Relay4Unit

4-Relay unit is an integrated 4-way relay module which can be controlled by I2C protocol. The maximum control voltage of each relay is AC-250V/DC-28V, the rated current is 10A and the instantaneous current can hold up to 16A. Each relay can be controlled independently, each on it’s own. Each relay has status (LED) indictor as well to show the state of the relay at any given time.

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Relay4Unit

Micropython Example:

import os, sys, io
import M5
from M5 import *
import time
from hardware import *
from unit import Relay4Unit
i2c = I2C(1, scl=33, sda=32)
relay = Relay4Unit(i2c)
for i in range(1, 5):
relay.set_relay_state(i, 1)
relay.set_led_state(i, 1)
time.sleep(1)
relay.set_relay_state(i, 0)
relay.set_led_state(i, 0)
time.sleep(1)

class Relay4Unit

Constructors

class Relay4Unit(i2c: I2C, address: int | list | tuple = 0x26)

Initialize the Relay4Unit object.

参数:

  • i2c (I2C) – I2C port to use.

  • address (int) – I2C address of the Relay4Unit.

UIFLOW2:

init.svg

Methods

Relay4Unit.set_mode(mode: int)

Set the mode of the relay.

参数:

mode (int) –

The mode of the relay

Options: - Relay4Unit.ASYNC_MODE: async - Relay4Unit.SYNC_MODE: sync

UIFLOW2:

set_mode.svg

Relay4Unit.get_mode() → int

Get the mode of the relay.

返回:

The mode of the relay

Options: - Relay4Unit.ASYNC_MODE: async - Relay4Unit.SYNC_MODE: sync

UIFLOW2:

get_mode.svg

Relay4Unit.get_led_state(n: int) → int

Get the state of the LED.

参数:

n (int) – The number of the LED.

UIFLOW2:

get_led_state.svg

Relay4Unit.set_led_state(n: int, state: int) → None

Set the state of the LED.

参数:

  • n (int) – The number of the LED.

  • state (int) – The state of the LED.

UIFLOW2:

set_led_state.svg

Relay4Unit.get_relay_state(n: int) → int

Get the state of the relay.

参数:

n (int) – The number of the relay.

返回:

The state of the relay.

UIFLOW2:

get_relay_state.svg

Relay4Unit.set_relay_state(n: int, state: int) → None

Set the state of the relay.

参数:

  • n (int) – The number of the relay.

  • state (int) – The state of the relay.

UIFLOW2:

set_relay_state.svg

Relay4Unit.set_relay_all(state: int) → None

Set the state of all the relay.

参数:

state (int) – The state of the relay.

UIFLOW2:

set_relay_all.svg