This project is a motherboard for the ESP32-CAM module, which enables easy and flexible WiFi camera applications. The motherboard provides power supply, programming interface, and GPIO expansion for the ESP32-CAM. It also supports external sensors for more functionality. #motherboard #WiFi #MCU #ReferenceDesign #project #ESP32 #camera #reusable #module #edgeComputing #espressif #template

Example project for an Arduino MKR shield. It adds an external flash memory to the Arduino MKR. Based on the Arduino MKR Shield template. #project #arduino #shield #MKR

DIY BMS using ATTINY841-SSU this hardware has a higher balance current, fuse and TVS diode to help with voltage spikes. Most importantly, an external crystal to the micro controller (attiny841) which means the device is more reliable in low voltage situations

This project is a motherboard for the ESP32-CAM module, which enables easy and flexible WiFi camera applications. The motherboard provides power supply, programming interface, and GPIO expansion for the ESP32-CAM. It also supports external sensors for more functionality. #motherboard #WiFi #MCU #ReferenceDesign #project #ESP32 #camera #reusable #module #edgeComputing #espressif #template

Example project for an Arduino MKR shield. It adds an external flash memory to the Arduino MKR. Based on the Arduino MKR Shield template. #project #arduino #shield #MKR

The PAM8610, manufactured by Power Analog Microelectronics, is a high-performance, 10W (per channel) stereo class-D audio amplifier featuring DC volume control. This component is designed to deliver low THD+N (0.1%), low EMI, and high efficiency (>90%), making it ideal for high-quality sound reproduction in a variety of applications such as flat monitor/LCD TVs, multi-media speaker systems, DVD players, game machines, boomboxes, and musical instruments. Operating off a 7V to 15V supply, the PAM8610 distinguishes itself with its 32-step DC volume control ranging from -75dB to 32dB, shutdown/mute/fade functions, and comprehensive protection against overcurrent, thermal, and short-circuit conditions. Its low quiescent current, pop noise suppression, and minimal external component requirement further enhance its appeal for compact and efficient audio solutions. The PAM8610 is available in a compact 40-pin QFN 6mm*6mm package, ensuring a small footprint for space-constrained applications. Compliance with RoHS standards underscores its environmental consideration. With its advanced features and high integration level, the PAM8610 offers a compelling option for designers seeking to incorporate robust audio amplification with fine-grained volume control in their electronic projects.

This project is a motherboard for the ESP32-CAM module, which enables easy and flexible WiFi camera applications. The motherboard provides power supply, programming interface, and GPIO expansion for the ESP32-CAM. It also supports external sensors for more functionality. #motherboard #WiFi #MCU #ReferenceDesign #project #ESP32 #camera #reusable #module #edgeComputing #espressif #template

sEMG-DAQ is a wearable 6 channel data acquisition unit for capturing surface electromyographic (sEMG) signals from human arm muscles using SJ2-3593D jack connectors while conditioning, digitizing, processing and transmitting them as sEMG data to an external AI accelerated board through an SM12B-SRSS IDC connector where AI models are run for various applications including robotic control, muscle signals medical assessment and gesture recognition. The board leverages an INA125P instrumentation amplifier together with filter stages utilizing LM324QT op-amps for conditioning and an STM32G4A1VET6 microcontroller for the digitization, processing and data transmission of the signals. Since AI models can only be as good as the data, the design of such a DAQ is necessary to ensure clean, reliable and real-time data for AI applications requiring sEMG data. The board also has USB-FS and JTAG to cater for debugging. The power (5V) is fed through a screw terminal and is regulated by two LDK320AM LDO regulators to offer 5V, 3.3V and 1.8V to meet the requirements of various components on the board.

This project is a motherboard for the ESP32-CAM module, which enables easy and flexible WiFi camera applications. The motherboard provides power supply, programming interface, and GPIO expansion for the ESP32-CAM. It also supports external sensors for more functionality. #motherboard #WiFi #MCU #ReferenceDesign #project #ESP32 #camera #reusable #module #edgeComputing #espressif #template

3.3 V-powered pH and ORP probe interface using an ADS1115 module, MCP6002 through-hole buffers, and DS18B20 temperature sensing. External ESP32 connection is through one 5-pin header carrying 3V3, GND, SDA, SCL, and DQ; ADS1115 ADDR is fixed locally and ALERT is unused.

General-purpose AD5933 impedance analyzer with protected external 5 V input, regulated 3.3 V rail, host I2C interface, selectable 10 kΩ/100 kΩ/1 MΩ feedback ranges, and DUT connection for measurements up to 100 kHz.

Through-hole ESP32 DevKit V1 carrier board with six emotion/actuator headers, TFT and RFID interfaces, external 5 V input, and corner mounting holes.

USB-C 5 V powered controller generating protected 3.3 V and 8 V television rails plus a piezo tap-detector interface for an external ESP32-C3 module.

Compact USB-C RP2040 development board with external QSPI flash, crystal, protected USB 2.0, LEDs, BOOTSEL, and test-pad debug access.

Mono 400 W / 8 Ω high-voltage IRS2092S-family Class-D amplifier for external ±85 V main rails and external auxiliary rails.

Production-intent universal replacement for the common JBD BMS UART Bluetooth module, adding ESP32-C3 Wi-Fi/BLE, USB-C service, protected 5–36 V input, dual external NTC probes, and internal humidity/temperature sensing.

Compact MAX86141 reflective PPG sensor breakout with 3.3 V host power, SPI, green/red/IR emitter, and external photodiode.

Compact drone companion autonomy, guidance, communications, and payload-management module with independent safety controller, external mmWave radar support, rugged I/O, and 9–36 V aircraft power input.

Screw-terminal wiring and power-distribution PCB for an Arduino Mega, four BTS7960 DC motor drivers, a TB6600 stepper driver, relay-controlled pumps, MG996R servos, HC-SR04 sensors, DS18B20 probes, and potentiometers. Accepts 24V and interfaces to external high-current buck converters.

Industrial Raspberry Pi CM4/CM5-compatible RTK base-station carrier with PoE+, external DC input, BQ25750 2S Li-ion UPS, USB hub, Mosaic-X5 mPCIe GNSS, Quectel EM05 LTE, Ethernet, watchdog, protection, and JLCPCB-focused manufacturing constraints.

USB-C powered companion potentiostat/supply board for the 96-Well Electrode Plate. Provides Arduino-controlled DAC setpoint generation, OLED/encoder UI, 16-bit current measurement, hardware current-limit shutdown, load-detect LED, three SMB outputs, and INT/EXT routing to binding posts for external potentiostat use.

USB-C powered ESP32 WiFi water-flow-meter controller for an external 12V RS485 ultrasonic sensor on 3/4 inch PVC pipe, with protected power input, 3.3V logic rail, 12V boost rail, programming header, reset/boot controls, and status LEDs.

ESP32-controlled programmable negative constant-current supply using an LT3094 post-regulator, positive 24 V input, inverted negative rail generation, 100 mA current limit, and external 16-bit ADC readback for output voltage/current.

Open-source rechargeable DECT NR+ wireless intercom beltpack prototype for four church operators, focused on low-latency speech, external headset/PTT, removable 18650 power, USB-C charging, and development-oriented test access.

Vibe-wared 5 V 10×10 monochrome LED matrix with 10 mm pitch, cascaded constant-current serial drivers, multiplexed row switching, and an external controller interface.