HardLabs

LCD HAT

bitbank2·KiCad_Projects·LCD_HAT/LCD_HAT.kicad_pcb

LCD HAT layout, top view — open source AVR/Arduino board by bitbank2

About the LCD HAT

LCD HAT is an open source AVR/Arduino PCB design by bitbank2, published on GitHub under the Apache-2.0 license. It is a 2-layer board measuring 45.7 × 53.4 mm, with 11 components from 8 distinct parts.

Its main chip is the Arduino_Nano_v3.x, from the AVR/Arduino family. Other key parts include the Adafruit_Feather_Generic. By type, the board carries 4 connectors, 3 resistors, 2 modules and 2 switches.

It belongs with the dev boards & breakouts and displays & leds designs in this gallery.

From the project

A place to share all of my PCB projects

LCD_HAT ----------------------------------- Copyright (c) 2023 BitBank Software, Inc. bitbank@pobox.com A simple PCB to easily connect LCD breakout boards to Arduino Nano or Feather MCU boards. Includes 2 momentary push buttons and Qwiic I2C connector. The GPIOs used for the LCD connection are marked next to the female header. Likewise the buttons. This photo shows an Arduino Nano RP2040 Connect and UnexpectedMaker FeatherS3 both using the same board and 2 types of LCDs supported with this pinout:

Main components on the LCD HAT

Adafruit_Feather_GenericArduino_Nano_v3.x

LCD HAT bill of materials (BOM)

11 components, 8 distinct parts.

QtyPartRefs
1
Adafruit_Feather_Generic
A1
1
Arduino_Nano_v3.x
A2
1
Qwiic
J1
1
LCD
J2
2
PWR_JUMPER
J3, J4
2
SW_Push
SW1, SW2
2
10k
R1, R2
1
68K
R3

LCD HAT design files

The KiCad project lives in the bitbank2/KiCad_Projects repository on GitHub; these links point at the commit this page was built from.

LCD HAT: common questions

What microcontroller does the LCD HAT use?

The LCD HAT is built around the Arduino_Nano_v3.x, from the AVR/Arduino family.

How big is the LCD HAT?

The LCD HAT measures 45.7 × 53.4 mm, has 2 copper layers and is 1.6 mm thick.

How many components are on the LCD HAT?

11 components, from 8 distinct parts. The full bill of materials is listed on this page.

Where can I download the LCD HAT design files?

From the bitbank2/KiCad_Projects repository on GitHub, which has the KiCad layout and the schematic; the links under Design files point to each one.

Can I use the LCD HAT design in my own project?

Yes, under the terms of its Apache-2.0 license, which bitbank2 chose for the repository.

Can I test firmware for the LCD HAT 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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