3 ms·
> What would your ideal pick of hardware components be? In general, cheap 3.3v based devices just use disposable 2x AA battery with a reasonably good LDO regul
by Joel_Mckay 2y ago
> What would your ideal pick of hardware components be?
In general, cheap 3.3v based devices just use disposable 2x AA battery with a reasonably good LDO regulator, as they do not burn a lot of power that 2000mAh can last a long time. For a Bluetooth device, I would just leave the USB features/port/cable off to save on the design cost, and the sanity of DIY folks going cross-eyed trying to get a 0.5mm contact-pitch plug soldered. lol
The IMU chips all have trade-offs, but I usually prefer an i2c chip with interrupt event pin (wake-from-sleep or sample-ready interrupt.) Also, many modern gyro chips have pre-filters built right into the chip itself, and can save a lot of cycles/DSP mcu side.
Not sure about the development state of the ESP32 Bluetooth library, but these chips are generally not known for their power efficiency or accurate a2d functions. If I recall, last time I chose a nordic semiconductor chip because of the power efficiency, and everything else was unavailable.
Best of luck =3