OpenBuilds V-Slot/C-Beam Wheel Kit

1 Channel 12V Relay Module with Optocoupler The ADIY 1-Channel Relay Module with Optocoupler operates on a 12V power supply. This module offers bidirectional isolation and enables control of the relay pull through a choice of high or low levels, based on user requirements. It features a genuine high-quality power relay, a subminiature package optocoupler, a high-power high-voltage transistor, and red and blue signal indicators. The module's layout board is thoughtfully designed to ensure comprehensive stability and reliable performance, making it suitable for a wide range of power control applications. The maximum load for the normally open interface is AC 250V/10A and DC 30V/10A. Moreover, it utilizes high-quality ultra-small optocouplers with excellent anti-interference capabilities and stable performance, requiring only a trigger current of 3mA. Features: Equipped with high-current relay 10A@250VAC / 10A@30VDC It can control both AC and DC appliances such as Solenoids, Motors, lights, fans, etc. High-quality screw terminals (Terminal Block) provided (C, NC, NO) for quick and easy connection A freewheeling diode to protect your microcontroller Input Signal Pin connected to Burg stick for easy accessibility LED status indicators to indicate the relay ON/OFF status Mounting holes provided Signal input with a high-level signal, the common and often start conduction; The relay can directly control all kinds of equipment and load; One often opened a normally closed contact; Blue KF301 terminal line more convenient. Also check the Single CHANNEL 12V RELAY MODULE 30AMP available on Iotcart. The relay module is capable of actuating 240VAC/30A circuits safely and offers output modes for both Normally Open and Normally Closed configurations

1-CH 12V Relay Board This is a small and easy to use 1 channel relay board that operates on 12V. Use it to control one 240V power appliance directly from Arduino, Raspberry Pi, and other microcontrollers or low voltage circuits. Perfect for switching 240V appliances – lights, fans, etc, and even high-power motors at lower voltages. The board uses a high-quality relay, which can handle a maximum of 10A/250 V AC or 15A/125V AC. Each relay has all three connections – Common, Normally Open, Normally Closed brought out to 3 pin screw terminals which make it easy to make and remove connections. The board has a power indication and a relay status LED to ease debugging. The board can accept control inputs within a wide range of voltages from 4V to 12V. Power input and relay control signals are brought to header pins on the board. Hence, the board can be easily interfaced with our development boards using our female-to-female jumper wires.

12V 4CH Relay Board This is a 12V 4-Channel Relay interface board. It can be used to control various appliances and other equipment with large current. The 4 channel relay board can be controlled directly by Micro-controller (Arduino, 8051, AVR, PIC, DSP, ARM, ARM, MSP430, TTL logic). T his 12V relay switch is useful in creating a central hub from where multiple remote loads can be powered. It is useful for tasks like home automation where the module can be placed in the main switchboard and can be connected to loads in other parts of the house and can be controlled from a central location using a microcontroller. read our blog explaining the relay module working principle , which provides detailed information about relay modules, their working principles, and various aspects related to their construction and applications. Applications: Switching mains loads Home automation Battery backup High current load switching

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.

1 Channel 5V Active Low Relay Board The 5V 1-channel relay module works with a 5V to 12V TTL control signal. It is perfect for controlling home appliances and for use in microcontroller projects. the 5V relay module can handle a 220V AC load, so you can use it to control motors, LED strips, or other devices. This single-channel relay acts like a regular switch, keeping its contacts separate from the circuit it controls. It has an LED light to show when the relay is ON and accepts input from a 3-5V microcontroller. The output terminals connect to the relay, and there’s a 2x3-pin male header for easy wiring. You can power it with an external 5V source or through the male header. The 5V relay module can handle up to 5A at 240V AC. Note : It is important that the microcontroller shares ground with the relay board along with other control signals else it will not be able to control the relay. Also, check the other 5V Relays Collections . Check out our wide variety of Relays including 5V, 12V, and Solid state relay switches. Features: Input signal can come directly from a microcontroller Works at 3V or 5V to control relays Can switch a variety of AC or DC high voltage loads Suitable for SCM development and home appliance control 5V~12V TTL control signal for DC/AC control LED indication of relay ON Contact rating: 5A at 240V AC Direct input from 3-5V microcontroller for relay control Provision of 2x3Pin male header for wire connection Powered from external 5V or from the male header Relay contact is isolated from the driven circuit Applications: Home automation Robotics Light control Motor control Solenoid control Valve control Process control Alarm systems Access control systems Surveillance systems DIY projects Pinout:

