Arduino MKR IoT Carrier Rev2 ABX00073 Meet the Arduino MKR IoT Carrier Rev2, your go-to tool for creating exciting Internet of Things (IoT) projects easily. This carrier works with any board from the MKR family, so you don’t need extra parts to get started. Here’s what you can do with the MKR IoT Carrier Rev2: Build Environment Monitors: Use the built-in sensors to keep track of things like temperature, humidity, air pressure, and air quality. Monitor environmental changes and detect movement with ease. Using Grove connections, you can add more analog or I2C modules to your project. Data can be saved to an SD card or uploaded immediately to the Arduino IoT Cloud for real-time monitoring and analysis. Create Custom Interfaces: If you want to display sensor information or make your own controls, you can use the colorful OLED screen. This screen allows you to set up menus and options. Plus, you can use the LEDs and buzzer to give feedback and make your project more interactive. Control Devices: You can use the two built-in relays to manage electronic devices that use up to 24 volts. This means you can turn things like lamps on or off remotely using the Arduino IoT Cloud app. You can also use the data from the sensors to control these devices based on what’s happening in your environment. Differences between MKR IoT Carrier Rev2 and MKR IoT Carrier: Some changes have been made to the sensors and components in this updated version Some sensors have changed: The humidity sensor (HTS221) and the barometric pressure sensor (LP22HB) have been replaced with the new BME6688 sensor. The IMU (LSM6DS3) has been upgraded to the LSM6DSOX. Additionally, some components have been repositioned: A new reset button has been added. The relay connectors have been rotated 90°. The light sensor (APDS-9960) has been moved to a new position. The relay control pins have been changed to pins 1 and 2. The Grove connector assignment has shifted from pin A5 to pin A6. Check out: Arduino MKR IoT Carrier Rev2 Cheat Sheet Key Features: BME6688 sensor for temperature, humidity, and pressure; LSM6DSOX IMU; and APDS-9960 light sensor. Color OLED screen for custom interfaces. Grove connections for attaching additional sensors. SD card slot with Arduino IoT Cloud connectivity. Two relays for devices up to 24 volts, including remote control via the Arduino IoT Cloud app. New reset button, relay connector rotation, light sensor repositioning, relay pin updates, and Grove connector assignment adjustment. Pin Diagram:

16 Channel 12V Relay Module Board This is a 12V 16 Channel Relay Module with Light Coupling LM2576 Power Supply, Be able to control various appliances and other equipment with a large current. It can be controlled directly by a Microcontroller (Arduino, 8051, AVR, PIC, DSP, ARM, MSP430, TTL logic). This is a 12V 16-Channel Relay interface board and each one of the individual relays needs 15-20mA Driver Current. The board features an indication LED for Relay output status and the standard interface that can be controlled directly by many widely used microcontrollers like Arduino etc. The 12V electromechanical relay module with an AC contact capacity of 250V which also include light coupling protection(optocoupler) for isolation of control circuitry. The plate load power module doesn’t need an external power supply. It supports all SCM drives. The LM2596S buck chip in this relay module shows a slight fever which is a normal phenomenon as relays, long working hours have normal fever characteristics. 4 relay load power to give leave some margin, should avoid high-power (about 2000W) and long working environment, there will be some impact on the life of the product. Read our blog explaining What are Relays - Working, Applications & Types Applications: Widely used for all MCU control Industrial sector PLC control Smart home control.

