Bitcoin miner controller board revised so J2 is a dedicated USB-C USB 2.0 control and monitoring connector feeding U2, while X1 is a dedicated 25 MHz oscillator driving IC1 on ASIC_CLK for the mining subsystem.

Production-ready ESP32-DEVKITC-32UE festival carousel horse LED controller schematic with organized Power, ESP32 + Level Shifter + LEDs, Inputs, and DMX + OLED blocks.

Compact 4-layer dual PCA9685 servo controller with Raspberry Pi 5 and STM32 Nucleo interfaces

Per-channel low-voltage controller PCB for RIL TC/HF/LeTID and PID test benches. STM32H7, 16-bit DAC setpoints, 24-bit ADC sense (4-wire), isolated digital interface to gate driver, PT100/RH conditioning, Ethernet, interlocks. Safety-critical brain board.

4-layer dual PCA9685 servo controller with Raspberry Pi 5, STM32 Nucleo, TXS0102 I2C level shifting, 6.0V/20A servo rail, and 5.1V logic rail.

4-layer dual PCA9685 servo controller for Raspberry Pi 5 and STM32 Nucleo with TXS0102 I2C level shifting, 6V/20A servo power distribution, OE safety disable, and VSense monitoring.

4-layer dual PCA9685 servo controller for Raspberry Pi 5 and STM32 Nucleo with 20A servo power distribution

Dual PCA9685 servo controller PCB for Raspberry Pi 5 and STM32 Nucleo with 16 servo outputs, 5.1V logic, 6V/20A servo power, and 4-layer layout.

DIN-rail ESP32-S3 mains-powered controller with isolated 5 V supply, Ethernet RJ45, USB-C service port, and central LED module connector.

DIN-rail ESP32-S3 mains-powered controller with isolated 5 V supply, Ethernet RJ45, USB-C service port, and central LED module connector.

Industrial ESP32-based mains-powered controller with 220 VAC input, isolated 5 V supply, 8 SSR-controlled high-current AC output channels, and a single RTD temperature input. Layout and safety constraints must preserve reinforced isolation and separation between hazardous mains/high-current paths and low-voltage control circuitry.

Golf ball dispenser controller with protected 12V-24V DC input, LM2596 5V buck, ESP32 control, INA219 relay-coil sensing, and dry-contact relay output.

ESP32-S3 quadcopter flight controller with OV5640 24-pin DVP camera interface, Wi-Fi video link, BLE telemetry, onboard USB-C power/programming, IMU, barometer, ToF altitude sensing, lidar connector, and 4 ESC PWM outputs.

Industrial ESP32-C3 controller board with isolated RS-485, protected 12V-24V input, opto-isolated digital inputs, sensor interfaces, and production debug header.

Compact ESP32-S3 AI robot controller with DevKitC-1 module, 2S Li-ion power input, 5V buck regulator, optional clean 3.3V rail, TB6612FNG dual motor driver, OV2640 camera FPC, I2S audio, OLED, ultrasonic and TCRT5000 sensor headers, and a compact 2-layer PCB prepared for Gerber export.

High-power wind turbine charging controller that boosts a 20-40 V, up to 2000 W turbine source to charge a 48 V power bank with sensing, intelligent operating-mode control, and protection including diversion handling.

Modular ESP32 dev-board smart photobioreactor controller with 12 V input protection, 5 V buck conversion, 3.3 V regulation, connectorized sensors and actuators, I2C LCD and RTC, SPI SD logging, GPIO breakout, test points, and prototype-friendly high-power/low-power partitioning.

Multi-layer circular BLDC motor controller for a 24 V, up to 750 W system using an ESP32-WROOM with DRV8323RS gate driver, six external MOSFETs, 2 mOhm shunt current sensing, bottom-mounted AS5600 encoder, USB-C programming/user interface, 3.3 V logic powered from the DRV8323RS buck regulator, and heavy motor phase pads sized for approximately 30 A current paths. Target layout is a circular board around 50 mm diameter, expandable if required for thermal management, power routing, and signal integrity.

Automotive smart fuel pump controller with >12 V battery qualification, protected battery input, analog FSCM command following, 25 A current sensing, thermal/fault indication, blue/red LED signaling, and 5-second buzzer alert. Control and fault nets are explicitly terminated to avoid floating or undriven states; any intentionally provisional control nodes are weakly biased to safe defaults during refinement.

ESP32-S3 door access controller with USB-C Li-ion charging, VBAT and 12V lock power, dual 3.3V rails, I2C sensor headers, reed/PIR inputs, LED indicators, buzzer, and MOSFET plus relay lock outputs. External modules and field devices remain represented by connector placeholders with documented pinouts for later PCB and validation work.

Industrial-grade embedded I/O controller schematic with 9-36V protected input, 5V buck, 3.3V logic, STM32F103C8T6 MCU, industrial dry/wet/pulse/analog inputs, 12V semiconductor-switched output, RS-485/UART communications, external watchdog, SWD/debug features, and interview-ready engineering notes.

This is a STM32F4 Flight Controller template with 6-axis Accelerometer, Gyroscope. With OSD generator MAX7456EUI. #drone #flightController #STM32F405 #controller #OSD #video #referenceDesign #project #MPU6000 #template

This is a STM32F4 Flight Controller template with 6-axis Accelerometer, Gyroscope. With OSD generator MAX7456EUI. #drone #flightController #STM32F405 #controller #OSD #video #referenceDesign #project #MPU6000 #template

This is a STM32F4 Flight Controller template with 6-axis Accelerometer, Gyroscope. With OSD generator MAX7456EUI. #drone #flightController #STM32F405 #controller #OSD #video #referenceDesign #project #MPU6000 #template

This is a STM32F4 Flight Controller template with 6-axis Accelerometer, Gyroscope. With OSD generator MAX7456EUI. #drone #flightController #STM32F405 #controller #OSD #video #referenceDesign #project #MPU6000 #template