Troubleshoot Pump Output

This guide will test whether the pump output is wired up properly.

Upload the Blink Sketch

Arduino Version

Syntax:

• sh upload-blink-sketch.sh [DigitalPin] [Port]

Example:

• sh upload-blink-sketch.sh 11 ttyUSB0

The output should look something like this:

ESP12 WiFi Version

Syntax:

• sh upload-blink-sketch.sh [DigitalPin] [Port]

Example:

• sh upload-blink-esp-sketch.sh 13 ttyUSB0

Note: The physical pin 11 on the Wemos D1 board is called pin 13 in the code. This is not a typo.

The output should look something like this:

Check the Pump Output

Watch the LED on the MOSFET module to make sure the pump pin is blinking on and off.

The LED on the MOSFET module should now be flashing on:

... and off:

If the LED is flashing at 1 second intervals then it appears the MOSFET module is wired up correctly.