Stream data using Photon at each 10milisecond and upload to cloud

[rickkas7]

In this project, I was able to stream 200 12-bit XYZ samples per second from an ADXL362 accelerometer attached to a Photon with no difficulties. Like ScruffR said, you have to be careful with the accelerometer and driver. I wrote a custom SPI DMA driver that uses the ADXL362 queuing feature so it puts almost no load on the Photon and the samples are precisely timed, regardless of what the Photon is doing.

Gathering continuous data at 200 Hz

This got me thinking about how fast can you reasonably send sensor data off the Photon. To make a somewhat plausible proof-of-concept I connected an ADXL362 accelerometer to a Photon. It’s the sensor in the [Electron Sensor Kit] (https://docs.particle.io/datasheets/particle-shields/#electron-sensor-kit), but it’s just a basic SPI 12-bit X, Y, Z accelerometer. [image] I set it up to acquire 200 samples per second to a local server. It worked! The accelerometer is programmed to gather the samp…