ESP32-C3-MINI Schematic Design

Worked for 3 mins 26 sec

I can design it, but this project is currently a view-only ESP32-C3-MINI-1-H4 part project, not an editable product schematic. I inspected it: it contains the module’s 61 terminals and no nets, so I can’t safely build the application schematic directly here unless you fork it or give edit access.

Recommended baseline schematic:

ESP32-C3-MINI-1-H4 module
USB-C connector for 5 V input and native USB programming
AP2112K-3.3TRG1 LDO: 5 V → 3.3 V, 600 mA
USB ESD protection on D+ / D−
5.1 kΩ CC pull-downs on USB-C CC1/CC2
3.3 V decoupling: 10 µF bulk + 100 nF close to ESP32 3V3
EN reset circuit: 10 kΩ pull-up to 3V3 + 1 µF to GND + RESET button to GND
BOOT button: GPIO9 to GND, with GPIO9 normally pulled high
GPIO2 pull-up recommended for robust boot behavior
GPIO18 / GPIO19 wired to USB D− / D+
UART0 header: TXD0, RXD0, 3V3, GND
GPIO expansion header for IO0–IO10 as available
All module GND and exposed pad pins tied to GND
All NC pins marked no-connect

Power budget basis: the ESP32-C3-MINI datasheet requires an external 3.3 V supply capable of at least 500 mA, so the 600 mA AP2112K is acceptable for a simple USB-powered board, with thermal dissipation around (5 V - 3.3 V) × 0.5 A = 0.85 W at worst-case peak. That is high for small copper, so for sustained high Wi-Fi current I’d either add generous copper for the LDO or use a small buck regulator instead.

Fork this project or open an editable project and I’ll implement the schematic directly.

robin93

Yes, I’ll fork the project; then implement the full schematic there.

Worked for 14 sec

flux

Great. After you fork it, open the forked editable project and send me: “Implement the ESP32-C3 full schematic here.”

I’ll then build the actual schematic in that fork: USB-C power/programming, 3.3 V regulator, EN/BOOT/reset circuitry, USB ESD, decoupling, UART/GPIO headers, net labels, no-connects, and ERC cleanup.

Implement in fork

Add buck option

Keep USB-C native

Add beginner headers

Create documentation

Reviews

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