Disconnect Relays

Intro

On the NEXTuino RISE, the relays are connected in parallel to the digital outputs D0–D5 and thus are named D0–D5. When you switch a digital output, the corresponding relay automatically switches too. If you want to operate them independently, you can disconnect the relay outputs by removing the solder line on the NEXTuino relay board.

Relay maximum switching current: 6A @250V/AC or 6A @30V/DC. Relay outputs are potential free.

Hardware Required

  • NEXTuino RISE
  • 12/24V DC Power supply
  • Knife or scalpel

Note: Pin header is working on 5V TTL levels. Voltage levels over 5.5V can damage the NEXTuino permanently.

Code

To check if the relay switches together with the digital output:

#include <NEXTuino.h>

void setup() {
  pinMode(NEXTuino_D0, OUTPUT);
}

void loop() {
  digitalWrite(NEXTuino_D0, HIGH); delay(100);
  digitalWrite(NEXTuino_D0, LOW);  delay(100);
}

Steps to Disconnect Relays

Step 1

Remove the NEXTuino RISE cover by lifting the marked sides with a flat-head screwdriver.

Step 2

Remove the two screws holding the NEXTuino relay board in place and separate the device from the bottom case.

Step 3

Turn to the bottom side of the NEXTuino relay board and locate the solder connection section in the right corner.

Step 4

Use a sharp knife or scalpel to remove the solder line of the desired digital output. Make a cut on each side of the marked square, then remove the middle part.

The relay for that output is now disconnected from the digital output.

Note: You can always reconnect the relay outputs by soldering a 0Ω SMD resistor or other conductor to reestablish the connection.

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