Drone Buzzers with Built-in Battery Shoot Out

Buzzers with built-in battery can help locate your crashed RC model even after the main battery is ejected or dead. We will compare a few popular options to find out which is the best for you.

The Loudest Buzzer!

Here is a basic spec comparison of the buzzers in this post.

Price Size Weight* Volume** Battery
Standard Buzzer $0.7 12x12x9.4 1.5g 83dB n/a
HellGate Buzzer $30 16x11x10 2.1g 82dB 40mah
VIFLY Finder $15 23x16x13 4.9g 96dB 80mah ***
JHE42B Finder $7.8 23x17x17 7.4g
FullSpeed Lucky Box $11.7 16x14x11 2.3g
Aurora AR Tracker $10 18x17x15 4.3g 100mah ***
* Weight is measured without wires to the FC
** Volume is measured with a sound level meter, at 15cm from the buzzer
*** Battery capacity for VIFLY is an estimation

See this article for other standard active buzzer options. Buzzer volume is measured in dBA (decibel), here is a chart to give you an idea how noisy each dB level is with examples.


HellGate FPV Buzzer

Slogan: NO QUAD WILL BE LEFT BEHIND

Where to buy

Accessories including:

  • 3x 10cm silicone wire (black, red, white)
  • 2x spare heat shrink
  • Sticky double sided tape
  • Sticker

I am surprised how tiny the HellGate buzzer is, it’s only slightly bigger than standard buzzer.

By connecting it to your FC, it acts as a normal buzzer (can be triggered with your TX). When the LiPo is connected, it charges the built-in battery so it’s basically maintenance-free. There are three wires, GND, Buzzer+ (or 5V) and Buzzer-

It doesn’t have any button, to stop the beeping you just need to power cycle your quad (plug in and unplug battery once).

Despite having a tiny battery (40mAh), HellGate claims to be able to beep for up to 2 weeks! This is achieved by cleverly reducing the beeping frequency as the battery level decreases. Hopefully you would have found the model by then :)

Conclusion: An original idea/product, durable and easy to use, but it’s not as loud as other options. I really like the compact form factor, only if the price could come down a bit! I have way too many quads, and I don’t think I can afford putting one in each of them… The volume is nearly as high as a standard buzzer already, but louder is always better.

VIFLY Finder

Slogan: Never Lose Your Drone Again

Where to buy

Accessories include a manual, zip tie and cable.

Everything is bigger in the VIFLY Finder compared to the HellGate: the buzzer, the battery as well as the PCB. It also has a push button so you can deactivate the buzzer by either power-cycling your quad, or holding down the button. I wish it had more advanced functions, for example selecting different beeping patterns/modes.

The connection is the same as the HellGate, GND, Buzzer+ and Buzzer –

By connecting it to your FC, it acts as a standard buzzer, and when the LiPo is connected it charges the built-in battery.

The buzzer is noticeably louder than the Hellgate, it’s so loud it actually hurts my ear when testing it on the bench. The battery is twice as big as the HellGate’s, but I don’t know the exact capacity as there is no label on it. My guess is around 80mAh just based on the size.

Despite the bigger battery, run time is only up to 6 hours. This is mainly due to the beeping pattern as VIFLY sets it to beep continuously in the loudest volume when activated (main battery disconnected). VIFLY explained this is to maximize the chance of finding the crashed quad in the first few hours.

Conclusion: Cheaper and louder. Unfortunately it’s pretty bulky and doesn’t last as long as the Hellgate does. I wish they can introduce an optional, more durable mode that lasts longer, it would be useful for the long range pilots, where hiking to the crashed site could take hours…

A side by side size comparison between the HellGate and VIFLY Finder.

JHE42B Finder

Not yet tested, but seems to be the cheapest option so far. The downsides are the large form factor, and much heavier weight than the rest at 7.4g! It’s equipped with a high power LED and push button. You can get it from:

FullSpeed Lucky Box Beeper

I haven’t tested this beeper yet. It seems to be another tiny beeper, the dimension and weight is similar to the Hellgate. It has a button for disabling the buzzer, as well as selecting different beeping modes. It also has an LED built-in but there is no mention about it in the manual.

Aurora AR Tracker Mini

Another affordable option featuring a large battery of 100mAh, an onboard bright LED and a claimed 100dB buzzer.

Banggood: http://bit.ly/2Ou4LDv

DIY

Can’t afford any of these expensive buzzers? Or are you just looking for a challenge? Why not build one yourself?! :)

Here is a tutorial on how to build a DIY buzzer with built-in battery.

12 thoughts on “Drone Buzzers with Built-in Battery Shoot Out

  1. Cocofpv

    I bought 2 of the lucky box buzzers. Be aware that they are not compatible with KISS FC, you cant activate it from the radio., Apparently it is a known problem, which is rather annoying. It has the interesting feature to beep after 7minutes of inactivity with the battery still connected, in case of crash with the lipo still attached. But on the two I have, one doesnt work with this feature.
    + cheap
    + light buzzer
    + beeps even with the lipo still attached
    – not compatible with Kiss FC (no buzzer function usable from radio)
    – bad quality product

    Reply
  2. JR

    Wish I could use this buzzer on my glider. Want to switch the buzzer on in case glider is lost in a tree or in the woods. As I am not using a FC, does anyone know if I cab activiteiten the buzzer with a switch on the radio? I using a Taranis radio.

    Reply
  3. Ruben John

    After smashing the hellgate byzzer in a crash i replaced with the small one tbat came with my dys f4 fc. After smashing thst too (lol)…i got a 3.99 Matek lost model buzzer and desoldeted the buzzer off it and stuck it on hellgate….happy happy…oh and i soldeted5longer wires to place my buzzer further away from the battery and the fc.

    Reply
  4. John Daniels

    Every one I no who has bought the hellgate buzzer they have all died , I took my friends one apart and the battery still had full charge something had blown inside but could not see what or were it was even under the microscope so I imagine one of the components has failed not good on a expensive buzzer, I have bought 3 vifly buzzers all working well and happy with them , I have made a charging board for charging the vifly so always has full battery just incase I loose it .

    Reply
  5. Juan

    Hello, i want to use a JHE42B on a fpv aircraft.
    Can you help me to understand how does the buzzer- on a flight controller works?
    (Voltaje)

    Tks

    Reply
  6. Jonathan

    Just bought myself 3x Vifly because $30 for the hellgate is ridiculous for what it is.

    My conclusions
    1) I’d really prefer it if the Vifly did not have a plug and I could solder directly.
    2) Would be great if the switch was solder too, then you could mount the buzzer in an obscure location and put the switch where it’s reachable. Think I might desolder and try this anyway. Not sure if power cycling all the time is good for the electronic components?
    Anyway I’ve managed to fit it in an LX5 with GPS, Cap and SQ12, so not too bad!

    Reply
  7. Alex

    I totally agree with you Oscar! I have made a review on this in spanish a few days ago and conclusións are very similar: youtu.be/izbrnWUBqqk

    Reply

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