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Display

directionizer·df-pcb·display/display.kicad_pcb

Display PCB layout, top view — open source AVR/Arduino board by directionizer

About the Display PCB

Display is an open source AVR/Arduino PCB design by directionizer, published on GitHub under the GPL-3.0 license. It is a 2-layer board measuring 64 × 64 mm, with 40 components from 18 distinct parts.

Its main chip is the ATMEGA328P-AU, from the AVR/Arduino family. Other key parts include the CH340G. By type, the board carries 16 diodes, 16 resistors, 3 connectors, 3 microphones and 2 ICs.

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

From the project

Schematics and design files for a handheld device to locate an audio beacon

Directionizer is a student project by Mason Ahner, Jared Beller, and John Fiorini for the spring 2021 session of ECE 2804 at Virginia Tech. The "directionizer" is a handheld device for locating a 1 kHz audio beacon. This repository contains KiCad schematics and PCBs for the directionizer hardware.

The original design made during prototyping can be found in schematic. This was broken into three individual boards, which are stacked to form the final device. From bottom to top, the boards are processing, audio, and display. Each board's schematic and layout is in it's respective folder. For…

Main components on the Display

CH340GATMEGA328P-AU

Display bill of materials (BOM)

40 components, 18 distinct parts — part numbers from the project's BOM.

QtyPartRefs
1
CH340G
74HC238
U1
1
ATMEGA328P-AU
74HC238
U2
1
Conn_01x02
J1
1
Conn_01x03
J2
1
Conn_01x05
J3
3
Microphone
MK1, MK2, MK3
16
LED_Small
D1, D2, D3, D4, D5, D6, D7, D8 +8
2
5.1K
220k
R1, R2
2
12K
220k
R3, R12
1
8.2K
220k
R4
2
220k
R5, R9
1
10K
220k
R6
3
100K
220k
R7, R8, R16
1
5.6K
220k
R10
1
430K
220k
R11
1
220K
220k
R13
1
51K
220k
R14
1
2.7K
220k
R15

Display design files

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

Display: common questions

What microcontroller does the Display use?

The Display is built around the ATMEGA328P-AU, from the AVR/Arduino family.

How big is the Display PCB?

The Display measures 64 × 64 mm, has 2 copper layers and is 1.6 mm thick.

How many components are on the Display?

40 components, from 18 distinct parts, with part numbers taken from the project's own BOM. The full bill of materials is listed on this page.

Where can I download the Display design files?

From the directionizer/df-pcb repository on GitHub, which has the KiCad layout and the BOM; the links under Design files point to each one.

Can I use the Display design in my own project?

Yes, under the terms of its GPL-3.0 license, which directionizer chose for the repository.

Can I test firmware for the Display 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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