Waveshare 6-Channel ESP32-S3 WiFi Relay Module with Onboard RS485 Pico HAT Interfaces The Industrial 6-Channel ESP32-S3 WiFi Relay Module is a powerful automation control board designed for both students and professionals working on smart home or industrial projects. At its heart is the ESP32-S3 chip with a dual-core 240MHz CPU, 512KB SRAM, and 2.4GHz WiFi + Bluetooth 5 connectivity, making it perfect for IoT applications. The board features 6 high-quality relays, each capable of handling loads up to 10A at 250VAC, suitable for controlling lights, motors, pumps, and other electrical equipment. What makes this module stand out is its versatility - you can control the relays through WiFi, Bluetooth, RS485 protocol, or even manually using the onboard push buttons, giving you multiple options based on your specific needs. This relay module is designed with education and practical applications in mind, featuring a Raspberry Pi Pico HAT interface that allows easy connection with Raspberry Pi boards. The onboard RS485 interface comes with surge protection, making it suitable for industrial environments where communication reliability is crucial. For beginners, the board is fully compatible with Arduino IDE, allowing for simple programming and customization. Each relay has its own status indicator LED, and the module includes clear terminal blocks for easy wiring. Whether you're a student learning about automation systems, an electronics shop owner selling IoT components, or an engineer working on industrial control projects, this ESP32-S3 Relay Module provides a reliable and flexible solution for your control requirements. Features: ESP32-S3 chip with dual-core 240MHz CPU, 512KB SRAM, and 2.4GHz WiFi + Bluetooth 5 6 high-quality relays with 10A/250VAC rating for controlling various electrical devices Multiple control methods: WiFi, Bluetooth, RS485, and manual push buttons Onboard RS485 interface with surge protection for reliable industrial communication Raspberry Pi Pico HAT interface (40-pin) for easy connection with Raspberry Pi boards Compatible with Arduino IDE for simple programming and customization Individual relay status indicators and terminal blocks for convenient wiring and monitoring

Waveshare Industrial Modbus RTU 8 Channel Relay Module RS485 This is an industrial 8-channel Modbus relay module that is controlled by an RS485 bus and uses the Modbus RTU protocol. This 8 channel Modbus relay board has embedded protection circuits like power isolation, ADI magnetic isolation, TVS diode, and so on. It also includes an ABS enclosure. The Modbus RTU Relay is extremely simple to use. The Modbus relay module is an ideal choice for industrial control equipment and/or applications with high communication requirements due to its fast communication, stability, reliability, and safety. A reverse-proof circuit that prevents the circuit from accidentally being damaged by an incorrect connection. The MCU status and signal transceiving status are indicated by 3 LEDs, they are: LED indicators used: STA: MCU indicator, keep flashing when the MCU normally working TXD: TX indicator, light up when sending data RXD: RX indicator, light up when receiving data Also, read our blog on Applications of Relay explaining 8 major applications, what is it, how does it works, its construction, and different types of relays. Features Configurable device address (1~255) allows multiple devices to cascade on the RS485 bus. Flash-on, flash-off function enables automatic relay shutdown after a set time. Built-in isolated power supply ensures stable voltage without extra power. ADI magnetic isolation for high reliability, strong anti-interference, and low power consumption. TVS protection suppresses surge and transient spike voltage for lightning-proof and anti-static safety. Optocoupler isolation prevents interference from high-voltage circuits. Reverse-proof circuit protects against damage from incorrect wiring. High-quality relay with ?10A 250VAC/30VDC contact rating. Rail-mounted ABS plastic enclosure for easy installation and safety. Three LED indicators display MCU and signal transmission status. What’s On Board: Hardware Diagram of Industrial Modbus RTU 8-ch Relay Module Applications: Industrial Control - Valve control, pump station control, unattended industrial control system Smart Home - Controlling appliances like air conditioner, access control, purifier, water heater, and so on Intelligent Agriculture - Controlling door curtain motor, air blower, and so on Breeding And Farming - Controlling ventilator, lighting, water supply, feeding system, and so on

