HardLabs

Stepper motor controller

abdallah-yasser·stepper-motor-controller-pcb·hardware/stepper_controller.kicad_pcb

Stepper motor controller PCB layout, top view — open source AVR/Arduino board by abdallah-yasser

About the Stepper motor controller PCB

Stepper motor controller is an open source AVR/Arduino PCB design by abdallah-yasser, published on GitHub under the MIT license. It is a 4-layer board measuring 60 × 47 mm, with 63 components from 31 distinct parts.

Its main chip is the ATmega328P-A, from the AVR/Arduino family. Other key parts include the NCP1117-5.0_SOT223, DRV8825 and CH340G. By type, the board carries 24 capacitors, 18 resistors, 8 connectors, 4 ICs, 4 diodes and 2 crystals.

It belongs with the robotics & motion and usb & debug tools designs in this gallery.

From the project

4-layer KiCad PCB: Arduino-compatible stepper motor controller (ATmega328P + DRV8825)

An Arduino-compatible stepper motor controller board: ATmega328P + DRV8825 on a compact 4-layer PCB

The design is organized into clearly separated functional blocks:

Layout notes: - The 4-layer stack-up has copper pour zones on the inner layers (In1.Cu / In2.Cu), with signal routing mainly on the top layer. - Most components are SMD on the top side, which keeps assembly single-sided. - The power input, motor terminal, USB and sensor headers are placed along the board edges for easy cabling.

Stepper motor controller, from the project README
From the project README

Main components on the Stepper motor controller

NCP1117-5.0_SOT223DRV8825CH340GATmega328P-A

Stepper motor controller bill of materials (BOM)

63 components, 31 distinct parts.

QtyPartRefs
1
NCP1117-5.0_SOT223
U2
1
DRV8825
U3
1
CH340G
U4
1
ATmega328P-A
U6
1
12MHz
Y1
1
16MHz
Y2
4
Conn_01x03_Pin
J1, J3, J5, J7
1
Power_input
J2
1
ISP port
J6
1
Conn_01x04_Socket
J8
1
USB_B_Micro
J9
1
Polyfuse_Small
F1
1
~
JP1
1
Reset_button
SW1
1
SS34
D1
3
LED
D2, D3, D4
4
22pF
C1, C2, C10, C11
1
10nF
C3
15
100nF
C4, C6, C7, C8, C9, C12, C13, C14 +7
1
10uF
C5
Show 11 more
QtyPartRefs
2
4.7uF
C23, C24
1
470nF
C30
4
1.6kΩ
R1, R2, R3, R4
3
1KΩ
R5, R6, R14
1
Potentiometer
R7
2
510Ω
R13, R16
2
1MΩ
R15, R20
2
0.1Ω
R17, R21
2
100Ω
R18, R19
1
2.2KΩ
R24
1
10KΩ
R25

Stepper motor controller design files

The KiCad project lives in the abdallah-yasser/stepper-motor-controller-pcb repository on GitHub; these links point at the commit this page was built from.

Stepper motor controller: common questions

What microcontroller does the Stepper motor controller use?

The Stepper motor controller is built around the ATmega328P-A, from the AVR/Arduino family.

How big is the Stepper motor controller PCB?

The Stepper motor controller measures 60 × 47 mm, has 4 copper layers and is 1.6 mm thick.

How many components are on the Stepper motor controller?

63 components, from 31 distinct parts. The full bill of materials is listed on this page.

Where can I download the Stepper motor controller design files?

From the abdallah-yasser/stepper-motor-controller-pcb repository on GitHub, which has the KiCad layout and the schematic; the links under Design files point to each one.

Can I use the Stepper motor controller design in my own project?

Yes, under the terms of its MIT license, which abdallah-yasser chose for the repository.

Can I test firmware for the Stepper motor controller without the hardware?

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

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