In Water Vel Sensor FFT SD Logging Test

Test Details

Date: -- to --
Location:
Hardware: BoSL Velocity 0.1.1 (OPA2830 modified)(5V)

Description: Logging of FFT output of velocity sensor to determine the best way to extract velocity information and determine the effect of different speed particles.

Data:
1. CSV file uploaded to: http://www.bosl.com.au/IoT/testing/a.php, SITE ID: --------,
2. CSV file retrieved from SD card
3. CSV file retrieved from hach velocity sensor

Hardware

A BoSL Velocity sensor is to be installed next to a hach probe. The BoSL sensor is to be connected to an Arduino Uno with SIM5320 shield and SD card reader. Wiring is as follows.

BoSL Velocity	Arduino Uno
GREEN	5V
HALF GREEN	GND
ORANGE	D7
BLUE	A1
BROWN	A2

SD Card Shield	Arduino Uno
3V3	3V3
GND	GND
CS	D6
MISO	D13
SCK	D12
MOSI	D11

The SD card should be format as FAT16 and empty before inserted. Only remove the SD card when the blue "W" LED is flashing on the SIM5320, else corruption of data may occur.

Code

Code to be uploaded to Arduino Uno: File:SIM5320SD.ino

Velocity sensor: File:Velocity Code.zip
The board selected in the Arduino IDE should be: Arduino Pro/Pro Mini 3V3 8 MHz

To upload code to the velocity sensor. The velocity sensor should be wired

BoSL Velocity	USB - TTL Converter
GREEN	5V
HALF GREEN	GND
ORANGE	RESET
BLUE	RX/TX
BROWN	TX/RX

Note: the RX/TX labeling is not always constant so both combinations may need to be tried.

Data Format

1. This is a CSV with sample line:
02/07/20 08:44:00 AM,10 ,,,,,,52 ,0 ,,,,
[DATE] , [LOG ID],,,,,,[VEL],[VEL SD],,,,
DATE -- datetime of logging
LOG ID -- number incremented each log. Used to synchronize with logs on SD card. Reset on power up.
VEL -- Calculated velocity.
VEL SD -- Calculated standard deviation of velocity FFT peak.