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Elec Poulpe 3d

pollen-robotics·elec_Poulpe_3d

Elec Poulpe 3d PCB layout, top view — open source STM32 board by pollen-robotics
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About the Elec Poulpe 3d PCB

Elec Poulpe 3d is an open source STM32 PCB design by pollen-robotics, published on GitHub under the Apache-2.0 license. It is a 4-layer board measuring 45 × 86.6 mm, with 211 components from 46 distinct parts.

Its main chip is the STM32H742/3VxTx, from the STM32 family. Other key parts include the LTC4332CUFD-PBF, BMI088, TMC4671, 74LVC3G17 and LTC4331CUFD-PBF. By type, the board carries 86 capacitors, 45 resistors, 25 test points, 22 diodes, 12 ICs and 12 connectors.

From the project

Tripple Motor Control Board for Reachy 2

"Poulpe3d" is build from "Poulpe" as it aims on driving Orbita 3 Dofs. It is paireds with boards "Ventouse3d" that drive 3 small BLDC Motors.

Elec Poulpe 3d, from the project README
From the project README

Main components on the Elec Poulpe 3d

STM32H742/3VxTxLTC4332CUFD-PBFBMI088TMC467174LVC3G17LTC4331CUFD-PBF24LC32LAN9252

Elec Poulpe 3d bill of materials (BOM)

211 components, 46 distinct parts — part numbers from the project's BOM.

QtyPartRefs
1
STM32H742/3VxTx
U1
1
LTC4332CUFD-PBF
U2
1
BMI088
U3
3
TMC4671
U4, U6, U8
3
74LVC3G17
U5, U7, U9
1
LTC4331CUFD-PBF
U10
1
24LC32
U12
1
LAN9252
U13
4
25MHz
X2, X3, X4, X5
1
Pico8
J1
1
Pico6
J2
4
SlimStack Receptacle
J3, J7, J11, J13
1
Trinamic_RTMI
J4
3
Pico5
J9, J10, J12
2
Pico5
J14, J15
25
TestPoint_Flag
TP6, TP7, TP8, TP9, TP10, TP11, TP12, TP13 +17
1
PT61020EL
TR1
7
Green
D1, D2, D5, D9, D13, D18, D21
3
Dual TVS Diode
D3, D4, D17
9
D_Schottky
D6, D7, D8, D10, D11, D12, D14, D15 +1
Show 26 more
QtyPartRefs
2
Yellow
D19, D20
1
Red
D22
4
FB
L2, L3, L4, L5
63
100n 6V3
C1, C4, C5, C6, C7, C8, C9, C10 +55
2
2.2u 6V3
C2, C3
2
4.7uF 6V3
C11, C12
2
1uF 6V3
C13, C14
6
4.7u 6V3
C32, C33, C40, C47, C56, C63
3
470n 6V3
C34, C48, C64
3
10u 6V3
C76, C77, C78
1
470p 6V3
C79
2
22n 50V
C83, C85
2
1000pF 2kV
C88, C89
4
100k
R1, R14, R17, R20
8
10k
R2, R13, R16, R18, R21, R25, R29, R30
2
1K
R3, R12
4
620R
R4, R6, R7, R8
2
120R
R5, R9
2
0R
R10, R11
5
470R
R15, R19, R22, R28, R45
3
1k
R23, R24, R31
2
4k7
R26, R27
2
3k3
R32, R33
1
12.1k - 1%
R34
8
49R9
R35, R36, R37, R38, R39, R40, R41, R42
2
75R
R43, R44

Elec Poulpe 3d design files

The KiCad project lives in the pollen-robotics/elec_Poulpe_3d repository on GitHub; these links point at the commit this page was built from.

Elec Poulpe 3d: common questions

What microcontroller does the Elec Poulpe 3d use?

The Elec Poulpe 3d is built around the STM32H742/3VxTx, from the STM32 family.

How big is the Elec Poulpe 3d PCB?

The Elec Poulpe 3d measures 45 × 86.6 mm, has 4 copper layers and is 1.566 mm thick.

How many components are on the Elec Poulpe 3d?

211 components, from 46 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 Elec Poulpe 3d design files?

From the pollen-robotics/elec_Poulpe_3d 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 Elec Poulpe 3d design in my own project?

Yes, under the terms of its Apache-2.0 license, which pollen-robotics chose for the repository.

Can I test firmware for the Elec Poulpe 3d without the hardware?

Yes. HardLabs builds a simulation of the board from its netlist and BOM, so you can run and debug STM32 firmware against it before you order a PCB.

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