Use this template if you're planning to get your 1 to 2-layer board manufactured in JLCPCB. It has the via min/max and trace width constraints already baked as global rules. #project-template #template #manufacturer-design-rules

Mobile Hydraulic Fluid Filtration Test Bench with 220VAC Power, 24VDC Isolated Controls, ESP32 Monitoring, and Safety Interlocks

Production-readiness engineering review of the ESP32-C5 Node Cluster V2 EasyEDA design, including schematic, PCB, Gerbers, BOM, pick-and-place, power, RF, and battery safety.

Controller board for a dental suction vacuum pump system using a 24 V low-voltage control board, VFD motor drive interface, 4–20 mA vacuum sensing, float/temperature safety inputs, solenoid flush output, alarm output, and local display.

Arduino-compatible SMC3/SimTools 3-DOF motion controller for three 12 V worm-drive motors, Hall feedback sensors, dual USB-C interfaces, and E-stop safety input.

The ATtiny85 Thermo Buzzer Board is a small but powerful tool that can help you prevent dangerous situations caused by high temperatures, making it an essential device for safety-conscious individuals. #safetyfirst #hightemperaturewarning #electronicsafety #attiny85project #makerscommunity

Automotive dashboard-mounted AI driver safety device with Raspberry Pi CM4, Coral Edge TPU, dual CSI cameras, GPS, LTE, WiFi/Bluetooth, motion sensing, audio alerts, 12V vehicle input, LiPo backup, and 4-layer controlled-impedance PCB requirements.

Compact 60 mm x 40 mm child safety wearable PCB with ESP32-S3, SIM800L GSM, NEO-6M GPS, MPU-6050, MAX30102, USB-C charging/programming, LiPo battery input, and test-pointed I2C/UART power rails. Target layout is 2-layer with all components on top, bottom ground plane, short direct I2C/UART routing, and GSM placement isolated from GPS and sensor sections.

STM32F401 Blackpill-style railway crossing safety controller with dual 12V input selection, LM2596 5V buck, AMS1117-3.3 MCU rail, horn relay driver, and edge-mounted off-board sensor, servo, and UART connectors for modular prototyping.

Welcome to your new project. Imagine what you can build here.

ESP32 DevKit V1 sensor hub powered from a 12V barrel jack through an LM2596 5V buck converter, with gas, temperature, flame, thermal camera, OLED, relay outputs, buzzer, and ESP32-CAM connections.

Use this template if you're planning to get your 1 to 2-layer board manufactured in JLCPCB. It has the via min/max and trace width constraints already baked as global rules. #project-template #template #manufacturer-design-rules

Welcome to your new project. Imagine what you can build here.

Welcome to your new project. Imagine what you can build here.

This project aims to design and develop a modular monitoring system for a LiC supercapacitor array, incorporating PCBs A and B for voltage sensing on either side of the array, and PCB C for central control. PCBs A and B will measure cell voltages, communicate data via I2C, and feature activity/status LEDs, powered directly from the array. PCB C will aggregate data, managing over/under voltage, overcurrent, and balancing. The goal is a compact, efficient solution to ensure the array's safety and longevity.

The Texas Instruments TPA3140D2 is a high-efficiency, Class-D audio power amplifier designed for driving bridged-tied stereo speakers with outputs up to 10 W per channel into 6 Ω or 8 Ω loads. With advanced EMI suppression technology, including spread spectrum control and a 1SPW modulation scheme, the TPA3140D2 ensures robust performance while minimizing electromagnetic interference. Operating within a wide supply voltage range from 4.5 V to 14.4 V, this amplifier eliminates the need for heat sinks due to its up to 90% efficient Class-D operation. Integrated SpeakerGuard™ protection features such as automatic gain limit (AGL), adjustable power limiter, and DC protection enhance speaker safety and audio quality. Additionally, the TPA3140D2 includes comprehensive protection against pin-to-pin, pin-to-ground, and pin-to-power short circuits, as well as thermal protection with auto recovery. The device offers four selectable fixed gain settings and supports both single-ended and differential analog inputs, making it suitable for a variety of consumer audio applications including televisions, wireless speakers, mini speakers, and USB speakers. The TPA3140D2 is available in a 28-pin HTSSOP package, ensuring ease of integration into compact designs.

A basic bike light without safety measures

USB-powered isolated listen-only NMEA 2000/CAN gateway that forwards boat network data over Wi-Fi to an iPad web dashboard. Prototype prioritizes bus safety: no termination, isolated CAN, and hardware-disabled TX path.

ESP32-based USB-C powered controller for four 5 V / 1 W heater strips, with PCB-mounted safety and ambient temperature sensing, OLED UI, rotary encoder, RGB status LED, and cost-conscious reliability/protection design.

Isolated 220 VAC to 5 V / 2 A power supply using a certified AC-DC module, with potentiometer-controlled PWM output for a 5 V load. Includes mains input protection and safety documentation assumptions.

AutoPilot V4.0 C.O.R.E. Brain Box Rev D for Vermeer D20x22 HDD, with isolated CM4, relay, and 24V safety domains, I2C DAC/ADC control, relay driver cells, and Deutsch harness connectors.

Low-cost USB-C 5V UV-C LED driver PCB for drinking-water sterilization prototypes with current limiting and safety interlock.

Control PCB for a robotic platform with 24V input, STM32F427ZI coordination, Ethernet/USB/CAN/RS-485/wireless interfaces, load gating, thermal control, and STO safety monitoring.

Compact Li-Po powered ESP32 wearable vibration alert prototype for construction worker safety monitoring, using a relay module to directly switch a 3V coin vibration motor with beginner-friendly soldering and labeled PCB wiring.

Wearable Industrial Safety Monitor — STM32C011 + ESP8266, IMU/environment/microphone sensing, RGB/vibration alerts, LiPo/AP7361 power, 70 mm × 50 mm 2-layer PCB with bottom GND plane.