# How to remove the "beeps" of my motor (with ESC) **URL:** \ **Category:** Speed Controllers (ESCs)\ **Created:** [June 30, 2022, 8:44am UTC](https://discuss.bluerobotics.com/t/how-to-remove-the-beeps-of-my-motor-with-esc/12427 "2022-06-30T08:44:48Z")\ **Posts on this page:** 3\ **Page:** 1
**Author:** ![KOSMOSproject](https://sea1.discourse-cdn.com/flex019/user_avatar/discuss.bluerobotics.com/kosmosproject/32/9231_2.png) [@KOSMOSproject](https://discuss.bluerobotics.com/u/KOSMOSproject)\ **Post date:** [June 30, 2022, 8:44am UTC](https://discuss.bluerobotics.com/t/how-to-remove-the-beeps-of-my-motor-with-esc/12427/1 "2022-06-30T08:44:48Z")
Hi, we are working on the design of an underwater observation camera that should be silent, via a robotics project using a Raspberry pi. We are using a brushless motor model F2838 which **emits “beeps” when it does not receive any signal.** (In order to preserve our battery consumption, we are looking for a way to cut the signal to the motor when it should not be used) We are therefore looking for a way to **eliminate these regular “beeps”.** The problem comes from the ESC we are using. On the oscilloscope we could observe that it is the one that sends a signal to the motor. So we need your help to answer the following questions: **Is there a way to set up the ESC so that it no longer beeps?** (We have not been able to connect our ESCs to BLHeli) **Is there a particular type of ESC that will not beep?** **Can the beeper be removed directly from the engine?** **Can we control the beeping of the motor from our Raspberry pi?** Details: We have already tested the “Air20A” and “E series420lite” ESCs which emit the famous regular “beeps”. The “Pro-Tronik BF 20A” ESC does not beep but does not run the motor. Thank you kindly for your response… The KOSMOS project [https://wikifactory.com/@konkarlab/kosmos30](https://wikifactory.com/@konkarlab/kosmos30) ---
**Author:** ![adam](https://sea1.discourse-cdn.com/flex019/user_avatar/discuss.bluerobotics.com/adam/32/9438_2.png) [@adam](https://discuss.bluerobotics.com/u/adam)\ **Post date:** [June 30, 2022, 4:35pm UTC](https://discuss.bluerobotics.com/t/how-to-remove-the-beeps-of-my-motor-with-esc/12427/2 "2022-06-30T16:35:46Z")
Hi @KOSMOSproject, To clarify, there is no “beeper” inside the motor, the motor itself is being used as a speaker by the ESC to emit tones. Both speakers and motors use modulated electric currents to move other parts of them, there isn’t much a difference mechanically. The startup tones are intended as a critical diagnostic tool to check the connections between the motor and ESC. Each of the three initial tones indicated a connection for each phase, with the other two usually indicating “ready” and “armed” when initialized with a valid signal. It’s not a common use case to disable them altogether given the information they convey, so it may be tricky. The beeping is something purely controlled by the ESC firmware for the ESCs I am aware of, it is not possible to control without directly modifying the ESC firmware. Though BlHeli\_32 has some options for custom startup tones, I’m not sure if it’s possible to disable them entirely. There are two options I suggest: 1. Modifying the BlHeli source directly the remove the startup tones and compiling a custom firmware. There may be some developers on the project that could help you with this. 2. Using something other than a commodity “hobby grade” ESC. More commercial/industrial focused ESCs may not have the same startup tones. Off the top of my head, I believe VESC based ESC may not have startup tones enabled by default. These may be a fair bit more expensive. I hope this helps! -Adam ---
**Author:** ![wholm](https://sea1.discourse-cdn.com/flex019/user_avatar/discuss.bluerobotics.com/wholm/32/4469_2.png) [@wholm](https://discuss.bluerobotics.com/u/wholm)\ **Post date:** [July 1, 2022, 12:57am UTC](https://discuss.bluerobotics.com/t/how-to-remove-the-beeps-of-my-motor-with-esc/12427/3 "2022-07-01T00:57:29Z")
The BLHeli32 configurator has a setting for Startup Beep volume. I assume it goes to zero, though I’ve never actually verified this. Of course, you’ll need to get a BLHeli32 ESC to make this work. -W