HardLabs

Cspcb

smooker·cspcb·stepper_sc/stepper_sc.kicad_pcb

Cspcb PCB layout, top view — open source board by smooker

About the Cspcb PCB

Cspcb is an open source PCB design by smooker, published on GitHub. It is a 2-layer board measuring 90 × 135.4 mm, with 24 components from 19 distinct parts.

Other key parts include the 78M05. By type, the board carries 12 connectors, 5 capacitors, 4 resistors, 2 transistors and 1 IC.

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

From the project

claude@smooker pcb creation

Single-axis stepper motor controller board built around the WeAct STM32F411CEU6 Black Pill v3.1.

Drives a CWD556 opto-isolated stepper driver (PUL/DIR interface) from MCU outputs via NPN buffer stage.

Schematic and netlist are generated from firmware source — main.h is the single source of truth for MCU pin assignments.

See firmware/ for STM32 application source (Core/).

Main components on the Cspcb

78M05

Cspcb bill of materials (BOM)

24 components, 19 distinct parts — part numbers from the project's BOM.

QtyPartRefs
1
78M05
U1
2
BC547
Q1, Q2
1
PWR_24V
J1
1
PUL
J2
1
DIR
J3
1
ES_L
J4
1
ES_R
J5
1
JOGL
J6
1
JOGR
J7
1
STEPL
J8
1
STEPR
J9
1
BUZZ
J10
1
Black_Pill_front
J11
1
Black_Pill_back
J12
1
47uF
C1
3
100NF
100nF
C2, C4, C5
1
100uF
C3
2
1k
R1, R3
2
10k
R2, R4

Cspcb design files

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

Cspcb: common questions

How big is the Cspcb PCB?

The Cspcb measures 90 × 135.4 mm, has 2 copper layers and is 1.6 mm thick.

How many components are on the Cspcb?

24 components, from 19 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 Cspcb design files?

From the smooker/cspcb 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 Cspcb design in my own project?

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

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