kriswiner
commented
5 years ago 1) I will assume you have calibrated all three sensors, or at least the mag. Not sure what is happening. You will need to ask the vive people about their device.
2) Sounds like you are not using light sleep. The ESP32 uses a lot of power, but not more than ~100 mAH so maybe you need to turn off wifi and practice basic power management methods. if you want to use just BLE, try the nRF52, it uses a few mAH to run.
3) the problem with deep sleep if the ESP32 forgets its state and starts at the top of the sketch, but yes, this should save a lot pf power depending on your duty cycle. You may use the button on the ESP dev board as a wake up.
On Sun, Sep 9, 2018 at 6:27 PM afnan notifications@github.com wrote:
Hi, I am using your Ultimate sensor fusion board with your ESP32 board. I would be grateful if you can answer the following:
1.
Even after proper calibration including an accelerometer, if you rotate sensor at one angle (roll) more than 90, the pitch increases suddenly whereas it should remain zero or close. Why? if this is a sensor limitation or design limitation, how did HTC vive hand controllers implement it as they are using MPU6050? 2.
On using 750mA lipo with ESP32, sensor fusion board and sending data through BLE, I only get 20 minutes of usage time. I am trying to understand that how POLAR wrist watch get more time from a very small battery? it too is sending data through BLE. 3.
Do you think deep sleep function can help to get more juice out of this battery? if yes do you think I can use the button attached to GPIO zero on your board?
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afnan
Hi, I am using your Ultimate sensor fusion board with your ESP32 board. I would be grateful if you can answer the following:
Even after proper calibration including an accelerometer, if you rotate sensor at one angle (roll) more than 90, the pitch increases suddenly whereas it should remain zero or close. Why? if this is a sensor limitation or design limitation, how did HTC vive hand controllers implement it as they are using MPU6050?
On using 750mA lipo with ESP32, sensor fusion board and sending data through BLE, I only get 20 minutes of usage time. I am trying to understand that how POLAR wrist watch get more time from a very small battery? it too is sending data through BLE.
Do you think deep sleep function can help to get more juice out of this battery? if yes do you think I can use the button attached to GPIO zero on your board?