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Stepper tester

NB6RULES·Nadec-Biju-Fabacademy-Files·week-10/stepper tester/stepper tester.kicad_pcb

Stepper tester PCB layout, top view — open source ESP32 board by NB6RULES

About the Stepper tester PCB

Stepper tester is an open source ESP32 PCB design by NB6RULES, published on GitHub. It is a 2-layer board measuring 102.5 × 39.5 mm, with 29 components from 21 distinct parts.

Its main chip is the ESP32-WROOM-32E, from the ESP32 family. Other key parts include the AMS1117-3.3 and DRV8825_STEPPER_MOTOR_DRIVER_CARRIER. By type, the board carries 9 capacitors, 8 resistors, 4 connectors, 3 ICs, 3 diodes and 2 switches.

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

Main components on the Stepper tester

AMS1117-3.3ESP32-WROOM-32EDRV8825_STEPPER_MOTOR_DRIVER_CARRIER

Stepper tester bill of materials (BOM)

29 components, 21 distinct parts.

QtyPartRefs
1
AMS1117-3.3
U1
1
ESP32-WROOM-32E
U2
1
DRV8825_STEPPER_MOTOR_DRIVER_CARRIER
U3
1
PROG
J1
1
2.54mm_Vertical_THT
J2
1
Screw_Terminal_01x02_P3.5mm
J3
1
S4B-PH-SM4-TB
J9
1
SMD_6x3.5mm_h2.5mm
SW1
1
NDS-03V
NDS-03V_C501525
Diptronics(圜达)
SW2
3
LED_1206
D1, D2, D3
2
4.7uF
C1, C5
2
100nF
C2, C7
1
10uF
C3
1
0.1uF
C4
1
1uF
C6
1
100uF
C8
1
470uf
C9
3
10K
R1, R3, R4
2
1k
R2, R6
1
R220
R5
Show 1 more
QtyPartRefs
2
4.7K
R7, R8

Stepper tester design files

The KiCad project lives in the NB6RULES/Nadec-Biju-Fabacademy-Files repository on GitHub; these links point at the commit this page was built from.

Stepper tester: common questions

What microcontroller does the Stepper tester use?

The Stepper tester is built around the ESP32-WROOM-32E, from the ESP32 family.

How big is the Stepper tester PCB?

The Stepper tester measures 102.5 × 39.5 mm, has 2 copper layers and is 1.6 mm thick.

How many components are on the Stepper tester?

29 components, from 21 distinct parts. The full bill of materials is listed on this page.

Where can I download the Stepper tester design files?

From the NB6RULES/Nadec-Biju-Fabacademy-Files 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 tester design in my own project?

The repository has no license, so all rights stay with NB6RULES. Use it as a reference, and ask the author before reusing the design.

Can I test firmware for the Stepper tester without the hardware?

Yes. HardLabs builds a simulation of the board from its netlist and BOM, so you can run and debug ESP32 firmware against it before you order a PCB.

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