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Green circuit board with eight black relay modules and a 40-pin GPIO header

LORDWORLD

LORDWORLD 8 Channel Relay HAT development board

SKU CH-HMJ1-HHHYP

An 8-channel relay HAT with 40-pin GPIO header drives loads up to 5 A at 250 V AC or 30 V DC and supports custom pin mapping via jumpers

  • Control mains appliances safely
  • 5 A at 250 V AC or 30 V DC switching
  • Fits Pi 40-pin GPIO and Jetson Nano
  • Jumper-selectable relay control pins
  • Python, wiringPi, bcm2835, web and cron examples included

Product Purpose

The LORDWORLD 8 Channel Relay HAT is a development board that adds eight independently switchable relays to a Raspberry Pi or Jetson Nano via the standard 40-pin GPIO header. It enables makers and engineers to control mains-powered appliances or low-voltage DC loads directly from their single-board computer.

Suitable Users And Limits

This board suits hobbyists building home-automation projects, students learning GPIO control, and prototypers who need flexible pin mapping through the onboard selection jumpers. It is not for applications that require more than eight switched circuits, isolated power domains per relay, or switching capacities beyond 5 A at 250 V AC or 30 V DC.

Deciding Specification

Each relay is rated for a maximum load of 5 A at 250 V AC or 5 A at 30 V DC, which determines whether the board can safely drive your intended heaters, lamps, motors or other actuators.

Puntos fuertes

  • Control mains appliances safely
  • 5 A at 250 V AC or 30 V DC switching
  • Fits Pi 40-pin GPIO and Jetson Nano
  • Jumper-selectable relay control pins
  • Python, wiringPi, bcm2835, web and cron examples included

Especificaciones

BrandLORDWORLD

Preguntas sobre este artículo

How can I verify the relays are switching correctly after wiring the HAT to a Raspberry Pi 40-pin GPIO header?

Apply 5 V power, run the provided Python or wiringPi example, and listen for the audible click of each relay while measuring 250 V AC or 30 V DC across the output terminals to confirm 5 A switching.

What ships in the box and what must I source separately to start controlling appliances?

The board with eight relays, a 40-pin GPIO extension header, and relay control pin selection jumpers are included; you must supply a Raspberry Pi or Jetson Nano, 5 V power, and the loads you intend to switch.

Which version should I choose if I need web-based scheduling for home automation?

Select the standard 8-channel model — it includes python-bottle examples for webpage control and crontab scripts for cron job scheduling out of the box.

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