HardLabs

Twostep hardware

macpod·twostep_hardware

Twostep hardware PCB layout, top view — open source AVR/Arduino board by macpod

About the Twostep hardware PCB

Twostep hardware is an open source AVR/Arduino PCB design by macpod, published on GitHub. It is a 2-layer board measuring 80 × 55 mm, with 67 components from 34 distinct parts.

Its main chip is the ATXMEGA16E5-AU, from the AVR/Arduino family. Other key parts include the LM2674MX-3.3, A4982 and SI8621. By type, the board carries 24 capacitors, 16 resistors, 12 jumpers, 5 ICs, 2 switches and 2 diodes.

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

From the project

TwoStep stepper motor controller board hardware

More general and purchasing information is avaliable here: http://macpod.net/electronics/twostep/twostep.php

Main components on the Twostep hardware

LM2674MX-3.3ATXMEGA16E5-AUA4982SI8621

Twostep hardware bill of materials (BOM)

67 components, 34 distinct parts.

QtyPartRefs
1
LM2674MX-3.3
U1
1
ATXMEGA16E5-AU
U2
2
A4982
U3, U4
1
SI8621
U5
1
16Mhz
Y1
1
R1_A
JP1
1
R1_B
JP2
1
R2_A
JP3
1
R2_B
JP4
1
UART_LS
JP5
1
LS_PWR
JP6
1
M1
JP7
1
MOT_PWR
JP8
1
AVR_PDI
JP10
1
M2
JP11
1
UART_FTDI
JP12
1
LS_VCC
JP13
4
STANDOFF
MP1, MP2, MP3, MP4
1
RESET
S1
1
CFG
S2
Show 14 more
QtyPartRefs
1
B160-13-F
D1
1
USR_LED
D2
1
470uH
L1
1
10uF
C1
1
10000pF
C2
13
0.1uF
C3, C7, C8, C13, C14, C15, C16, C17 +5
1
1uF
C4
2
NP
C6, C25
2
15pF
C9, C12
2
0.22uF
C10, C11
2
100uF
C21, C22
11
10K
R1, R3, R4, R5, R6, R7, R8, R9 +3
1
1K
R2
4
0.05
R13, R14, R15, R16

Twostep hardware design files

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

Twostep hardware: common questions

What microcontroller does the Twostep hardware use?

The Twostep hardware is built around the ATXMEGA16E5-AU, from the AVR/Arduino family.

How big is the Twostep hardware PCB?

The Twostep hardware measures 80 × 55 mm, has 2 copper layers and is 1.6 mm thick.

How many components are on the Twostep hardware?

67 components, from 34 distinct parts. The full bill of materials is listed on this page.

Where can I download the Twostep hardware design files?

From the macpod/twostep_hardware repository on GitHub, which has the KiCad layout; the links under Design files point to each one.

Can I use the Twostep hardware design in my own project?

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

Can I test firmware for the Twostep hardware 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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