HardLabs

Louwii pad

LouWii·louwii-pad·pcb/louwii-pad.kicad_pcb

Louwii pad PCB layout, top view — open source AVR/Arduino board by LouWii

About the Louwii pad PCB

Louwii pad is an open source AVR/Arduino PCB design by LouWii, published on GitHub. It is a 2-layer board measuring 88 × 106 mm, with 46 components from 17 distinct parts.

Its main chip is the ATmega32U4-atmel, from the AVR/Arduino family. By type, the board carries 8 relays, 8 diodes, 8 capacitors, 6 resistors, 3 connectors and 1 IC.

It belongs with the keyboards and displays & leds designs in this gallery.

From the project

Macro pad with 6 encoders, 8 switches, and an OLED screen

Very basic USB macro pad for tinkering and experimenting.

ruiqimao's tutorial Arisu cpm43 Gtrx0/Keyboard-template-atmega32u4

Flash a bootloader, set the chip fuses: See doc

Louwii pad, from the project README
From the project README

Main components on the Louwii pad

ATmega32U4-atmel

Louwii pad bill of materials (BOM)

46 components, 17 distinct parts.

QtyPartRefs
1
ATmega32U4-atmel
U1
1
16Mhz
X1
1
USB_B_Mini
J1
1
ICSP
J2
1
IIC
J3
8
KEYSW
K1, K2, K3, K4, K5, K6, K7, K8
4
WS2812B
RGB1, RGB2, RGB3, RGB4
6
Rotary_Encoder_Switch
RSW1, RSW2, RSW3, RSW4, RSW5, RSW6
1
SW_Push
SW1
8
D
D1, D2, D3, D4, D5, D6, D7, D8
2
22pF
C1, C2
1
1uF
C3
4
0.1uF
C4, C5, C6, C7
1
4.7uF
C8
2
10K
R1, R2
2
22
R3, R4
2
4.7k
R5, R6

Louwii pad design files

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

Louwii pad: common questions

What microcontroller does the Louwii pad use?

The Louwii pad is built around the ATmega32U4-atmel, from the AVR/Arduino family.

How big is the Louwii pad PCB?

The Louwii pad measures 88 × 106 mm, has 2 copper layers and is 1.6 mm thick.

How many components are on the Louwii pad?

46 components, from 17 distinct parts. The full bill of materials is listed on this page.

Where can I download the Louwii pad design files?

From the LouWii/louwii-pad repository on GitHub, which has the KiCad layout; the links under Design files point to each one.

Can I use the Louwii pad design in my own project?

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

Can I test firmware for the Louwii pad 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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