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ESP32-Write-CH9102F

74th·esp32-dev-boards·ESP32-Writer-CH9102F/ESP-Writer-CH9102F.kicad_pcb

ESP32-Write-CH9102F PCB layout, top view — open source ESP32 board by 74th
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About the ESP32-Write-CH9102F PCB

ESP32-Write-CH9102F is an open source ESP32 PCB design by 74th, published on GitHub under the MIT license. It is a 2-layer board measuring 34.3 × 19.5 mm, with 25 components from 20 distinct parts.

Its main chip is the ESP32-C3-MINI-1, from the ESP32 family. Other key parts include the AMS1117-3.3. By type, the board carries 7 capacitors, 5 resistors, 3 ICs, 3 diodes, 2 transistors and 2 connectors.

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

From the project

ESP32 Dev Boards PCB

🇯🇵 ESP32 Write Pro CH9102F: CH9102F使用自動ダウンロード制御付きESP32書き込みツール

- Uses WCH CH9102F - Use CH32V003 for automatic download control and reliable timing control - Switch to download mode with button - ESP-Prog compatible with 1.24mm 2x3 box pin headers for ESP32 writing - Solder jumper to switch between 3.3V or 5V supply voltage for ESP-Prog compatible ports

- WCH CH9102Fを使用 - 自動ダウンロード制御に、CH32V003を使用して、確実なタイミングで制御する - ボタンによるダウンロードモードへ切り替え - ESP-Prog 互換ESP32書き込み用1.24mm 2x3ボックスピンヘッダ搭載 - はんだジャンパで、ESP-Prog互換ポートの電源電圧を、3.3Vまたは5Vに切り替え可能

ESP32-Write-CH9102F, from the project README
From the project README

Main components on the ESP32-Write-CH9102F

ESP32-C3-MINI-1AMS1117-3.3

ESP32-Write-CH9102F bill of materials (BOM)

25 components, 20 distinct parts — part numbers from the project's BOM.

QtyPartRefs
1
ESP32-C3-MINI-1
CH9102F
U1
1
ESP32-C3-MINI-1
CH213K
U3
1
AMS1117-3.3
AMS1117
U4
2
2N7002
Q1, Q2
1
USB2.0-C_SMT
J1
1
ESP-Prog-ProgramCOM_SEND
J2
1
Pin_7
CH1
1
KT6-1100SMDI
F1
1
Jumper_3_Open
JP1
1
RED
D1
2
BLUE
D2, D3
2
10U
100n
C1, C2
2
100N
100n
C3, C4
1
22u
C5
1
100N
10u
C6
1
10U
10u
C7
1
5.1K
5.1k
R1
2
10K
5.1k
R2, R3
1
5.1K
10k
R4
1
10K
10k
R5

ESP32-Write-CH9102F design files

The KiCad project lives in the 74th/esp32-dev-boards repository on GitHub; these links point at the commit this page was built from.

ESP32-Write-CH9102F: common questions

What microcontroller does the ESP32-Write-CH9102F use?

The ESP32-Write-CH9102F is built around the ESP32-C3-MINI-1, from the ESP32 family.

How big is the ESP32-Write-CH9102F PCB?

The ESP32-Write-CH9102F measures 34.3 × 19.5 mm, has 2 copper layers and is 1.6 mm thick.

How many components are on the ESP32-Write-CH9102F?

25 components, from 20 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 ESP32-Write-CH9102F design files?

From the 74th/esp32-dev-boards 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 ESP32-Write-CH9102F design in my own project?

Yes, under the terms of its MIT license, which 74th chose for the repository.

Can I test firmware for the ESP32-Write-CH9102F 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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