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

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.

PCB de control para planta térmica experimental con ESP32 DevKit V1, LM2596, LM35, TM1637 y etapa MOSFET IRLZ44N para calefactor 12V/40W.

Circuito industrial modular con ESP32 DevKit V1 para monitoreo preventivo de refrigeradores industriales y cafeteras, con entrada 12VDC, conversión a 5V/3.3V, sensores protegidos y lógica de 3.3V.

2-layer SMD-only ESP32 DevKit V1 relay automation carrier board with LM2596 module pads, ULN2803A driver, relay wire pads, LEDs, pull-downs, and no drilled holes.