TK-Talkie Troubleshooting

Having problems? We're here to help!

Please take a look to see if any of the topics listed here help with your issue. If not, please contact us so we can help you get it fixed!

My Microphone Is Not Working

99.99% of the time this is simply a microphone calibration issue. The TK-Talkie allows you to customize when your microphone turns on while you are talking and when it should turn off when you stop talking. This allows you to customize the microphone performance according to your specific needs (i.e. type of costume, fans in the helmet, etc.)

First, test and make sure the microphone works on something else. If it does, try the options below.

Watch this video on how to calibrate your microphone.

WAV Files Are Not Playing

Sound Effects Play Before I Stop Speaking

This usually means the "voice-off" setting is too high or the mic needs to be calibrated.

Watch this video on how to calibrate your microphone.

Sound Effects Do Not Play

Watch this video on how to calibrate your microphone.

There Is A Lot Of Static

Low Volume Output

If you are experiencing low volume output with your TK-Talkie, there are several settings you can adjust to increase it. If none of these work, then check the wiring to your microphone jack on your TK-Talkie to make sure all connections are solid.

For higher volumes with reduced feedback, use the line-out jack of your TK-Talkie connected to the line-in port of your speaker. You can use the headphones port on your TK-Talkie, but since that is an amplified (hot) signal, when you connect to an amplified speaker such as the Aker 1505 or Aker 1506, you will have a very hot signal which could be prone to more feedback (this applies to any microphone/speaker setup.) You will still be able to get a very loud, feedback free volume using the speaker port, but if you want to be able to crank it up even more, try out the line-out jack.

Try the following adjustments:

Beeps While Startup Up or In Use

This indicates an issue with the SD Card:

Most likely causes are:

If you think your card may have become corrupted, use a utility like SD Card Formatter to reformat it. DO NOT use built-in system formatting tools as they are not made for SD cards.

My TK-Talkie Shuts Off After a Few Seconds

The Teensy board can only handle current up to 1 Amp, and will shut down to prevent damage if it receives more than that.

Some larger batteries put off 1.5 to 2 Amps (or more), which would cause this issue.

Also, some chargers (such as rapid-charge cell phone wall chargers) put off more than 1 Amp of current.

Check that your external battery or power supply is providing no more than 1 Amp of current. If you have verified your power source is providing no more than 1 Amp of current, there may be an issue with the board. Please contact us for support options.

NOTE: If your battery or charger says it is proving only 1 Amp of current and this still happens, there is a chance there are fluctuations in the current that could cause the automatic shutdown.


If you you are getting lot of feedback, especially at higher volumes, it's typically due to a very hot signal, placement of your speaker relative to the microphone, or "echoing" with your microphone inside your costume.

If you have a line-out port, try using the line-out port of your TK-Talkie with the line-in port of the speaker. This is a line-level signal, which allows the amplifier to do all the heavy-lifing and can result in much higher volumes without feedback. You can also use the line-out port of the TK-Talkie with the standing microphone input on your speaker if it does not have a line-in port or you are using it for something else.

Hot Signals: If you are using the speaker/headphone port of the TK-Talkie, that is an amplified (hot) signal. If you plug this into the microphone port of your speaker (another amplified signal), you'll end up with a VERY hot signal that is prone to feedback, especially at higher volumes. This will require careful placement of your speaker so that is far enough away from your microphone so that the output of the speaker is not picked up by the microphone.

Speaker Placement: With any microphone/speaker setup, the closeness and relative position of the microphone to the speaker is very important. If the microphone is near the speaker (especially in front of it!) it can pickup the output from the speaker and cause feedback. Ideally your speaker is a good distance from the microphone and positioned so that it is in front of it so that when you talk the microphone is not picking up output from the speaker.

"Echoing": If you wear your microphone in a helmet (such as a TK helmet), whenever you speak, the sound bounces off of the hard surfaces and can cause feedback. It is a good practice to use the foam cover that comes with most microphones, or place a piece of foam in your helmet behind the microphone (or both!) to stop it from picking up echos from inside your helmet.

Hovi-Tip Speakers

If you are using the Hovi-Tip speaker setup with your helmet, you may need to use some sound insulation (such as foam) in your helmet between he microphone and speaker tips to prevent feedback from both echoing and the microphone picking up output from the speaker tips. Also, they are typically not shielded which can contribute to the feedback.

Can't Connect Via Mobile App

There could be several causes why the mobile app will not connect to your TK-Talkie: