PicoRelay8 for Raspberry Pi Pico [W]

The PicoRelay8 allows eight 28V DC / 10 Amp Normally Open relays to be controlled using a Raspberry Pi Pico [W].

Each relay is controlled by a Pico GPIO pin - setting the pin high will close the relays contacts allowing you to turn on the device and setting the GPIO pin low will open the contacts turning it off.

Pico GPIO	Relay Control
GP13	A
GP10	B
GP5	C
GP2	D
GP3	E
GP4	F
GP11	G
GP12	H

The HF3FF/005-1HST relays are rated for 10 Amps at 28 Volts DC and have Silver Tin Oxide (AgSnO2) contacts for better switching of high inrush currents.

The PicoRelay8 MUST NOT BE USED TO SWITCH MAINS VOLTAGES.

When all 8 relays are energised the PicoRelay8 will use just under 500mA so please ensure the power supply/computer is capable of supplying 500mA or ensure all relays are not energised together.

Code Examples

CircuitPython

The example below toggles the Relays on one at a time from A to H and then turns them off one at a time from A to H.

import board
import digitalio
import random
import time

# Number of seconds to wait between toggling
delay = 0.3

# Setup GPIO used for Relay control
relay = {}
relay[0] = digitalio.DigitalInOut(board.GP13) # Relay A
relay[1] = digitalio.DigitalInOut(board.GP10) # Relay B
relay[2] = digitalio.DigitalInOut(board.GP5)  # Relay C
relay[3] = digitalio.DigitalInOut(board.GP2)  # Relay D
relay[4] = digitalio.DigitalInOut(board.GP3)  # Relay E
relay[5] = digitalio.DigitalInOut(board.GP4)  # Relay F
relay[6] = digitalio.DigitalInOut(board.GP11) # Relay G
relay[7] = digitalio.DigitalInOut(board.GP12) # Relay H

# Set GPIO as outputs
for i in range(0,8):
	relay[i].direction = digitalio.Direction.OUTPUT

# Loop counter
cnt = 0

while 1:
	# Turn all Relays on
	for i in range(0,8):
		relay[i].value = True
		print( "On: "+str(i)+" loop: "+str(cnt) )
		time.sleep(delay)
	# Then turn all relays off
	for i in range(0,8):
		relay[i].value = False
		print( "Off: "+str(i)+" loop: "+str(cnt) )
		time.sleep(delay)
	cnt = cnt + 1