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Step motor board

borzeman·PzbElectronics·step_motor_board/step_motor_board.kicad_pcb

Step motor board layout, top view — open source STM32 board by borzeman

About the Step motor board

Step motor board is an open source STM32 PCB design by borzeman, published on GitHub. It is a 2-layer board measuring 91.6 × 60.5 mm, with 129 components from 44 distinct parts.

Its main chip is the STM32G070RBTx (LQFP-64), from the STM32 family. Other key parts include the ADM3485EARZ-REEL (SOIC-8), HEF40106BT (SO-14), Pai141M30 (SOIC-16), AM1SS-2403SJZ and L78L05 (SOT89-3). By type, the board carries 53 resistors, 43 capacitors, 8 ICs, 8 diodes, 6 connectors and 5 transistors.

From the project

Репозиторий для поддержки версионирования при разработке плат для киоска.

Main components on the Step motor board

ADM3485EARZ-REEL (SOIC-8)HEF40106BT (SO-14)STM32G070RBTx (LQFP-64)Pai141M30 (SOIC-16)AM1SS-2403SJZL78L05 (SOT89-3)74LVC2G14 (SOT-23-6)

Step motor board bill of materials (BOM)

129 components, 44 distinct parts.

QtyPartRefs
1
ADM3485EARZ-REEL (SOIC-8)
U1
1
HEF40106BT (SO-14)
U2
1
STM32G070RBTx (LQFP-64)
U3
2
Pai141M30 (SOIC-16)
U4, U9
1
AM1SS-2403SJZ
U5
1
L78L05 (SOT89-3)
U6
1
74LVC2G14 (SOT-23-6)
U8
3
2SC2712 (SOT-23)
Q1, Q2, Q3
2
DTC114ECA (SOT-23)
Q4, Q5
1
Crystal_3225 8MHz
Y1
1
PLL-10 (Prog)
J1
1
DG141R-2.54-10P-14-00A(H) (Driver)
J2
1
DG141R-2.54-04P-14-00A(H) (DI2)
J3
1
DG141R-2.54-04P-14-00A(H) (DI1)
J4
1
DG141R-2.54-04P-14-00A(H) (DI3)
J5
1
DG141R-2.54-04P-14-00A(H) (DI4)
J6
1
0451.500MRL
F1
1
IS281- 4 (SOIC-16W)
OC1
1
LTV-827S (SMDIP-8)
OC2
2
KPA-3010CGCK
D1, D2
Show 24 more
QtyPartRefs
4
SMAJ12A (SMA)
D3, D4, D5, D6
2
SMBJ3.3A (SMB)
D7, D8
1
BLM18KG101TH1
FB1
1
6,8uH 3,5A ETQP3M6R8KVP
L1
1
1uF 100V 0805
C1
2
270 pf X7R 1206 2000v 202R18W271KW4E
C2, C13
26
0,1uF 100V 0603
C3, C5, C6, C7, C8, C9, C15, C16 +18
3
4,7uF 50V 0805
C4, C11, C12
1
10uF 50V 1210 GRM32ER71H106K
C10
1
47uF 63V D6,3 H11
C14
1
0,33uF 50V 0603
C23
6
0,01uF 50V 0603
C33, C34, C35, C36, C37, C38
2
20pF 50V 0603
C42, C43
2
0805-10 кОм±5%-0,125 Вт
R1, R8
4
0805-4,7 кОм±5%-0,125 Вт
R2, R4, R18, R19
2
0805-150 Ом±5%-0,125 Вт
R5, R7
3
2512-1,3 кОм±5%-1 Вт
R9, R12, R20
3
0603-1.5 кОм±5%-0,062 Вт
R10, R13, R21
3
0603-270 Ом±5%-0,062 Вт
R11, R14, R22
9
0603-10 кОм±5%-0,0625 Вт
R15, R16, R17, R44, R45, R48, R49, R50 +1
16
1206-2 кОм±5%-0,25 Вт
R23, R24, R25, R26, R27, R28, R29, R30 +8
4
1206-1 кОм±5%-0,25 Вт
R39, R40, R41, R42
6
0603-1 кОм±5%-0,0625 Вт
R43, R46, R51, R52, R54, R55
1
1206-620 Ом±5%-0,25 Вт
R47

Step motor board design files

The KiCad project lives in the borzeman/PzbElectronics repository on GitHub; these links point at the commit this page was built from.

Step motor board: common questions

What microcontroller does the Step motor board use?

The Step motor board is built around the STM32G070RBTx (LQFP-64), from the STM32 family.

How big is the Step motor board?

The Step motor board measures 91.6 × 60.5 mm, has 2 copper layers and is 1.6 mm thick.

How many components are on the Step motor board?

129 components, from 44 distinct parts. The full bill of materials is listed on this page.

Where can I download the Step motor board design files?

From the borzeman/PzbElectronics repository on GitHub, which has the KiCad layout and the schematic; the links under Design files point to each one.

Can I use the Step motor board design in my own project?

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

Can I test firmware for the Step motor board 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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