arduimometer

Arduimometer pt. 4

Since my last update, I’ve created a breadboard version of the arduimometer without the Arduino. I’ve also been writing an instructable which will take you step-by-step on creating the arduimometer, which I hope will be finished in time to submit to sparkfuns microcontroller contest on instructables.

Everything seems be working nicely, the only issue their may be would be a power issues.

Right now I have everything running off of a 9volt battery and in testing, I’m finding that that might not be enough juice to run the arduimometer for a long period of time. Once I get the actual anemometer finished and set it up for a prolonged test I’ll get a better idea about the 9V battery and if it is capable of running for a long period of time.

Arduimometer pt. 2

Heres the Arduimometer breadboard layout done in fritzing. 

Since fritzing doesn’t have a Hall effect sensor in their parts list, I just used a three pin mystery part to represent one. 



The Hall Effect Sensor has a 10k Ohm pull up resistor connecting it to 5V.

When the Sketch is run, the LCD screen displays

Current:    mph

Average:   mph

When I wave a magnet in front of the sensor, it calculates the time between pulses then calculates the speed. Then, using the exponential moving average formula, it calculates the average speed since the program was started. 

Resetting the arduino will clear the data and start from zero.

Hopefully I’ll be getting a camera soon, either a borrowed one or I’ll be purchasing one, and I’ll take photos of the actual setup.