LILYGO T-Relay S3

Dev Board
LILYGO T-Relay S3

ESP32-S3 board with 6 onboard relays, 16MB flash, 8MB PSRAM, WiFi, and BLE for ESPHome smart home automation, controlling lights, appliances, and HVAC systems.

Xtensa LX7 dual-core @ 240MHz, FPU, AI instructions512KB SRAM16MBWiFi 802.11 b/g/nBLE BLE 5.0
~$24View

LILYGO T-OI Plus

ESP32 C3
LILYGO T-OI Plus

LILYGO T-OI Plus is a compact ESP32-C3 development board with Wi-Fi, BLE 5.0, Grove connectors, and optional 16340 battery holder, designed to fit Sonoff BASICR2 enclosures.

ESP32-C3400KB SRAM4MBWiFi 802.11 b/g/nBLE Bluetooth 5.0 + Mesh

LILYGO T-Relay

ESP32
LILYGO T-Relay

ESP32 development board with 4 onboard HRS4H-S-DC5V relays, 4MB flash, 8MB PSRAM, WiFi, BLE 4.2, and optocoupler-isolated GPIO expansion — designed for wireless remote switch control of AC/DC loads.

ESP32520KB SRAM4MBWiFi 802.11 b/g/nBLE BLE 4.2
~$10View

LILYGO T7 V1.3 Mini32 ESP32

ESP32
LILYGO T7 V1.3 Mini32 ESP32

Compact ESP32 development board (Mini32 form factor) with 4MB Flash, WiFi 802.11 b/g/n, Bluetooth 4.2, CH340C USB-to-serial, TP4054 LiPo charger, and 1.25mm JST battery connector — a classic breadboar

ESP32520KB SRAM4MBWiFi 802.11 b/g/nBLE BLE 4.2

LILYGO ESP32-S2 WOOR

ESP32 S2
LILYGO ESP32-S2 WOOR

Compact ESP32-S2-WROOM module-based development board with 4MB Flash, 320KB SRAM, native USB OTG, WiFi 802.11 b/g/n, onboard LiPo charging, and BOOT/RESET buttons for USB HID and IoT prototyping.

ESP32-S2-WROOM320KB4MBWiFi 802.11 b/g/n

LILYGO T7 Mini32 V1.5

ESP32
LILYGO T7 Mini32 V1.5

Updated ESP32 Mini32 development board with 8MB PSRAM, 4/16MB Flash options, dual-core 240MHz, CH9102 USB-serial, WiFi, BLE 4.2, and 1.25mm JST LiPo connector in a 40×31mm breadboard-friendly footprin

ESP32520KB SRAM4MB/16MBWiFi 802.11 b/g/nBLE BLE 4.2

LILYGO ESP32-S2

ESP32 S2
LILYGO ESP32-S2

Pure ESP32-S2 development board with 4MB Flash, 8MB SRAM, native USB, WiFi 802.11 b/g/n, onboard LiPo charging, and multiple control buttons — a single-core Xtensa LX7 board for USB-HID and IoT applic

ESP32-S28MB SRAM4MBWiFi 802.11 b/g/n

LILYGO T-Relay 5V 8-Channel

ESP32
LILYGO T-Relay 5V 8-Channel

ESP32-WROVER-E development board with 8 optocoupler-isolated 5V relay channels (HRS4H-S-DC5V), Wi-Fi, BLE 4.2, 8MB PSRAM, and support for DC 12–24V power input for industrial automation.

ESP32-WROVER-E4MBWiFi 802.11 b/g/nBLE BLE 4.2
~$16View

FaikOut WiFi Aircon Controller

IoT Controller
FaikOut WiFi Aircon Controller

Open-source ESP32-S3 WiFi controller for Daikin air conditioners with local-only control via MQTT and Home Assistant. Replaces cloud-dependent Daikin WiFi modules with privacy-first, no-internet-requi

ESP32-S3-PICO-1 Xtensa LX7 dual-core @ 240MHz512KB SRAM8MBWiFi 802.11 b/g/nBLE BLE 5.0
~$42View

ESP8266 ESP-01S WiFi Module

ESP8266
ESP8266 ESP-01S WiFi Module

Compact ESP8266-based WiFi dev board with 1MB flash, 2 GPIO pins, and 802.11 b/g/n. Runs Arduino, MicroPython, ESPHome, and Tasmota firmware for smart home and IoT projects.

Tensilica L106 single-core @ 80/160MHz64KB instruction RAM + 96KB data RAM1MB2 GPIOWiFi 802.11 b/g/n

Shelly Plus 1

Relay Module
Shelly Plus 1

ESP32-C3 based WiFi/BLE smart relay module with 16A switching capacity, dry contact input, and compact DIN-rail or in-wall form factor. Flashable with Tasmota or ESPHome for local smart home control.

