2 layers21.2 × 77.6 mm ESPFridge, the printed circuit board in 3D

ESPFridge

Ehryk/ehryk.github.com2

Code

Size: 21.2 × 77.6 mm
Copper layers: 2
Thickness: 1.6 mm
Parts: 30
Nets: 28
Pads: 128
Tracks, vias: 311, 73
Pours: 29
Routed: Yes
KiCad: KiCad 10.0 (file 20260206)
Created: 9 Dec 2011
Updated: 24 Aug 2026

Overview

ESPFridge is an open-source printed circuit board by Ehryk, from the Ehryk/ehryk.github.com repository on GitHub. It is a 2-layer board of 21.2 × 77.6 mm with 30 parts on 28 nets, routed with 311 tracks and 73 vias.

It is built around the ESP32-C3-WROOM-02-H4, OPT3001DNPRQ1 and DW01A, with the AO3401A and MMBT3904 among its other parts. Its parts include 10 resistors, 9 capacitors, 6 ICs, 2 transistors and 1 diode. It belongs with the ESP32 and RISC-V boards of this library.

Main components

README

README.md

ehryk.github.com

This is my github pages repo, viewable at ehryk.github.io. It also has some setup files that I sync between various computers, most notably git and bash aliases.

Github Pages (/, /js, /css, /img)

xkcd 1288 Substitutions Bookmarklet

/linux && /git

These are the settings I sync between various computers. Update Config.bat for windows, update-config.sh for linux.

/rainmeter

Custom Rainmeter skins for GPU and CPU temps, etc.

/brian

Brian's Stuff. See more at Dr. Bird.org

Parts

Qty	Value	Footprint	References
7	0.1µF	Capacitor_SMD:C_1206_3216Metric_Pad1.33x1.80mm_HandSolder	C1, C2, C4, C5, C7, C8, C9
3	10kΩ	Resistor_SMD:R_0805_2012Metric_Pad1.20x1.40mm_HandSolder	R5, R6, R11
3	4.7kΩ	Resistor_SMD:R_0805_2012Metric_Pad1.20x1.40mm_HandSolder	R2, R3, R4
2	10µF	Capacitor_SMD:C_1210_3225Metric_Pad1.33x2.70mm_HandSolder	C3, C6
1	2.2kΩ	Resistor_SMD:R_0805_2012Metric_Pad1.20x1.40mm_HandSolder	R10
1	220kΩ	Resistor_SMD:R_0805_2012Metric_Pad1.20x1.40mm_HandSolder	R7
1	470kΩ	Resistor_SMD:R_0805_2012Metric_Pad1.20x1.40mm_HandSolder	R8
1	47kΩ	Resistor_SMD:R_0805_2012Metric_Pad1.20x1.40mm_HandSolder	R9
1	8205A	Ehryk:SOT95P285X140-6N	U3
1	AO3401A	Package_TO_SOT_SMD:SOT-23	Q1
1	Battery_Cell	Ehryk:Keystone_1043	BT1
1	Conn_01x06_Socket	Connector_PinSocket_2.00mm:PinSocket_1x06_P2.00mm_Vertical_SMD_Pin1Left	J1
1	DW01A	Package_TO_SOT_SMD:SOT-23-6	U2
1	ESP32-C3-WROOM-02	RF_Module:ESP32-C3-WROOM-02	U1
1	MCP1700x-330xxTT	Package_TO_SOT_SMD:SOT-23	U5
1	MMBT3904	Package_TO_SOT_SMD:SOT-23	Q2
1	OPT3001DNPRQ1	Ehryk:SON65P200X200X65-7N	U4
1	RED	LED_SMD:LED_0805_2012Metric_Pad1.15x1.40mm_HandSolder	D1
1	TMP117xxDRV	Package_SON:WSON-6-1EP_2x2mm_P0.65mm_EP1x1.6mm	U6

Questions

How big is the ESPFridge PCB?

It measures 21.2 × 77.6 mm and has 2 copper layers, 1.6 mm thick.

What parts does the ESPFridge use?

30 parts, built around the ESP32-C3-WROOM-02-H4, OPT3001DNPRQ1, DW01A and AO3401A. The full list of its parts is on this page, with links to each part's symbol and footprint where PCBKit's library has them.

Where can I download the ESPFridge KiCad files?

From the Ehryk/ehryk.github.com repository on GitHub, at the commit this page was made from: the board is Circuits/ESPFridge/ESPFridge.kicad_pcb. PCBKit opens the board in the browser, with nothing to install.

Can I use the ESPFridge design in my own project?

Its repository states no licence, so its author keeps all rights: ask Ehryk before reusing the design.

Category and platform

ESP32 RISC-V

Project files

Show this board on your page

A live frame, for any web page

<iframe src="https://pcbkit.io/embed/boards/ehryk-ehryk-github-com-espfridge" title="ESPFridge in PCBKit" width="100%" height="480" style="border:0;border-radius:12px" allow="fullscreen" loading="lazy"></iframe>

A picture

<img src="https://pcbkit.io/embed/boards/ehryk-ehryk-github-com-espfridge.jpg" alt="ESPFridge" width="1200" height="900">

A picture that opens the board, for a README

[![ESPFridge](https://pcbkit.io/embed/boards/ehryk-ehryk-github-com-espfridge.jpg?size=s)](https://pcbkit.io/boards/ehryk-ehryk-github-com-espfridge)

Source

Repository: Ehryk/ehryk.github.com
Board file: Circuits/ESPFridge/ESPFridge.kicad_pcb
Commit: fd848c3
Homepage: code.ehryk.com
Licence: Not stated

Similar boards

4 layers40 × 58 mm
STM32-S Plant
Fred98246/STM32-Environmental-Sensor-and-Datalogging-Board
An open-source STM32F103C8T6 development board designed for environmental monitoring, featuring integrated Li-Ion battery management, USB-C, MicroSD data logging, and onboard I2C sensors for temperature, humidity, and…
59 parts2MIT
2 layers45 × 45 mm
Watch
DINDIN2007/Blystwatch
This is a demo board to showcase development with both the BlystL15 (based on the nrf54L15) and the IOComposer AI from I-Syst.inc.
47 parts
4 layers90 × 98 mm
Convention badge pcb v2
BrandonFors/convention_pcb_badge
Design for a custom pcb badge for opensauce convention and maybe other conventions in the future.
57 parts
2 layers42 × 116 mm
Drink water
heidtn/drinkmoarwater

51 partsMIT
2 layers32.1 × 47 mm
Clickfy
Wudker/Clickfy
Compact ESP32-C3 based BLE multimedia remote with custom PCB, battery monitoring and low-power operation.
59 parts
2 layers45 × 100 mm
Walkiepcb
houseofthe051010/ESP32-Walkie-Talkie-V2
This ESP32 Walkie Talkie is redesigned with a SX1262 radio, a PCB, and a full case redesign.
93 parts1
2 layers62 × 6 mm
TableLight
jonny190/TableLight
A 3D-printable, battery-powered, USB-C rechargeable table lamp in the classic "Poldina" shape - honeycomb disc base, thin stem, down-firing cone shade with a white top - running WLED on an ESP32, with a capacitive touch…
72 partsMIT
2 layers118.3 × 68 mm
Field eyes v2.before spreading
louismomo66/field-eyes_pcb
Open fieldeyesv2.kicadpro in KiCad 9. The whole circuit is one flat schematic (fieldeyesv2.kicadsch): all 168 parts are on a single page, in four framed sections.
168 parts