samsung Electro-Mechanics
C4, C5, C8
8
100NF
100nF
Samsung Electro-Mechanics
C6, C7, C10, C14, C23, C25, C27, C28
2
1NF
1nF
FH(Guangdong Fenghua Advanced Tech)
C9, C39
2
1.5PF
1.5pF
FH(Guangdong Fenghua Advanced Tech)
C11, C15
1
47PF
47pF
FH(Guangdong Fenghua Advanced Tech)
C12
2
47UF
47uF
Samsung Electro-Mechanics
C13, C16
2
15PF
15pF
FH(Guangdong Fenghua Advanced Tech)
C17, C18
2
10UF
10uF
Samsung Electro-Mechanics
C20, C26
2
1UF
1uF
Samsung Electro-Mechanics
C21, C29
4
100NF
100nF
YAGEO
C30, C31, C32, C38
2
680uF
AVX
C33, C34
2
470uF
C35, C36
1
10UF
10uF
Samsung Electro-Mechanics
C37
1
150kΩ
UNI-ROYAL(Uniroyal Elec)
R1
1
68kΩ
UNI-ROYAL(Uniroyal Elec)
R2
1
210kΩ
UNI-ROYAL(Uniroyal Elec)
R3
1
120kΩ
UNI-ROYAL(Uniroyal Elec)
R4
1
30kΩ
UNI-ROYAL(Uniroyal Elec)
R5
2
0Ω
UNI-ROYAL(Uniroyal Elec)
R6, R7
5
4.7kΩ
UNI-ROYAL(Uniroyal Elec)
R8, R19, R20, R26, R27
2
1.5kΩ
UNI-ROYAL(Uniroyal Elec)
R9, R37
1
510Ω
UNI-ROYAL(Uniroyal Elec)
R10
1
10kΩ
UNI-ROYAL(Uniroyal Elec)
R11
4
20kΩ
UNI-ROYAL(Uniroyal Elec)
R12, R30, R32, R38
2
33Ω
UNI-ROYAL(Uniroyal Elec)
R13, R14
1
330Ω
UNI-ROYAL(Uniroyal Elec)
R15
2
5.1kΩ
UNI-ROYAL(Uniroyal Elec)
R16, R17
3
470Ω
UNI-ROYAL(Uniroyal Elec)
R18, R23, R25
2
100Ω
UNI-ROYAL(Uniroyal Elec)
R21, R22
1
120Ω
UNI-ROYAL(Uniroyal Elec)
R24
2
470kΩ
UNI-ROYAL(Uniroyal Elec)
R28, R34
1
13kΩ
UNI-ROYAL(Uniroyal Elec)
R29
1
3.3kΩ
UNI-ROYAL(Uniroyal Elec)
R31
2
10kΩ
UNI-ROYAL(Uniroyal Elec)
R33, R36
1
47kΩ
UNI-ROYAL(Uniroyal Elec)
R35

OSSM ALT SERVO V3 4 design files

The KiCad project lives in the jollydodo/OSSM-ALT-Edition repository on GitHub; these links point at the commit this page was built from.

OSSM ALT SERVO V3 4: common questions

What microcontroller does the OSSM ALT SERVO V3 4 use?

The OSSM ALT SERVO V3 4 is built around the ESP32-S3, from the ESP32 family.

How big is the OSSM ALT SERVO V3 4 PCB?

The OSSM ALT SERVO V3 4 measures 55 × 50 mm, has 4 copper layers and is 1.6 mm thick.

How many components are on the OSSM ALT SERVO V3 4?

120 components, from 73 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 OSSM ALT SERVO V3 4 design files?

From the jollydodo/OSSM-ALT-Edition 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 OSSM ALT SERVO V3 4 design in my own project?

It is published under Custom license, which limits how it may be reused; read the license before building on it.

Can I test firmware for the OSSM ALT SERVO V3 4 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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