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V usb businesscard

AndersBNielsen·v-usb-businesscard·KiCAD/BusinessCard-t84/tinyRF24.kicad_pcb

V usb businesscard PCB layout, top view — open source AVR/Arduino board by AndersBNielsen

About the V usb businesscard PCB

V usb businesscard is an open source AVR/Arduino PCB design by AndersBNielsen, published on GitHub under the GPL-3.0 license. It is a 2-layer board measuring 85 × 54 mm, with 31 components from 18 distinct parts.

Its main chip is the ATTINY84A-SSU, from the AVR/Arduino family. Other key parts include the MIC5504-3.3YM5 and NRF24L01_Breakout. By type, the board carries 11 capacitors, 5 LEDs, 5 resistors, 3 ICs, 3 connectors and 3 diodes.

From the project

ATTiny84 V-USB Business card

Read the full description here: https://abnielsen.com/2018/10/02/business-card-rf24-ws2812b-attiny84-usb/

This project contains KiCad schematics and board layouts, modified versions of the RF24 nRF24L01+ library (https://github.com/nRF24/RF24) and Adafruit's TrinketHidCombo library (https://github.com/adafruit/Adafruit-Trinket-USB/tree/master/TrinketHidCombo) to work with the ATTiny84 with a 16mhz crystal.

V usb businesscard, from the project README
From the project README

Main components on the V usb businesscard

MIC5504-3.3YM5ATTINY84A-SSUNRF24L01_Breakout

V usb businesscard bill of materials (BOM)

31 components, 18 distinct parts.

QtyPartRefs
1
MIC5504-3.3YM5
U1
1
ATTINY84A-SSU
U2
1
NRF24L01_Breakout
U3
1
16Mhz
Y1
1
USB_OTG
J1
1
Conn_02x03_Odd_Even
J2
1
Conn_01x20
J3
5
WS2812B
LED1, LED2, LED3, LED4, LED5
1
LED
D1
2
D_Zener
D2, D3
2
1uF
C1, C2
1
10uF
C3
6
100nF
C4, C7, C8, C9, C10, C11
2
18pF
C5, C6
1
220
R1
1
4k7
R2
2
68
R3, R4
1
2k2
R5

V usb businesscard design files

The KiCad project lives in the AndersBNielsen/v-usb-businesscard repository on GitHub; these links point at the commit this page was built from.

V usb businesscard: common questions

What microcontroller does the V usb businesscard use?

The V usb businesscard is built around the ATTINY84A-SSU, from the AVR/Arduino family.

How big is the V usb businesscard PCB?

The V usb businesscard measures 85 × 54 mm, has 2 copper layers and is 1.6 mm thick.

How many components are on the V usb businesscard?

31 components, from 18 distinct parts. The full bill of materials is listed on this page.

Where can I download the V usb businesscard design files?

From the AndersBNielsen/v-usb-businesscard repository on GitHub, which has the KiCad layout; the links under Design files point to each one.

Can I use the V usb businesscard design in my own project?

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

Can I test firmware for the V usb businesscard 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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