Set up your AudioMoth

A note on AudioMoths

AudioMoths are an affordable and effective survey tool. However due to their low cost they are also fragile and need to be handled with care.

In particular, the white slider switch can be broken, the glue which holds the circuit board to the battery holder can come unstuck, and the weatherproof mesh on the case can come loose. To help keep your AudioMoth in working order:

  • Be gentle when inserting and removing the AudioMoth from the weatherproof case.
  • Slide the switch gently.
  • When removing or inserting batteries, hold the battery holder, not the circuit board.
  • When inserting or removing the SD card hold the circuit board, not the the battery holder.
  • Transport the Audiomoth and weatherproof case inside the padded envelope you received it in.

To set up your AudioMoth

To set up your AudioMoth for the British Bat Survey use the 'chime' which plays when you press the button below. The recording settings for the British Bat Survey are embedded in the chime. When the AudioMoth hears the chime it applies the correct settings.

  1. Set the switch to USB/OFF.
  2. Insert a blank microSD card. The SD card should be inserted print facing down.
  3. Install three AA batteries, then check battery power by sliding the switch to DEFAULT and then back to USB/OFF. The red LED will flash from 1 to 4 times depending on battery voltage, with 4 indicating full. Please replace the batteries if the LED flashes only once or twice, as they will not have enough power to last the night. If the battery voltage is below the minimum threshold the red LED will flash rapidly for about 2 seconds, and you should replace the batteries immediately.
  4. Open this webpage on a device that can play a sound, such as a computer with speakers, a laptop, tablet or smartphone. Check that your device is not set to silent.
  5. Move the switch on the AudioMoth to DEFAULT. The green LED will flash every two seconds while it waits for the chime.
  6. Push the button below to play the chime.
  7. If the configuration has been successful the green LED will stay on continuously. You may need to experiment a bit with different distances and volume settings until the green LED stays on. You can push the 'play chime' button as many times as you need.
  8. Once the AudioMoth has been successfully configured, move the switch to USB/OFF to switch the AudioMoth off.

Important note - If the batteries are removed or dislodged the AudioMoth will lose its setting, indicated by the red LED flashing (if the red LED is lit continuously this is not an error, it indicates the AudioMoth is recording). If this happens the AudioMoth will need to be reconfigured following the steps above.

Watch the video below to see how to configure an AudioMoth using the chime (coming soon).

Next: Carrying out a survey