Waveshare SIM7028 NB-IoT HAT for Raspberry Pi with Global Band NB-IoT Communication Support The SIM7028 NB-IoT HAT supports global bands and a variety of communication protocols, including MQTT(S), HTTP(S), TCP, UDP, and others. It is made for low-power, low-latency Internet of Things applications. Jetson Nano, Raspberry Pi series boards, and other microcontrollers may all use it because it has a standard 40PIN GPIO header. With a USB-to-UART chip for flexible communication, a nano SIM card slot, UART control pins for external connections, an onboard Type-C interface for software debugging, and a range of IoT applications, including asset tracking, smart meters, remote healthcare, and smart city solutions, this module is incredibly versatile. It ensures simple development and integration by providing documentation and online resources with sample codes for the Raspberry Pi, Jetson Nano, Arduino, and ESP32. Pinout Features: Supports Jetson Nano and Raspberry Pi series boards and has a standard 40PIN GPIO extension header. supports a variety of protocols, including HTTP(S), MQTT(S), LWM2M, COAP, DTLS, DNS, NTP, PING, TCP, UDP, and TLS/SSL. Type-C onboard interface for debugging software Onboard UART control pins for Arduino/STM32 and other host board connections One LED indicator makes it simple to keep an eye on the operational state. A jumper can be used to configure the UART communication pin on the onboard USB to UART chip. Compatible with NB-IoT-specific cards, the onboard micro-SIM card slot Baudrate: 2400 bps to 460900 bps (defaulting to 115200 bps) 3GPP TS 27.007, 27.005, and SIMCOM enhanced AT commands are used for control. Supported SIM application toolkits include USAT, GSM 11.11, and SAT Class 3. includes a handbook and online development resources (e.g., Raspberry Pi, Arduino, Jetson Nano, and ESP32 examples).

Waveshare SIM7600G-H 4G DONGLE with GNSS Global Band Support The Waveshare SIM7600G-H 4G Dongle with GNSS Global Band Support is a high-performance, industrial-grade cellular dongle designed for global connectivity needs. Featuring support for worldwide 2G, 3G, and 4G LTE bands, this versatile dongle ensures reliable communication in various environments. With impressive data speeds of up to 150Mbps downlink and 50Mbps uplink, the SIM7600G-H 4G Dongle provides stable and fast network access for mobile, embedded, and industrial applications. Whether you are working with a PC, laptop, Raspberry Pi, drone, or industrial computer, this compact device allows seamless 4G connectivity on the go. Additionally, the SIM7600G-H GNSS Dongle integrates GNSS capabilities, making it suitable for applications that require precise positioning and tracking. It supports major operating systems including Windows, Linux, and Android, offering maximum flexibility for diverse IoT and M2M deployments. Please note that the actual data rate may vary depending on network conditions, coverage, and congestion. Features: Supports 2G/3G/4G network connections in a worldwide band. The driver is offered for various operating systems, including Windows, Linux, and Android. Supports network protocols such as TCP/IP/IPV4/IPV6, Multi-PDP, FTP/FTPS, HTTP/HTTPS, and DNS. Onboard USB port allows for direct connection with ARM/X86 hosts or other industrial computers. Onboard UART port with hardware flow control for interfacing to host boards such as Arduino and STM32. Onboard GNSS connectivity allows GPS, Beidou, Glonass, and LBS base station placement (an extra GNSS antenna is required but not provided). Nano SIM card slot accepts 1.8V and 3V nano-SIM cards. 3x LED indicators allow you to easily monitor the functioning state. Portable, customizable enclosure, tiny size, attractive appearance. Baudrate support: 300bps ~ 4Mbps (default: 115200bps). Baudrate auto-negotiation ranges from 9600bps to 115200bps. Package Imcludes: 1 x SIM7600G-H 4G DONGLE 1 x 360 Degree Foldable LTE Antenna 1 x USB extension cable 1 x 6PIN jumper wire 1 x Screws tool kit

WeeeCore Bot AIOT Voice Programming Robot Unlock the world of interactive learning with WeeeCore Bot, the innovative AI voice coding IoT drawing robot. Perfect for learners of all ages, it combines fun with education, paving the way for a future where technology and learning go hand in hand. WeeeCore Bot measures 181066 and is suitable for all ages, ensuring the highest quality and durability. Its rich features include voice coding, drawing, programming, IoT integration, and a comprehensive sensor array. Made in Weeemake STEAM Tech Co., Ltd., it guarantees a unique learning experience, fostering critical thinking, creativity, and problem-solving skills. AI and IoT Bot for schools. Voice Coding: Simple voice command control for beginners. Advanced Programming: Learn with Scratch 3.0 and microPython. IoT Capabilities: Connect and control with cutting-edge IoT integration. Drawing: Bring your artistic visions to life. Expandable Electronics Interface: Connect more devices via RJ11 and open-source ports. Features: Voice Coding Drawing Programming IoT Integration Rich Sensor Array Interactive Learning Applications: Voice Coding: Allows users to command and control the robot through simple voice instructions, making it suitable for beginners. Drawing: The robot has drawing capabilities, making it a creative tool for integrating art into STEM education. Programming: Supports Scratch 3.0 and microPython, catering to a wide range of coding skills, encouraging skill development. Interactive Learning: Fosters critical thinking, creativity, and problem-solving skills through an interactive and engaging learning experience.