Cytron 10Amp 5V-30V DC Motor Driver The Cytron 10A 5V-30V DC Motor Driver (MD10C) is a robust and versatile solution designed to control brushed DC motors with ease and precision. As an upgraded version of the MD10B, this Cytron 10A Motor Driver can deliver up to 10A continuously (and up to 13A peak), making it ideal for high-current applications. It supports a wide operating voltage range of 5V to 30V, accommodating various power supply configurations. The Cytron DC Motor Driver incorporates a full solid-state design, eliminating mechanical relays to provide faster response times and improved longevity. Supporting both locked-antiphase and sign-magnitude PWM signals, it offers flexibility in motor control logic. Moreover, the on-board manual/test buttons make setup and testing effortless, even without a microcontroller. Whether you're building robots or automating systems, this 10A DC Motor Driver delivers reliable and efficient performance for your project. Features: Bidirectional control for a brushed DC motor (single channel). Support motor voltage ranges from 5V to 30VDC. There is no reverse polarity protection at Vmotor, so please double-check the polarity before powering up. Regenerative braking Maximum current: up to 13A continuous and 30A peak (10 seconds). 3.3V and 5V logic level input; compatible with Arduino and Raspberry Pi. Solid-state components offer faster response times and eliminate the wear and tear of mechanical relays. Fully NMOS H-Bridge for improved efficiency, no heat sink required. Speed control PWM frequency up to 20KHz (output frequency equals input frequency). PWM operations can be Locked-Antiphase or Sign-Magnitude. **Note that it is not"RC PWM". The new MD10C may be powered from a single power source, and no additional Vin is required.

Cytron 10Amp 5V-30V Dual Channel DC Motor Driver The Cytron 10A motor driver (MDD10A) is a robust and user-friendly dual channel motor driver designed to control two brushed DC motors independently. Supporting a wide operating voltage range of 5V-30V, this 10A DC motor driver delivers a continuous current of up to 10A per channel, making it suitable for high-power applications. As a part of Cytron's reliable motor driver lineup, the Cytron motor driver 2 channels model MDD10A features solid-state components that ensure fast response and long-term reliability by eliminating the wear associated with mechanical relays. It supports both locked-antiphase and sign-magnitude PWM signals, offering flexible control for various motor operations. With presoldered terminals and built-in test buttons, it can even be operated without a microcontroller, making it an ideal choice for beginners and advanced users alike looking for a dependable 5V-30V DC motor driver. Features: Bidirectional control for two brushed DC motors. Support motor voltages ranging from 5V to 30VDC (Rev2.0). There is no reverse polarity protection at Vmotor, so please double-check the polarity before powering up. Each channel can handle a maximum current of 10A continuous and 30A peak (10 seconds). Supports 3.3V and 5V logic level inputs (for PWM and DIR), and is compatible with Arduino and the Raspberry Pi. Solid-state components have a faster response time and eliminate the wear and tear of mechanical relays. For increased efficiency, a fully NMOS H-Bridge is used, with no heat sink required. Regenerative braking. Speed control PWM frequency up to 20KHz (output frequency equals input frequency). PWM operations can be Locked-Antiphase or Sign-Magnitude. On each channel, there are two activation buttons for manual or quick testing.

Fofek SSR-40DA Input 3-32VDC Output 24-380VAC Solid State Relay Solid state relays have several advantages over mechanical relays. One of the advantages is that they can be switched by a lower voltage and at a lower current than most mechanical relays. This is DC To AC SSR-40DA Solid State Relay Module 3-32VDC/24-380VAC 40A. A solid state relay (SSR) allows you to control high-current AC loads from lower voltage DC control circuitry. Solid state relays have several advantages over mechanical relays. One such advantage is that they can be switched by a much lower voltage and at a much lower current than most mechanical relays. Also, because there are no moving contacts, solid state relays can be switched much faster and for much longer periods without wearing out. This particular SSR can switch current loads of up to 40A with a 3-32V DC input and a zero cross trigger control method. Each one of these relays is equipped with four screw terminals (for use with ring or fork connectors) and a plastic cover that slides over the top of the relay to protect the terminals.

