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Arduino UNO R4 WiFi

sabogalc·KiCad-Arduino-Boards·KiCad Projects/Uno/Arduino UNO R4 WiFi/Arduino UNO R4 WiFi.kicad_pcb

Arduino UNO R4 WiFi PCB layout, top view — open source AVR/Arduino board by sabogalc

About the Arduino UNO R4 WiFi PCB

Arduino UNO R4 WiFi is an open source AVR/Arduino PCB design by sabogalc, published on GitHub under the WTFPL license. It is a 4-layer board measuring 68.6 × 53.3 mm, with 217 components from 42 distinct parts.

Its main chip is the R7FA4M1AB3CFM#AA0, from the AVR/Arduino family. Other key parts include the TS5A3159ADCK, ISL854102FRZ-T, TXB0108DQSR and AP7361C-33E. By type, the board carries 99 diodes, 60 resistors, 28 capacitors, 10 connectors, 6 ICs and 4 LEDs.

It belongs with the iot & wireless designs in this gallery.

From the project

A collection of Arduino boards recreated from scratch in KiCad. Legacy USB connectors have been replaced with USB-C where applicable.

As soon as I saw the 96 LED array on this board, I knew that I would be in for some work, and of all the boards in this repository, this is the only one that I am not confident would pass a fabricator's specifications. I will highlight the parts of this board that I think may be problematic below.

Firstly, the 3.3V fuse is extremely close to a GND pad on the USB-C port, which could be a possible weak point for a 3.3V short to GND to happen.

Main components on the Arduino UNO R4 WiFi

R7FA4M1AB3CFM#AA0TS5A3159ADCKISL854102FRZ-TTXB0108DQSRAP7361C-33E

Arduino UNO R4 WiFi bill of materials (BOM)

217 components, 42 distinct parts.

QtyPartRefs
1
R7FA4M1AB3CFM#AA0
U1
2
TS5A3159ADCK
U2, U6
1
ISL854102FRZ-T
U3
1
TXB0108DQSR
U4
1
AP7361C-33E
U5
1
ESP32-S3-MINI-1-N8
M1
3
2N7002KT1G
Q1, Q2, Q3
1
USB_C_Receptacle_USB2.0_16P
J1
1
SM04B-SRSS-TB(LF)(SN)
J2
2
M20-9980345
J3, J6
2
PPTC081LFBN-RC
J4, J9
1
PJ-102AH
J5
1
PPTC061LFBN-RC
J7
1
PPTC101LFBN-RC
J8
1
M20-9990345
J10
1
MF-MSMF050-2-W2
F1
1
TS06-667-30-BK-100-G-SMT-TR
S1
1
TestPoint
TP9
3
NTE30007
DL1, DL2, DL4
1
HSMG-C190
DL3
Show 22 more
QtyPartRefs
96
QBLP601-R5
D01, D02, D03, D4, D5, D6, D7, D8 +88
2
PMEG6020AELRX
D1, D2
1
PRTR5V0U2X,215
D3
2
BLM18PG471SN1D
L1, L2
1
10uH 2.3A
L3
1
DNP
C1
3
4.7u
C2, C5, C9
9
100n
C3, C7, C8, C11, C12, C25, C26, C29 +1
3
1u
C6, C20, C24
8
22u
C10, C13, C15, C16, C17, C18, C19, C28
1
33p
C14
1
4.7n
C21
1
1n
C22
1
100p
C23
17
100k
R1, R3, R26, R35, R38, R43, R44, R45 +9
16
330R
R2, R14, R16, R20, R22, R23, R24, R25 +8
14
5.1k
R4, R5, R6, R7, R8, R9, R10, R11 +6
5
0
R17, R18, R36, R37, R42
4
0R
R21, R53, R54, R55
1
1M
R39
2
13.7k
R40, R60
1
249k
R41

Arduino UNO R4 WiFi design files

The KiCad project lives in the sabogalc/KiCad-Arduino-Boards repository on GitHub; these links point at the commit this page was built from.

Arduino UNO R4 WiFi: common questions

What microcontroller does the Arduino UNO R4 WiFi use?

The Arduino UNO R4 WiFi is built around the R7FA4M1AB3CFM#AA0, from the AVR/Arduino family.

How big is the Arduino UNO R4 WiFi PCB?

The Arduino UNO R4 WiFi measures 68.6 × 53.3 mm, has 4 copper layers and is 1.6 mm thick.

How many components are on the Arduino UNO R4 WiFi?

217 components, from 42 distinct parts. The full bill of materials is listed on this page.

Where can I download the Arduino UNO R4 WiFi design files?

From the sabogalc/KiCad-Arduino-Boards repository on GitHub, which has the KiCad layout and the schematic; the links under Design files point to each one.

Can I use the Arduino UNO R4 WiFi design in my own project?

Yes, under the terms of its WTFPL license, which sabogalc chose for the repository.

Can I test firmware for the Arduino UNO R4 WiFi 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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