12V Relay Cube This is a 12V Relay Cube. This cube relay has an operating voltage of 12V and has a max current capacity of 7A. This makes it most suitable for use in microcontroller-based devices like Arduino. It is an SPDT 12V Relay. Relays are used where it is necessary to control a circuit by an independent low-power signal, or where several circuits must be controlled by one signal. APPLICATIONS: Control Solenoids Motors Bulbs and Lamp Home Automation Projects Freewheeling diode to protect your microcontroller Also check 12V 1 Channel Relay Module with a 10A switching capability. It is an electronic module designed to control an electrical circuit using an electromagnetic switch.

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 CH 12V Relay Board This 2 Road/Channel Relay Module (with light coupling) 12V module meets the safety standard as control areas and load areas have the isolation groove. It is important that the microcontroller share ground with the relay board along with other control signals else it will not able to control the relay.  Very useful project for applications like Micro-Controller based projects, Remote controllers, Lamp on Off, and any circuits which required isolated high current and high voltage switching by applying any TTL or CMOS level voltage. read more : What is Relay? - Working, Applications & Types Features: Dual Channels: Allows control of two separate devices. High Power Handling: Each relay can handle up to 10A at 120V AC or 7A at 240V AC. Optocoupler Isolation: Provides electrical isolation between the control circuit and the high-power devices. Compatibility: Can be used with various microcontrollers like Arduino, AVR, PIC, and ARM. Screw Terminals: Easy connection for the relay outputs. LED Indicators: Visual feedback for relay status. Compact Design: Small and lightweight, making it easy to integrate into projects. Wide Range of Applications: Suitable for controlling AC and DC appliances such as lights, fans, motors, and solenoids. Applications: Widely used for all MCU control, industrial sector, PLC control, smart home control Can be controlled directly by a wide range of microcontrollers

12V 30A T90 Relay This is a 12V 30A T90 Relay. It operates on a 12V DC signal and max current capacity of 30A. This relay is of T90 type and is an SPDT relay. Hence, it has 3 terminal connections, NO, NC and COM. It has two COM terminals, both of them are short to each other.

12V 1 Channel Relay Module (10Amp) A 12V 1-channel relay module is an electronic module that controls an electrical circuit with an electromagnetic switch. To turn on or off devices that operate at 10A or lower current, it can be controlled by a microcontroller, a switch, or other digital circuits. This is a small and simple one-channel relay board that runs on 12V. It can be used to directly operate one 240V power appliance from Arduino , Raspberry Pi , and other microcontrollers or low voltage circuits. Ideal for switching 240V appliances such as lights, fans, and so on, as well as high-power motors at lower voltages. A 12V power source, a control circuit, and a relay with a switching capability of 10A are typical components of a relay module. You can use the control circuit to transmit a digital signal (high or low) to the relay, which will then open or close the circuit. Relay modules are widely used in automation and control systems such as home automation, robotics, and industrial control. They are also utilised in automotive applications, such as regulating lighting and other electrical components in a vehicle. Also check 12V 4-Channel Relay Board offered by Iotcart. The relay board is designed to control various appliances and equipment with a large current, and it can be directly controlled by Micro-controllers such as Arduino, 8051, AVR, PIC, DSP, ARM, MSP430, and TTL logic.

12V 2 Channel Relay Board 2 channel 12V relay module Relay outputs: NO: normally open relay interface COM: common interface relays. NC: normally closed relay interface Working voltage 12V High / Low-level changeable Fault-tolerant design, even if the control line is broken, the relay will not operate.