FOFEK 24V-380V 40Amp DA Solid State Relay Module This is SSR-40DA Solid State Relay Module 3-32VDC/24-380VAC 40A. A solid-state relay (SSR) allows you to control high-current AC loads from lower-voltage DC control circuitry. Solid-state relays have several advantages over mechanical relays. One such advantage is that they can be switched by a much lower voltage and at a much lower current than most mechanical relays. Also, because there are no moving contacts, solid-state relays can be switched much faster and for much longer periods without wearing out. This particular SSR can switch current loads of up to 40A with a 3-32V DC input and a zero cross-trigger control method. Each one of these relays is equipped with four screw terminals (for use with ring or fork connectors). 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. Package Include: 1 x FOFEK 24V-380V 40 DA Solid State Relay Module

Fotek Solid State Relay SSR-25DA 25A This is DC To AC SSR-25DA Solid State Relay Module 3-32VDC/24-380VAC 25A. A solid-state relay (SSR) allows you to control high-current AC loads from lower voltage DC control circuitry. Solid-state relays have several advantages over mechanical relays. Solid-state relays have several advantages over mechanical relays. This particular SSR can switch current loads of up to 25A with a 3-32V DC input and a zero cross trigger control method. Each one of these relays is equipped with four screw terminals (for use with ring or fork connectors) and a plastic cover that slides over the top of the relay to protect the terminals. Also check Fotek SSR-40DD Input 3-32VDC Output 5-60VDC Solid State Relay . The relay allows you to control high-current AC loads with a lower voltage DC control circuit. It has a 3-32V DC input and a 5-60V DC output.

12 V 1 Channel Relay Board Relay board module is used for controlling higher current loads from your microcontroller development board, pc parallel port or Arduino Uno. This board has one (1) on-board relay which can switch up to 7amps. Relays terminals (c, nc, no) are accessible through screw terminals which makes wiring up the board very easy. The relay is safely driven by transistor bc547 hence your input device, such as Arduino, is protected from relay circuit. There is a freewheeling diode which will further protect your microcontroller from relay kickback. This is a 12v 1-channel relay interface board which can be controlled directly by a wide range of microcontrollers such as Arduino, avr, pic, arm, 8051 and so on.

12V 8 Channel Relay board This 12V 8 Channel Relay board meets the safety standard as control areas and load areas have the isolation groove. Optical coupling isolation module. The triggering of the 8-Channel Relay Module is reliable and more stable. The double FR4 circuit board design is a high-end SMT process. It has power and relay operation instructions. Relays terminals (C, NC, NO) are accessible through screw terminals which makes wiring up the board very easy. The inputs of the 8 Channel 12V Relay Module are isolated to protect any delicate control circuitry. A wide range of microcontrollers such as Arduino, AVR, PIC, ARM, and so on can control it. The use of such a high-voltage relay eliminates the risk of heating up the relay as electromechanical relays limit the current consumption in accordance with a voltage rating. Also, read our blog on What is Relay in Electrical explaining what is it, how does it works, its construction, different types of relays, and applications. APPLICATIONS: Control Solenoids Motors Bulbs and Lamp smart home control Freewheeling diode to protect your microcontroller. Also check 12V 16 Channel Relay Module with Light Coupling LM2576 Power Supply, suitable for controlling various appliances and equipment with a large current. It can be directly controlled by microcontrollers such as Arduino, 8051, AVR, PIC, DSP, ARM, MSP430, and TTL logic. Each relay on the board requires 15-20mA Driver Current, and there is an indication LED for Relay output status. The module features light coupling protection (optocoupler) for the isolation of control circuitry.

2 Channel 5V Relay Module with Optocoupler This is a 2-channel 5V relay module 10A. It can be used to control various appliances and other equipment with a large current. This 5V 2 channel Relay interface board can be controlled directly with 3.3V or 5V logic signals from a microcontroller (Arduino, 8051, AVR, PIC, DSP, ARM, ARM, MSP430, TTL logic). Also check SLA-05VDC-SL-A 4Pin 30A Power Relay Also, check 12V 2 channel relay board sold by Iotcart. The board has two channels and can be used for various applications. It has a working voltage of 12V. Key Features: 5V relay interface board. Compatible with microcontrollers like Arduino, AVR, PIC, and ARM. Controlled by a low-level trigger (3.3-5VDC). Activates normally open (NO) or normally closed (NC) contacts. Applications: Home automation Robotics Control Control doors and windows via the windows system Read our blog explaining the relay operation , which provides a comprehensive overview of the working principles of relays in electronic circuits.