2 layers30.5 × 35.6 mm ESP32-H2-MINI-1-basic, the printed circuit board in 3D

ESP32-H2-MINI-1-basic

ESP32 Dev Boards PCB

Size: 30.5 × 35.6 mm
Copper layers: 2
Thickness: 1.6 mm
Parts: 42
Nets: 39
Pads: 190
Tracks, vias: 436, 89
Pours: 195
Routed: Yes
KiCad: KiCad 8.0 (file 20240108)
Created: 14 May 2022
Updated: 30 Dec 2025

Overview

ESP32-H2-MINI-1-basic is an open-source printed circuit board by 74th, from the 74th/esp32-dev-boards repository on GitHub, published under the MIT licence. It is a 2-layer board of 30.5 × 35.6 mm with 42 parts on 39 nets, routed with 436 tracks and 89 vias.

It is built around the AMS1117, ESP32-H2-MINI-1U and PMEG2010ER,115-JSM. Its parts include 9 capacitors, 8 resistors, 2 ICs, 2 diodes and 2 connectors. It belongs with the ESP32 and RISC-V boards of this library.

Main components

README

ESP32-C3-WROOM-02/README.md

ESP32-C3 Dev Board

ESP32-C3-WROOM-02 を使った開発ボード

10 ピンブレッドボードに挿しても、左右 1 ピン空いている
ESP-Prog の USB シリアル変換のボックスピンヘッダを持つ
USB Type-C をもつ

BOOTH でモジュール付きキットを販売中です。
https://74th.booth.pm/items/4378573

同じピン配置の以下のモジュールでも利用可能です。

ESP8684-WROOM-02C

v1.2.1

こちらのバージョンは発売していません。

変更点

GPIO20、GPIO21のUARTのU0RXD/U0TXDのシルクが逆になっていたのを修正

ドキュメント

回路図 kicanvas
PCB kicanvas

ピンマップ、部品表

v1.2.0 と同じです。そちらを参照ください。

v1.2.0

既知の不具合 Errata

UARTのTX0/RX0 のシルクの表示が逆になっています。"T"と書かれたピンがRX0、"R"と書かれたピンがTX0です。

GPIO20: U0RXD
GPIO21: U0TXD

変更点

USB DM/DP にダンピング抵抗を追加
電源にダイオードを追加
ESP-C3-DevKitC-02 互換の配置を止めた

ピンマップ

ドキュメント

回路図 pdf kicanvas
PCB pdf kicanvas

部品表

Reference	Name	Quantity
C1,C4,C7	Capacitor 0603 100nF	3
C2,C5,C6	Capacitor 0603 10uF	3
C3	Capacitor 0603 1uF	1
D1	LED 0805 LED	1
D2	Schottky barrier diode SOD-123W PMEG2010ER,115	1
J1	Box Pin Header 2x3 Pitch 1.27mm	1
J2	USB Type-C Receptacle	1
R1,R3	Register 0603 10kΩ	2
R2,R4	Register 0603 10Ω	2
R5	Register 0603 1kΩ	1
R6,R7	Register 0603 5.1kΩ	2
SW1,SW2	Button SKRPABE010	2
U1	WiFi MCU Module ESP32-C3-WROOM-02	1
U2	Regulator 3.3V SOT-223 AMS1117-3.3	1

v1.1.0

回路図 pdf kicanvas
PCB pdf kicanvas

部品表

指定子	名称	数量
R1	0805 レジスタ 1k	1
R2,R5	0805 レジスタ 10k	2
R3,R4	0805 レジスタ 5.1k	2
C1,C4,C6	0805 キャパシタ 10u	3
C2,C3,C7	0805 キャパシタ 100n	3
C5	0805 キャパシタ 1u	1
D1	0805 LED	1
J3	UART ボックスピンヘッダ 2.3 1.27mm ピッチ	1
J4	USB 2.0 Type-C ミッドマウントソケット	1
U1	3.3V レギュレータ AMS1117-3.3	1
U2	ESP32-C3-WROOM-02	1
SW1(EN)	プッシュスイッチ SKRPABE010(EN)	1
SW1(BOOT)	プッシュスイッチ SKRPABE010(BOOT)	1

