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Panel

directionizer·df-pcb·panel/panel.kicad_pcb

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

About the Panel PCB

Panel 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 199.5 × 80 mm, with 120 components from 38 distinct parts.

Its main chip is the ATMEGA328P-AU, from the AVR/Arduino family. Other key parts include the CH340G, LM324DT and 74HC238. By type, the board carries 51 resistors, 34 capacitors, 16 diodes, 6 ICs, 5 connectors and 3 microphones.

It belongs with the audio 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 Panel

CH340GATMEGA328P-AULM324DT74HC238

Panel bill of materials (BOM)

120 components, 38 distinct parts — part numbers from the project's BOM.

QtyPartRefs
1
CH340G
U1
1
ATMEGA328P-AU
ATmega328P-AU
U2
2
LM324DT
U3, U4
2
74HC238
U5, U6
1
12MHZ
12MHz
Y1
1
16MHZ
16MHz
Y2
1
Conn_01x02
J1
1
Conn_01x03
J2
1
Conn_01x05
J3
1
TYPE-C-31-M-12
HRO-TYPE-C-31-M-12
J4
1
ICSP
J5
1
500mA
F1
3
Microphone
MK1, MK2, MK3
1
SW_RESET
SW1
3
D_Schottky_Small
D1, D2, D3
13
LED_Small
D4, D5, D6, D7, D8, D9, D10, D11 +5
1
10UH
10uH
L1
7
22PF
22pF
C1, C3, C9, C10, C15, C21, C27
1
10NF
10nF
C2
9
100NF
100nF
C4, C5, C6, C7, C8, C11, C12, C33 +1
Show 18 more
QtyPartRefs
10
2.2UF
2.2uF
C13, C17, C19, C20, C23, C25, C26, C29 +2
1
10UF
10uF
C14
6
4.7NF
4.7nF
C16, C18, C22, C24, C28, C30
2
5.1K
5.1k
R1, R2
4
12K
12k
R3, R12, R21, R30
1
8.2K
8.2k
R4
4
1M
R5, R9, R18, R27
1
10K
10k
R6
5
100K
100k
R7, R8, R16, R25, R34
3
5.6K
5.6k
R10, R19, R28
3
430K
430k
R11, R20, R29
3
220K
220k
R13, R22, R31
3
51K
51k
R14, R23, R32
3
2.7K
2.7k
R15, R24, R33
3
3k
R17, R26, R35
1
680R
680
R36
12
390R
390
R37, R38, R39, R41, R42, R43, R45, R46 +4
3
330R
330
R40, R44, R48

Panel 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.

Panel: common questions

What microcontroller does the Panel use?

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

How big is the Panel PCB?

The Panel measures 199.5 × 80 mm, has 2 copper layers and is 1.6 mm thick.

How many components are on the Panel?

120 components, from 38 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 Panel 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 Panel 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 Panel 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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