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Ble stepper motor analyzer

zapta·ble_stepper_motor_analyzer·kicad/stepper_monitor.kicad_pcb

Ble stepper motor analyzer PCB layout, top view — open source ESP32 board by zapta
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About the Ble stepper motor analyzer PCB

Ble stepper motor analyzer is an open source ESP32 PCB design by zapta, published on GitHub. It is a 2-layer board measuring 38.5 × 43 mm, with 58 components from 44 distinct parts.

Its main chip is the ESP32-WROOM-32U-N4, from the ESP32 family. Other key parts include the CP2102N-A01-GQFN28, AMS1117-3.3, C2684892 and CC6920BSO-5A. By type, the board carries 20 resistors, 19 capacitors, 6 ICs, 6 diodes, 5 connectors and 1 transistor.

It belongs with the iot & wireless, displays & leds and robotics & motion designs in this gallery.

From the project

A low cost stepper motor analyzer that uses wireless BLE link to display the data in real time on a Windows/Mac/Linux PC.

A short video of the app is available here https://vimeo.com/798169140

The BLE Stepper Motor Analyzer ('the analyzer') is a low-cost, open source system that analyzes stepper motor signals and display the the data in real time on a computer screen. The system includes two parts:

1. The Stepper Motor Probe ('the device'). This is a small electronic board that monitors the currents through the stepper motor wires, extracts information such as steps, and speed, and transmits the data via Bluetooth BLE.

Ble stepper motor analyzer, from the project README
From the project README

Main components on the Ble stepper motor analyzer

CP2102N-A01-GQFN28AMS1117-3.3ESP32-WROOM-32U-N4C2684892CC6920BSO-5A

Ble stepper motor analyzer bill of materials (BOM)

58 components, 44 distinct parts — part numbers from the project's BOM.

QtyPartRefs
1
CP2102N-A01-GQFN28
5V
U1
1
AMS1117-3.3
CP2102N-A01-GQFN28
U2
1
ESP32-WROOM-32U-N4
AMS1117-3.3
U3
1
C2684892
CC6920BSO-5A
U4
1
CC6920BSO-5A
U5
1
CC6920BSO-5A
ESP32-WROOM-32U-N4
U6
1
MMDT2222A
Q1
2
CONN_01X04_MALE
Conn_01x04_Pin
J1, J2
1
CONN_01X02_MALE
Conn_01x02_Pin
J3
1
USB_C_RECEPTACLE_USB2.0
USB_C_Receptacle_USB2.0
J4
1
C2935458
JTAG
J5
1
SW_Push
SW1
1
C71911
RED
D1
1
C165978
GREEN
D2
1
C71911
SM4007PL
D3
1
C8598
RED
D4
1
5V6
B5819W
D5
1
B5819W
D6
1
100N
10u 50V
C1
1
C440198
100n 50V
C2
Show 24 more
QtyPartRefs
1
10U
100n
C3
3
100N
100n
C4, C11, C13
2
100N
10u
C5, C6
1
2U2
100n
C7
1
C307331
100n
C8
1
10U
2u2
C9
1
10U
10u
C10
1
10u
C12
1
100n
C14
1
100N
DNP
C15
1
10U
2n2
C16
1
2N2
100n
C17
1
2N2
DNP
C18
1
2n2
C19
6
5K1
R1, R2, R4, R5, R6, R11
1
5K1
200K
R3
2
10K
5K1
R7, R10
2
10K
R8, R9
1
300K
10K
R12
1
20K
10K
R13
4
1K
R14, R15, R19, R20
1
0R
R16
1
DNP
R17
1
5K1
DNP
R18

Ble stepper motor analyzer design files

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

Ble stepper motor analyzer: common questions

What microcontroller does the Ble stepper motor analyzer use?

The Ble stepper motor analyzer is built around the ESP32-WROOM-32U-N4, from the ESP32 family.

How big is the Ble stepper motor analyzer PCB?

The Ble stepper motor analyzer measures 38.5 × 43 mm, has 2 copper layers and is 1.6 mm thick.

How many components are on the Ble stepper motor analyzer?

58 components, from 44 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 Ble stepper motor analyzer design files?

From the zapta/ble_stepper_motor_analyzer 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 Ble stepper motor analyzer design in my own project?

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

Can I test firmware for the Ble stepper motor analyzer 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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