We all have a favourite toy and for some of us that may be your lovense, for others it might be one you have had for years but would love it if someone else could control it.
Enter the universal battery.
Wouldn't it be great if you had a rechargable 1.5v battery that you could put in the controller or body of your favourite toy and then the battery connects via Bluetooth to your lovense app and controls the voltage and hence the speed of your vibrator.
You would have to loose some battery capacity to store the voltage regulator, controller chip, Bluetooth aerial and recharging circuit but you could probably fit it in a 'C' cell foot print or at least a side by side 2x 'AA' footprint used on most old/cheep vibrators. Or even a custom battery pack to make use of the mini 3.5mm jack some vibrators use now