Legacy stepper motor analyzer

zapta·legacy_stepper_motor_analyzer·kicad/stepper_analyzer.kicad_pcb

Legacy stepper motor analyzer PCB layout, top view — open source board by zapta

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About the Legacy stepper motor analyzer PCB

Legacy stepper motor analyzer is an open source PCB design by zapta, published on GitHub under the CC0-1.0 license. It is a 2-layer board measuring 96.7 × 66.4 mm, with 28 components from 13 distinct parts.

Other key parts include the blackpill_STM32F401CEUx, ACS70331EESATR-2P5B3 and AT24C02D-SSHM-T. By type, the board carries 7 test points, 5 capacitors, 4 ICs, 4 connectors, 4 resistors and 3 diodes.

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

From the project

A DYI minimalist hardware stepper motor analyzer with graphical touch screen.

https://github.com/zapta/legacysteppermotor_analyzer

Michael from the Teaching Tech youtube channel made a great video explaining how stepper motors work and used the Simple Stepper Motor Analyzer for some of the demonstrations.

The Analyzer is self contained, has two 4-wires pass-through connectors connecting the stepper motor, is powered from a common 5V charger with a micro USB cable, provides a simple to use graphical user interface with a 3.5" color touch screen, and provides a plethora of stepper motor measurements.

Legacy stepper motor analyzer, from the project README — From the project README

Main components on the Legacy stepper motor analyzer

blackpill_STM32F401CEUx ACS70331EESATR-2P5B3 AT24C02D-SSHM-T

Legacy stepper motor analyzer bill of materials (BOM)

28 components, 13 distinct parts — part numbers from the project's BOM.

Qty	Part	Footprint	Refs
1	blackpill_STM32F401CEUx	blackpill_module	U1
2	ACS70331EESATR-2P5B3 ACS70331	Allegro_QFN-12-10-1EP_3x3mm_P0.5mm	U2, U3
1	AT24C02D-SSHM-T M24C02-FMN	SOIC-8_3.9x4.9mm_P1.27mm	U4
1	Stepper_Motor_bipolar	null_footprint	M1
2	Conn_01x04_Male	connector_4pins_horizontal	J1, J2
1	Conn_01x40_Female	FPC_connector_40P_1.0mm	J3
1	Conn_02x20_Odd_Even	PinSocket_2x20_P2.54mm_Vertical	J4
7	TestPoint	testpoint	TP1, TP2, TP3, TP4, TP5, TP6, TP7
3	LED	LED_0603_1608Metric_Pad1.05x0.95mm_HandSolder	D1, D2, D3
3	100NF 100nf	C_0603_1608Metric_Pad1.08x0.95mm_HandSolder	C1, C2, C3
2	10UF 10uf	C_0603_1608Metric_Pad1.08x0.95mm_HandSolder	C4, C5
1	10K 10k	R_0603_1608Metric_Pad1.05x0.95mm_HandSolder	R1
3	3K3 3k3	R_0603_1608Metric_Pad1.05x0.95mm_HandSolder	R2, R3, R4

Legacy stepper motor analyzer design files

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

Layoutkicad/stepper_analyzer.kicad_pcb
BOMkicad/BOM.xlsx

Legacy stepper motor analyzer: common questions

How big is the Legacy stepper motor analyzer PCB?

The Legacy stepper motor analyzer measures 96.7 × 66.4 mm, has 2 copper layers and is 1.6 mm thick.

How many components are on the Legacy stepper motor analyzer?

28 components, from 13 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 Legacy stepper motor analyzer design files?

From the zapta/legacy_stepper_motor_analyzer repository on GitHub, which has the KiCad layout and the BOM; the links under Design files point to each one.

Can I use the Legacy stepper motor analyzer design in my own project?

Yes, under the terms of its CC0-1.0 license, which zapta chose for the repository.

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