HardLabs

The-Armadillo

sbbxiii·The-Armadillo·hardware/ATmega_TMC2209_Driver.kicad_pcb

The-Armadillo PCB layout, top view — open source AVR/Arduino board by sbbxiii

About the The-Armadillo PCB

The-Armadillo is an open source AVR/Arduino PCB design by sbbxiii, published on GitHub under the MIT license. It is a 4-layer board measuring 60 × 60 mm, with 49 components from 25 distinct parts.

Its main chip is the ATmega328P-A, from the AVR/Arduino family. Other key parts include the CH340K, TMC2209-LA and NCP1117-5.0_SOT223. By type, the board carries 20 capacitors, 12 resistors, 8 connectors, 4 ICs, 3 diodes and 1 crystal.

It belongs with the robotics & motion, sensors and usb & debug tools designs in this gallery.

From the project

The Armadillo: Custom Arduino-compatible ATmega328P stepper motor controller PCB with Trinamic TMC2209 silent driver and single-wire UART

The Armadillo is an open-source, Arduino-compatible motion control PCB designed from first principles in KiCad 10.0.1. It pairs the reliable Microchip ATmega328P 8-bit AVR microcontroller with the high-performance Trinamic TMC2209-LA silent bipolar stepper motor driver on a rugged $60.0\text{ mm} \times 60.0\text{ mm}$ 2-layer FR-4 board.

Featuring an onboard WCH CH340K USB-to-UART converter with automated DTR auto-reset, The Armadillo provides seamless plug-and-play programming directly through the Arduino IDE, PlatformIO, or AVR-GCC toolchains. Key features include silent stepper motion…

The-Armadillo, from the project README
From the project README

Main components on the The-Armadillo

ATmega328P-ACH340KTMC2209-LANCP1117-5.0_SOT223

The-Armadillo bill of materials (BOM)

49 components, 25 distinct parts.

QtyPartRefs
1
ATmega328P-A
U1
1
CH340K
U2
1
TMC2209-LA
U3
1
NCP1117-5.0_SOT223
U4
1
16MHz
Y1
1
ISP
J1
1
USB_B
J2
1
J_IN3
J3
1
J_IN4
J4
1
J_IN1
J5
1
J_IN2
J6
1
Output_Phases
J7
1
Power_Input
J8
1
Reset_Button
SW1
1
POWER_LED
D1
1
DIAGNOSTIC
D2
1
SS14
D3
16
100nF
C1, C3, C4, C5, C7, C8, C9, C10 +8
2
22pF
C2, C6
1
4.7uF
C17
Show 5 more
QtyPartRefs
1
100uF
C19
1
10kΩ
R1
5
1kΩ
R2, R3, R10, R11, R12
4
R_FILTER 1.5kΩ
R6, R7, R8, R9
2
0.11Ω
R13, R14

The-Armadillo design files

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

The-Armadillo: common questions

What microcontroller does the The-Armadillo use?

The The-Armadillo is built around the ATmega328P-A, from the AVR/Arduino family.

How big is the The-Armadillo PCB?

The The-Armadillo measures 60 × 60 mm, has 4 copper layers and is 1.6 mm thick.

How many components are on the The-Armadillo?

49 components, from 25 distinct parts. The full bill of materials is listed on this page.

Where can I download the The-Armadillo design files?

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

Can I use the The-Armadillo design in my own project?

Yes, under the terms of its MIT license, which sbbxiii chose for the repository.

Can I test firmware for the The-Armadillo 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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