OpenEnergyMonitor

Just changed the amount of spaces from 7 to 4 in Datalogger before program could work correctly.

could you estimate wrining data transfer speed?

so if i can understand correctly, than you should use the same arduino used in the measurement board with the same supply. however the two codes have to be programmed to work together.
THanks a lot

hello,
how fast are you able to write to the usb? I want to use it in another project with quite big data transfer.
have you experienced the problem with the buffer loosing data cause of the bridge hack in cts and rts lines to control flow ??
do you know how big this buffer is?

thanks a lot !!

Trystan,

I am a little confused on how to wire the Vinculum VDIP1 to the Ardruino and energy monitor. Isn't the energy monitor already using the 5v in the Ardruino? Are you using two Arduinos?

Thanks,

Paul.

hello, thanks a lot for this information!!

I have build your power monitor 3.0, would it be possible for you to upload the sketch of power monitoring with USB storage all the code working together?

I have my arduino connected with the ethernet shield to internet to upload values to mysql database each 10 seconds, but sometimes it crashes and it goes offline, i loose all the data for that time. I would like to save that data to the usb so that later i can update the mysql database with the missing data.

thanks a lot !!!

Thanks alot for this post! This is by far the best logging code I've seen for the VDIP! (Well that I can understand:D)

Good work!

I am trying to log this sketch onto a usb pen drive:

/* Arduino sketch for Inspeed Vortex windspeed instrument
The anemometer.

=========================================================
ANEMOMETER
=========================================================
This is connected to Arduino ground on one side, and pin 2 (for the
attachInterrupt(0, ...) on the other.
Pin 2 is pulled up, and the reed switch on the anemometer will send
that to ground once per revolution, which will trigger the interrupt.
We count the number of revolutions in 5 seconds, and divide by 5.
One Hz (rev/sec) = 2.5 mph.

*********************************************************************/

#define uint unsigned int
#define ulong unsigned long

#define PIN_ANEMOMETER 2 // Digital 2

// How often we want to calculate wind speed
#define MSECS_CALC_WIND_SPEED 5000

volatile int numRevsAnemometer = 0; // Incremented in the interrupt
ulong nextCalcSpeed; // When we next calc the wind speed
ulong time; // Millis() at each start of loop().

//=======================================================
// Initialize
//=======================================================
void setup() {
Serial.begin(9600);
pinMode(PIN_ANEMOMETER, INPUT);
digitalWrite(PIN_ANEMOMETER, HIGH);
attachInterrupt(0, countAnemometer, FALLING);
nextCalcSpeed = millis() + MSECS_CALC_WIND_SPEED;
}

//=======================================================
// Main loop.
//=======================================================
void loop() {
time = millis();

if (time >= nextCalcSpeed) {
calcWindSpeed();
nextCalcSpeed = time + MSECS_CALC_WIND_SPEED;
}
}

//=======================================================
// Interrupt handler for anemometer. Called each time the reed
// switch triggers (one revolution).
//=======================================================
void countAnemometer() {
numRevsAnemometer++;
}

//=======================================================
// Calculate the wind speed, and send to serial port.
// 1 rev/sec = 2.5 mph
//=======================================================
void calcWindSpeed() {
int x, iSpeed;
// This will produce mph * 10
// (didn't calc right when done as one statement)
long speed = 25000;//2.5 mph * 1000
speed *= numRevsAnemometer;
speed /= MSECS_CALC_WIND_SPEED;
iSpeed = speed; // Need this for formatting below

Serial.print("Wind speed: ");
x = iSpeed / 10;
Serial.print(x);
Serial.print('.');
x = iSpeed % 10;
Serial.print(x);
Serial.print(" mph");

numRevsAnemometer = 0; // Reset counter
}

But I cannot get it working, do you have any advice ?