ESP32-C3400KB SRAM4MBWiFi 802.11 b/g/nBLE BLE 5.0
~$12View

Sonoff NSPanel

Smart Switch
Sonoff NSPanel

ESP32-based smart wall switch with 3.5-inch capacitive touchscreen, dual relay outputs, temperature sensor, and buzzer. Flashable with Tasmota for custom LVGL/Berry interfaces and Home Assistant integ

ESP32-D0WDQ6520KB SRAM4MBWiFi 802.11 b/g/nBLE BLE 4.2
~$50View

Sonoff MINIR4 Extreme

Relay Module
Sonoff MINIR4 Extreme

Ultra-compact ESP32-C3 WiFi smart switch module with 10A relay, detached switch mode, and the smallest form factor in its class. Fits any wall box. Flashable with Tasmota for local control.

ESP32-C3400KB SRAM4MBWiFi 802.11 b/g/nBLE BLE 5.0
~$10View

Shelly Plus 2PM

Relay Module
Shelly Plus 2PM

ESP32-based dual-relay WiFi/BLE smart switch with per-channel power monitoring via ADE7953, cover/shutter control mode, and 10A per channel. Flashable with Tasmota for local roller blind and dual ligh

ESP32520KB SRAM4MBWiFi 802.11 b/g/nBLE BLE 4.2
~$22View

Sonoff POW Elite 16A

Relay Module
Sonoff POW Elite 16A

ESP32-based WiFi smart switch with high-accuracy power monitoring via CSE7766, 16A relay, LCD display, and DIN-rail mounting. Flashable with Tasmota for local energy tracking and home automation.

ESP32520KB SRAM4MBWiFi 802.11 b/g/nBLE BLE 4.2
~$20View

DFRobot Xboard Relay

Dev Board
DFRobot Xboard Relay

Ethernet-controlled dual-relay board with ATmega32u4, WIZnet W5100 Ethernet, XBee socket, and two 10A relays for remote switching of AC/DC loads via web or MQTT, ideal for home automation.

ATmega32u4 @ 16MHz, single-core AVR2.5KB SRAM32KB (4KB bootloader)Ethernet 10/100 Mbps (W5100)
~$35View

DFRobot FireBeetle ESP8266

Dev Board
DFRobot FireBeetle ESP8266

Compact ESP8266 WiFi IoT microcontroller with Tensilica L106 at 80/160MHz, 16MB flash, 50KB SRAM, 10 digital I/O, onboard LiPo charging, 46uA low-power mode, OTA updates, and Arduino/MicroPython suppo

Tensilica L106 single-core @ 80MHz (max 160MHz)50KB SRAM16MBWiFi 802.11 b/g/n

Waveshare RP2350-ETH-8DI-8RO

Industrial Controller
Waveshare RP2350-ETH-8DI-8RO

Industrial DIN-rail RP2350B controller with 8-channel relay outputs (10A/250VAC), 8 optocoupler-isolated digital inputs, W5500 Ethernet (optional PoE), isolated RS485, RTC, microSD, and 7-36V wide-vol

ARM Cortex-M33 / RISC-V Hazard3 dual-core @ 150MHz, FPU, DSP, TrustZone, 12 PIO state machines520KB SRAM16MBEthernet 10/100 Mbps (W5500)
~$42View

Olimex ESP32-C6-EVB

Dev Board
Olimex ESP32-C6-EVB

Open-source hardware evaluation board with ESP32-C6, 4 mains-rated relays, 4 opto-isolated inputs, and WiFi 6/Thread/Zigbee/Matter connectivity for home and industrial automation.

RISC-V single-core @ 160MHz512KB HP SRAM + 16KB LP SRAM4MBWiFi 802.11ax (WiFi 6)BLE BLE 5.0Zigbee Zigbee 3.0
~$14View

M5Stack StamPLC

plc
M5Stack StamPLC

ESP32-S3 industrial PLC controller with 1.14" IPS LCD, 4 relays, 8 opto-isolated inputs, RS-485, CAN bus, INA226 power monitor, RTC, buzzer, microSD, and DIN-rail mounting in a compact enclosure.

Xtensa LX7 dual-core @ 240MHz, FPU, AI vector instructions512KB SRAM8MBWiFi 802.11 b/g/nBLE BLE 5.0
~$43View

Arduino Opta WiFi

Industrial Controller
Arduino Opta WiFi

Industrial micro PLC with STM32H747 dual-core Cortex-M7/M4, WiFi, BLE, Ethernet, 4\u00d72.3kW relays, Modbus TCP/RTU, hardware security, DIN rail mount, and IEC 61131-3 PLC programming — co-developed

ARM Cortex-M7 @ 480MHzCortex-M4 @ 240MHz1MB SRAM2MBWiFi 802.11 b/g/nBLE BLEEthernet 10/100 Mbps
~$168View

Arduino Opta Lite

Industrial Controller
Arduino Opta Lite

Entry-level industrial micro PLC with STM32H747 dual-core Cortex-M7/M4, Ethernet, 4\u00d72.3kW relays, Modbus TCP, hardware security, DIN rail mount, and IEC 61131-3 PLC programming — the affordable p

ARM Cortex-M7 @ 480MHzCortex-M4 @ 240MHz1MB SRAM2MBEthernet 10/100 Mbps
~$127View

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