Thank you, Lia. For me, the sound only appears after I have been riding the board to the point where the battery has been depleted to 4% charge or less. And even then, it doesn't appear every time that I drain the battery that much.

Hello NotSure! Can you elaborate? At low enough speeds, I'm not sure if redundancy applies since you have to cover both pads and uncovering either one causes the board to disengage. And when riding at speed, if you only have one sensor engaged (which can be done since only one sensor needs to be covered when riding at speed), AND if that sensor fails, the other sensor still isn't covered and won't save you from the board shutting down in that instant.

If you always use Quickstop to stop (https://www.youtube.com/watch?v=rV_NgTffUY8), is there any need to have two sensors in the front footpad? If not, is there a way to configure the front footpad so that, no matter how slow you are going, you only need to have pressure on one of the sensors to keep the motor engaged? I am asking because I often warm up at the start of my rides by riding tight heel-side and toe-side circles around a manhole cover. And so I have to make a concerted effort to keep my front foot flat on the footpad so that the board doesn't disengage while I am leaning to the inside of the turn (i.e. over the manhole cover). I also do sharp turns post-warmup. And I am in the habit of keeping my front foot flat on the footpad for all turns so that I don't have to think about whether my velocity (or lack thereof) warrants it. I am also in the habit of riding both regular and goofy in the same ride (trying to stay symmetric) which means that the foot that I am trying to keep flat on the board changes mid-ride every day that I ride. So you can see why I would prefer to have just one big sensor up front.

I uploaded the audio of the fan/hissing sound to YouTube: https://youtu.be/FGHLRx_C8lk

As I wrote on YouTube, the encoding process seems to have lowered the volume in the recording, so you may have to turn your speaker up to hear the sound.

Hello! I have on occasion unintentionally ridden the battery on my Pint down to 4% charge and even less. And a few of those times I have noticed when I go to shut the board off, that it sounds like a fan is running inside the board. The sound is almost hissing-like. I have an audio recording and can upload an mp3 if there is a way to do that here. Anyway, the fan/hissing sound seems to continue until I shut the board off. When I turn the board back on, even if it is just seconds later, the sound does not resume (thankfully). Does anyone know what is causing the sound?