OpenBuilds Plastic V-Groove Pulley Wheel with 625ZZ Bearing The OpenBuilds Plastic V-Groove Wheel Pulley with Bearing is designed for smooth, stable, and precise linear motion in 3D printers, CNC machines, and various DIY motion systems. Made from high-quality POM plastic paired with a durable 625ZZ steel bearing, this pulley ensures long-term performance with minimal friction and wear. Whether you're upgrading an existing machine or assembling a new one, this wheel delivers reliable and consistent motion on V-slot rails. Engineered to work efficiently in temperatures ranging from –40°C to 100°C, it maintains structural integrity even during extended operation. The lightweight construction, combined with stainless-steel bearing support, makes it a go-to choice for makers, hobbyists, and professionals working on 3D printing or precision mechanical projects. Features: High-quality POM plastic wheel paired with a 625ZZ stainless-steel bearing for smooth and low-friction movement. Designed with a V-groove profile, making it perfect for V-slot extrusions and linear motion assemblies. Suitable for continuous use in harsh conditions, with an operating temperature range of –40°C to 100°C. Provides stable, noise-free performance ideal for 3D printers, CNC machines, and robotic mechanisms. Compact and lightweight design that ensures easy installation and reliable long-term operation.

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.

V5 Heat Break Hotend Throat Without Teflon Tube for 1.75mm Filament – 29mm This V5 Heat Break Hotend Throat (29mm) is designed for makers who want smoother, more reliable 3D printing without frequent clogs or heat-creep issues. Crafted from high-grade stainless steel, it provides excellent thermal isolation, helping maintain stable extrusion temperatures when printing materials like PLA and ABS. Since it does not use a PTFE liner, the heat break offers better durability and long-term performance, making it a great upgrade for any V5-compatible hotend. Whether you're using a Reprap Prusa i3 or another 1.75mm-filament 3D printer, this heat break ensures consistent flow thanks to its factory-polished internal bore. The smooth inner surface reduces friction and prevents jams, giving you a cleaner printing experience. If you're looking for a reliable, safer, and long-lasting heat break designed for precision extrusion, this stainless steel V5 model is a dependable choice. Features: Designed for V5 hotends and fully compatible with 1.75mm PLA and ABS filaments for smooth and stable extrusion performance. Made from high-quality stainless steel to minimize heat creep and improve temperature control during printing. Factory-polished internal bore provides a friction-free filament path, reducing the chances of clogs or jams. Durable PTFE-less construction ensures long service life and reliable performance under continuous usage. Ideal replacement or upgrade part for Reprap Prusa i3 and other 3D printers using 1.75mm filament systems.

Single Start 8mm Copper Nut The Single Start 8mm Copper Nut is a precision-machined brass motion component designed to deliver smooth, accurate, and reliable linear movement in 3D printers, CNC machines, and custom automation setups. Built with an 8mm internal thread and a single-start design, it ensures consistent travel per rotation when paired with an 8mm lead screw. The durable copper alloy body offers excellent wear resistance, low friction, and long operational life, making it ideal for high-precision motion control systems. Whether you’re upgrading a 3D printer, building a CNC platform, or working on robotics and mechanical automation, this single-start copper nut provides the stability and performance you need. Its corrosion-resistant construction, easy installation, and compatibility with stepper-driven linear assemblies make it a dependable choice for makers, engineers, and DIY builders. Features: Made from high-quality copper alloy for superior strength, smooth operation, and long-term durability. Single-start 8mm threaded design ensures controlled, precise, and consistent linear movement. Perfectly compatible with 8mm lead screws used in 3D printers, CNC routers, robotics, and linear motion systems. Low-friction material enables quieter operation and reduces wear over time. Corrosion-resistant construction maintains accuracy even under continuous load. Easy to install and ideal for stepper motor–driven guide rails and compact motion assemblies.