HardLabs

MotorSpeedController

sdsmt-robotics·MotorSpeedController·Hardware/MotorSpeedController.kicad_pcb

MotorSpeedController PCB layout, top view — open source AVR/Arduino board by sdsmt-robotics

About the MotorSpeedController PCB

MotorSpeedController is an open source AVR/Arduino PCB design by sdsmt-robotics, published on GitHub. It is a 2-layer board measuring 42 × 42 mm, with 21 components from 13 distinct parts.

Its main chip is the ATmega328P-AU, from the AVR/Arduino family. Other key parts include the AS5134 and MC7805. By type, the board carries 9 capacitors, 3 ICs, 3 diodes, 3 resistors, 2 connectors and 1 crystal.

From the project

The SS pin must be used for at least one* of the connections. Additional speed controllers may use other digital IO pins.

The SS pin must be used for at least one* of the connections. Additional speed controllers may use other digital IO pins.

SPI - the SPI singleton object from the SPI.h library. ssPin - pin to use as chip select. Should simply be SS for first controller.

Initialize: Create an instance of the class.

setup() { ... // Init SPI SPI.begin (); SPI.setClockDivider(SPICLOCKDIV4);

Main components on the MotorSpeedController

ATmega328P-AUAS5134MC7805

MotorSpeedController bill of materials (BOM)

21 components, 13 distinct parts.

QtyPartRefs
1
ATmega328P-AU
U1
1
AS5134
U2
1
MC7805
U3
1
16MHz
Y1
1
Conn_01x08_Female
J1
1
Conn_01x05_Female
J2
2
LED_Small_ALT
D1, D2
1
D_Small
D3
2
1uF
C1, C9
2
22pF
C2, C4
5
0.1uF
C3, C5, C6, C7, C8
1
1k
R1
2
10k
R2, R3

MotorSpeedController design files

The KiCad project lives in the sdsmt-robotics/MotorSpeedController repository on GitHub; these links point at the commit this page was built from.

MotorSpeedController: common questions

What microcontroller does the MotorSpeedController use?

The MotorSpeedController is built around the ATmega328P-AU, from the AVR/Arduino family.

How big is the MotorSpeedController PCB?

The MotorSpeedController measures 42 × 42 mm, has 2 copper layers and is 0.8 mm thick.

How many components are on the MotorSpeedController?

21 components, from 13 distinct parts. The full bill of materials is listed on this page.

Where can I download the MotorSpeedController design files?

From the sdsmt-robotics/MotorSpeedController repository on GitHub, which has the KiCad layout and the schematic; the links under Design files point to each one.

Can I use the MotorSpeedController design in my own project?

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

Can I test firmware for the MotorSpeedController 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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