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Upet wifi

fachat·upet_wifi·Board/UPET-Wifi.kicad_pcb

Upet wifi PCB layout, top view — open source ESP32 board by fachat
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About the Upet wifi PCB

Upet wifi is an open source ESP32 PCB design by fachat, published on GitHub. It is a 2-layer board measuring 56.4 × 25.4 mm, with 19 components from 14 distinct parts.

Its main chip is the 356-ESP32WRVE22864PC, from the ESP32 family. Other key parts include the 771-SC16IS752IPW, 972-LH736001.843200I and uPET NET SPI. By type, the board carries 6 resistors, 4 ICs, 4 capacitors, 2 transistors, 2 connectors and 1 diode.

It belongs with the iot & wireless and dev boards & breakouts designs in this gallery.

From the project

Wifi breakout module for the Micro-PET, Ultra-CPU, and Ulti-PET

This is part of a larger project with multiple boards, with upet_family as parent repository.

This module implements a Wifi module for the Micro-PET, the Ultra-CPU, and the Ulti-PET. These boards provide an SPI-based breakout connector, which this module plugs in to.

The Wifi-Module used is an ESP32-C3-WROOM-02 module that uses two serial (rs232 on 3.3V TTL level) interfaces - one for firmware updates and logs, the other for the AT commands used to control the communication. To connect to the main board, this breakout board uses a dual-UART SC16IS752 that has an SPI interface to control it.

Upet wifi, from the project README
From the project README

Main components on the Upet wifi

771-SC16IS752IPW972-LH736001.843200I356-ESP32WRVE22864PCuPET NET SPI

Upet wifi bill of materials (BOM)

19 components, 14 distinct parts — part numbers from the project's BOM.

QtyPartRefs
1
771-SC16IS752IPW
SC16IS752IPW
U2
1
972-LH736001.843200I
1.8432 MHz
U3
1
356-ESP32WRVE22864PC
ESP32-WROVER-E
U4
1
uPET NET SPI
U$1
2
833-MMSS8050-H-TP
S8050
Q1, Q2
1
Conn_01x06
J1
1
Conn_01x09
J3
1
78-1N4148W-HE3_A-18
1N4148W
D1
3
710-885012206020
0.1u
C1, C2, C3
1
187-CL10A106KQ8NNNL
10u
C4
2
660-SG73S1JTTD103J
10k
R1, R4
1
652-CR0603AFX1001ELF
1k
R2
1
708-RMCF0603JT1K50
1k5
R3
2
660-RK73B1JTTDD123J
12k
R5, R6

Upet wifi design files

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

Upet wifi: common questions

What microcontroller does the Upet wifi use?

The Upet wifi is built around the 356-ESP32WRVE22864PC, from the ESP32 family.

How big is the Upet wifi PCB?

The Upet wifi measures 56.4 × 25.4 mm, has 2 copper layers and is 1.6 mm thick.

How many components are on the Upet wifi?

19 components, from 14 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 Upet wifi design files?

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

Can I use the Upet wifi design in my own project?

The repository has no license, so all rights stay with fachat. Use it as a reference, and ask the author before reusing the design.

Can I test firmware for the Upet wifi without the hardware?

Yes. HardLabs builds a simulation of the board from its netlist and BOM, so you can run and debug ESP32 firmware against it before you order a PCB.

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