HardLabs

Servodrive — board S, single board

sequoia-hope·servodrive·hardware/single_board/servodrive_S.kicad_pcb

Servodrive — board S, single board layout, top view — open source RP2040/RP2350 board by sequoia-hope

About the Servodrive — board S, single board

Servodrive — board S, single board is an open source RP2040/RP2350 PCB design by sequoia-hope, published on GitHub. It is a 6-layer board measuring 65 × 65 mm, with 190 components from 74 distinct parts.

Its main chip is the RP2350A, from the RP2040/RP2350 family. Other key parts include the EG2103, INA241A3, W25Q16JVUXIQ, SPX3819M5-3.3 and MT6701. By type, the board carries 66 capacitors, 64 resistors, 17 ICs, 14 diodes, 8 connectors and 7 transistors.

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

From the project

A simpler brushless motor driver

A round, motor-mounted servodrive: two Ø65 mm boards stacked on the back of a brushless motor, with a magnetic rotary encoder on the shaft axis.

Status: board A captured, placed and routed. 136 parts, 87 nets, 425 pin connections, every one of them made. DRC- and ERC-clean, and KiCad's own extracted netlist matches the intended one connection for connection. Re-routed 2026-09-22 with four of the simulation's changes (below); board B is still an outline. Board S, the single-board variant, captured, placed and routed 2026-09-23 from the same generators, re-routed the same day with TI's buck…

Main components on the Servodrive — board S, single board

EG2103INA241A3RP2350AW25Q16JVUXIQSPX3819M5-3.3MT6701LMR38010SDDARUSBLC6-2SC6SIT3088ETK

Servodrive — board S, single board bill of materials (BOM)

190 components, 74 distinct parts.

QtyPartRefs
3
EG2103
U1, U2, U3
3
INA241A3
U4, U5, U6
1
RP2350A
U7
1
W25Q16JVUXIQ
U8
1
SPX3819M5-3.3
U9
1
MT6701
U10
2
LMR38010SDDAR
U11, U12
1
USBLC6-2SC6
U13
4
SIT3088ETK
U14, U15, U17, U18
3
BSC030N08NS5
Q1, Q3, Q5
3
BSC030N08NS5
Q2, Q4, Q6
1
2N7002
Q1001
1
12MHz
Y1
3
PhasePad_Arc
J1, J2, J3
1
XT30
J4
1
USB-C
J12
1
EXPANSION
J13
1
RS485 IN
J14
1
RS485 OUT
J15
6
ThermalBoss_M2.5
H10, H11, H12, H13, H14, H15
Show 54 more
QtyPartRefs
1
BOOTSEL
SW1
3
ThermalLand_Phase
TL1, TL2, TL3
3
100V fast
D101, D201, D301
3
TPSMF4L54A
D102, D202, D302
1
SMDJ54A
D1001
2
B5819WS
D1002, D1003
4
SM712
D1101, D1102, D1104, D1105
1
RGB
D1103
1
3u3
L701
1
68u
L1001
1
33u
L1002
6
2.2u/100V
C101, C102, C201, C202, C301, C302
6
100n/100V
C103, C104, C203, C204, C303, C304
3
1u/25V
C105, C205, C305
5
100n
C106, C206, C306, C801, C802
3
1n
C108, C208, C308
3
470p/100V C0G
C109, C209, C309
1
22u/25V
C603
3
22u/25V
C604, C1010, C1011
16
100n
C701, C702, C703, C704, C705, C706, C707, C711 +8
2
27p
C709, C710
2
1u
C712, C713
2
4u7
C714, C715
1
1u
C716
2
4u7
C718, C719
6
22u/100V polymer
C1001, C1002, C1012, C1013, C1014, C1015
2
100n/100V
C1003, C1006
2
4u7/100V
C1004, C1007
1
22u/25V
C1009
6
2R2
R101, R102, R201, R202, R301, R302
4
2m0
R105, R106, R205, R206
6
10R
R107, R108, R207, R208, R307, R308
6
10k
R109, R110, R209, R210, R309, R310
7
4k7
R111, R112, R211, R212, R311, R312, R1005
3
2R2
R113, R213, R313
2
0R
R305, R306
5
1k
R701, R702, R1107, R1108, R1109
1
10R
R703
3
10k
R704, R705, R1103
1
33R
R706
2
27R
R707, R708
2
56k 0.1%
R801, R806
1
4k7 0.1%
R802
1
10k 0.1%
R803
1
10k NTC
R901
2
100k
R1001, R1006
1
9k09
R1002
1
470k
R1003
1
68k
R1004
1
24k9
R1007
2
64k9
R1008, R1009
2
5k1
R1101, R1102
1
15k
R1104
2
120R
R1105, R1106

Servodrive — board S, single board design files

The KiCad project lives in the sequoia-hope/servodrive repository on GitHub; these links point at the commit this page was built from.

Servodrive — board S, single board: common questions

What microcontroller does the Servodrive — board S, single board use?

The Servodrive — board S, single board is built around the RP2350A, from the RP2040/RP2350 family.

How big is the Servodrive — board S, single board?

The Servodrive — board S, single board measures 65 × 65 mm, has 6 copper layers and is 1.6 mm thick.

How many components are on the Servodrive — board S, single board?

190 components, from 74 distinct parts. The full bill of materials is listed on this page.

Where can I download the Servodrive — board S, single board design files?

From the sequoia-hope/servodrive repository on GitHub, which has the KiCad layout and the schematic; the links under Design files point to each one.

Can I use the Servodrive — board S, single board design in my own project?

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

Can I test firmware for the Servodrive — board S, single board without the hardware?

Yes. HardLabs builds a simulation of the board from its netlist and BOM, so you can run and debug RP2040/RP2350 firmware against it before you order a PCB.

More boards in servodrive

Similar boards