ESP32-C3-WROOM-02 は非常に熱に弱いモジュールです。ボード裏面にはサーマルパッドをはんだづけするための穴が空いていますが、熱を与えすぎに注意してください。BOOTH のキットでは熱伝導テープを添付しています。カットして、モジュールに貼り付けて、青いテープ、透明テープを剥がして利用ください。モジュールが浮きすぎないように押さえつけて利用ください。

Parts

Qty	Value	Footprint	References
8	Hole_M2_2.0	74th:Hole_M2_2.0	M1, M1, M2, M2, M3, M3, M5, M5
4	10k	74th:Register_0603_1608	R3, R4, R5, R6
4	10u	74th:Capacitor_0603_1608	C1, C6, C8, C9
4	VAL**	74th:MouseBite_1.27mm_slot_half	mouse-bite-1, mouse-bite-1, mouse-bite-2, mouse-bite-2
2	0.1u	74th:Capacitor_0603_1608	C2, C7
2	10	74th:Register_0603_1608	R1, R2
2	12p	74th:Capacitor_0603_1608	C4, C5
2	5.1k	74th:Register_0603_1608	R7, R8
2	Pin_13	74th:PinOut_Pin_12	CH1, CH2
2	SW_Push	74th:Switch_SKRPABE010	SW1, SW2
1	1u	74th:Capacitor_0603_1608	C3
1	32k	74th:Crystal_SMD_3215-2Pin_3.2x1.5mm	Y1
1	AMS1117	74th:Package_SOT-89-3	U2
1	Blue	74th:LED_0805_2012	D1
1	ESP-Prog-ProgramCOM_RECV	74th:Connector_BoxPinHeader_2x03_P1.27mm	J1
1	ESP32-H2-MINI-1	PCM_Espressif:ESP32-H2-MINI-1	U1
1	LOGO	74th:Logo_74th_4mm	MISC-ICON
1	PMEG2010ER,115	74th:Package_SOD123W	D2
1	USB2.0-C_SMT	74th:Connector_USB-C-Receptacle_SMT_12-Pin_Simple	J2

The 41 most common of 42 parts.

Questions

How big is the ESP32-H2-MINI-1-basic PCB?

It measures 30.5 × 35.6 mm and has 2 copper layers, 1.6 mm thick.

What parts does the ESP32-H2-MINI-1-basic use?

42 parts, built around the AMS1117, ESP32-H2-MINI-1U and PMEG2010ER,115-JSM. 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 ESP32-H2-MINI-1-basic KiCad files?

From the 74th/esp32-dev-boards repository on GitHub, at the commit this page was made from: the board is ESP32-H2-MINI-1/basic/ESP32-H2-MINI-1-basic.kicad_pcb and its schematic ESP32-C3-MINI-1/ESP32-C3-MINI-1.kicad_sch. PCBKit opens the board in the browser, with nothing to install.

Can I use the ESP32-H2-MINI-1-basic design in my own project?

Its repository publishes it under the MIT licence: you may reuse it on that licence's terms (keep the author's notice, and for a copyleft licence share your changes alike).

Category and platform

ESP32 RISC-V

Topics

esp32 kicad oshw pcb

Project files

Show this board on your page

A live frame, for any web page

<iframe src="https://pcbkit.io/embed/boards/74th-esp32-dev-boards-esp32-h2-mini-1-basic" title="ESP32-H2-MINI-1-basic 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/74th-esp32-dev-boards-esp32-h2-mini-1-basic.jpg" alt="ESP32-H2-MINI-1-basic" width="1200" height="900">

A picture that opens the board, for a README

[![ESP32-H2-MINI-1-basic](https://pcbkit.io/embed/boards/74th-esp32-dev-boards-esp32-h2-mini-1-basic.jpg?size=s)](https://pcbkit.io/boards/74th-esp32-dev-boards-esp32-h2-mini-1-basic)

Source

Repository: 74th/esp32-dev-boards
Board file: ESP32-H2-MINI-1/basic/ESP32-H2-MINI-1-basic.kicad_pcb
Commit: 3ebaa91
Homepage: 74th.booth.pm/item_lists/nJgT9B48
Licence: MIT

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