Arduino Opta Lite vs RS485 vs WiFi: compare the three Opta PLC variants on Ethernet, USB-C, Modbus RTU, Wi-Fi/BLE, identical I/O, relay outputs, expansion support, security, PLC IDE compatibility and which model best fits local, wired or wireless automation.

Arduino Opta pinout and I/O guide: map the 12-24 V supply terminals, eight I1-I8 digital/analog inputs, four 10 A relay outputs, Ethernet, USB-C, RS-485, Wi-Fi/BLE variants, user button, status LEDs, expansion bus and STM32H747 architecture.

Arduino Portenta Machine Control pinout guide: 24 V digital inputs/outputs, programmable I/O, 0-10 V and 4-20 mA analogue channels, PT100 and thermocouple inputs, ABZ encoders, CAN, RS-232/422/485, Ethernet, I2C, USB and Portenta H7 mappings.

Arduino Portenta X8 vs ESP32-P4: compare the Linux-based i.MX 8M Mini + STM32H747 architecture with Espressif's dual-core 400 MHz RISC-V MCU, including RAM, storage, H.264, MIPI CSI/DSI, USB, Ethernet, PCIe, wireless, containers, Arduino support and real-time control.

Arduino Portenta C33 vs ESP32-C6: compare the 200 MHz RA6M5 Cortex-M33 industrial SoM with Espressif's 160 MHz RISC-V Wi-Fi 6, BLE 5.3 and 802.15.4 platform, including RAM, Flash, CAN, Ethernet, DAC, security, Thread/Zigbee and low-power IoT use.

Arduino Portenta X8 guide: understand the i.MX 8M Mini Linux processor, STM32H747 real-time M4 core, Docker containers, MessagePack-RPC, GPIO and industrial I/O, 2 GB RAM, 16 GB eMMC, Ethernet, Wi-Fi and carrier boards.

Arduino Portenta C33 pinout guide: Renesas RA6M5 Cortex-M33 GPIO, ADC, dual DAC, PWM, UART, SPI, I2C, dual CAN, USB-C, 100Mb Ethernet, ESP32-C3 Wi-Fi/BLE and the two 80-pin high-density connectors explained.

Arduino Portenta H7 pinout guide: STM32H747 M7/M4 GPIO, ADC, DAC, PWM, UART, SPI, I2C, CAN, USB-C, Ethernet, camera, display, SD and the two 80-pin high-density connectors explained.

Arduino MKR Vidor 4000 FPGA guide: understand the Cyclone 10 architecture, SAMD21-to-FPGA workflow, Quartus projects, bitstreams, shared pins, 8 MB SDRAM, Micro HDMI, MIPI camera, custom peripherals and EOL considerations.

Arduino MKR WAN 1310 vs ESP32 LoRa boards: compare the SAMD21 + SX1276/Murata platform with modern ESP32-S3 + SX1262 boards such as Heltec WiFi LoRa 32 V3 and LilyGO T3-S3 for LoRaWAN, Meshtastic, Wi-Fi/BLE, battery use and remote IoT.