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Public designs

19-23 of 23 boards

3.3v-3a-step-down-converter-powered-by-usb-c

@maudeve-it

Without using a USB-C PD controller chip, handling communication over the USB cable, USB-C standard allows to get 5V up to 3A through a hardware availability detection. Here I show a design developed on KiCad and made through JLCPCB, powering from a USB-PD source and providing 5V and 3.3 (through a step-down converter) up to 3A.

schematicpcbbomcapacitorresistortransistorinductor

MIT00Jul 8, 2026

tokay-lite-pcb

@maxlab-io

Tokay AI Camera - ESP32 camera development board

schematicpcbbomledinductorcapacitorresistor

CERN-OHL-P-2.000Jul 8, 2026

pcb-domestic-vibration---motion-sensor

@mbfredys

Domestic vibration sensor with ESP32: detects and monitors motion and vibrations in real-time using a 6-axis MPU-6050 IMU. Battery-powered and Wi-Fi/Bluetooth enabled, ideal for smart home, IoT, and predictive maintenance applications.

schematicpcbbomcapacitorESP32ICresistor

MIT00Jul 8, 2026

smartcabletester

@uxabix

A modular device designed to test electrical cables. It supports testing of both short cables (both ends accessible) and long cables (with ends far apart). The device visually indicates conductor continuity using LEDs.

schematicpcbbomresistorcapacitortransistorIC

MIT00Jul 8, 2026

li-po-charger

@valeronm

Schematic and PCB for Li-Po charger with power path, power management inputs, charging state and 3.3V output and I2C fuel gauge

schematicpcbbomcapacitorresistordiodeconnector

MIT00Jul 7, 2026

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