WeMos Lolin V1.0 wifi+Bluetooth This is WeMos LOLIN32 board which is based on ESP 32 Rev1 Wifi and Bluetooth Board. The WeMosboard is designed perfectly for DIY wifi-based projects compatible with Arduino. This WeMos Lolin wifi board is inspired by Adafruit’s Feather series. It has 4 MB flash memory onboard, a USB-serial adapter (cp210x), and a LiPo battery charger and connector. All the relevant pins are broken out and well-labelled, especially on the bottom. It has a nice central reset button and even a single-user LED for your blinking pleasure. Pinout: Pinout of WeMos Lolin V1.0 wifi+Bluetooth Applications: Wireless Communications IoT Applications Control System Home A utomation

WiFi Kit 32 WiFi Kit 32 is a classic IoT dev-board designed & produced by Heltec Automation(TM), it’s a highly integrated product based on ESP 32 (include Wi-Fi and BLE), Li-Po battery management system, 0.96? OLED is also included. It’s the best choice for smart cities, smart farms, smart home, and IoT makers. The internal flash of the ESP32 module is organized in a single flash area with pages of 4096 bytes each. The flash starts at address 0x00000, but many areas are reserved for Esp32 IDF SDK and Zerynth VM. There exist two different layouts based on the presence of BLE support. Note: The device can operate on an external supply of 2.5 to 6 volts. If using more than 6V, the voltage regulator may overheat and damage the device. Pinout: Pinout of WiFi Kit 32

Wireless Module A7 GSM GPRS GPS This is a development board for serial GSM/GPS functionality, based on AI-Thinker's A7 module. It is designed to support dual-band GSM/GPRS networks, enabling remote transmission of GPRS and SMS message data. The A7 module is equipped with GSM/GPRS/GPS features, allowing it to operate on GSM/GPRS Quad-Band (850/900/1800/1900) networks. It supports voice calls, SMS messaging, GPRS data service, and GPS functionality. With this module, it is possible to create a basic phone. The module is controlled via UART using AT commands and supports logic levels of DC5-9V. Features: Support the GSM / GPRS four bands, including 850,900,1800,1900MHZ Support China Mobile and China Unicom’s 2G GSM network worldwide GPRS Class 10 Support voice calls Support SMS text messaging Support GPRS data traffic, the maximum data rate, download 85.6Kbps, upload 42.8Kbps Supports standard GSM 07.07,07.05 AT commands and extended commands Ai-Thinker Support GPS and AGPS Supports two serial ports, a serial port to download an AT command port AT command supports the standard AT and TCP / IP command interface Support digital audio and analog audio support for HR, FR, EFR, AMR speech coding Support ROHS, FCC, CE, CTA certification

Witty Cloud ESP12F ESP8266 Serial WiFi Development Board (Mini Node MCU Module) The ESP8266/ ESP-12F Module/ Serial WIFI Witty Cloud Development Board + MINI nodeMCU is a cheap and small Wifi transceiver, a perfect solution for Home Automation and IoT applications. It can be the replacement for your NRF24L01, it can talk to your Wifi router directly through the UART MCUs (Rx, Tx). The upper board is the main board which consists of an ESP-12F module where the ESP8266 Wi-Fi microcontroller is located, an RGB LED, an LDR, a button, a micro USB port, and a 3.3V voltage regulator. The lower board mounts the CH340G USB-to-UART module that allows connection with a computer to the ESP8266 for programming the flash or for seeing debug messages. There are other two buttons RST (reset) and FLASH, and a micro USB port. It has an LDR and a WS2812 LED already on board for your projects. The esp board comes with a CH40 micro USB module to program it. The system equips ESP8266 and its features are: energy-saving VoIP quickly switch between the sleep/wake patterns, with low-power operation adaptive radio bias, and front-end signal processing functions. Witty Cloud ESP12F Module Circuit Diagram: ESP8266 Serial WiFi Witty Cloud Circuit Diagram Applications: Home Automation. IoT Devices.

WS2812 12 Bit RGB LED (round) The WS2812 12-bit RGB LED is a great way to add color to your Arduino projects. You can use it to create cool lighting effects, or add it to your existing project to add a splash of color. The WS2812 LED Strip is very easy to use, and its price is very reasonable.  The WS2812 RGB LED Ring light is can be easily used with Arduino Uno microcontroller. WS2812 5050 RGB 12-LED Round Lamp Development Board - Black Round and round and round they go! 12 ultra bright smart LED NeoPixels are arranged in a circle with (50mm) outer diameter. The rings are "chainable" - connect the output pin of one to the input pin of another. Use only one microcontroller pin to control as many as you can chain together. Each LED is addressable as the driver chip is inside the LED. check out : WS2812 8 Bit RGB LED (straight)