Arduino sending analog data to IOBridge

[scoopjones]

   I've been tinkering with a high-altitude wind gauge that I want to link to a web site and provide a chart of wind speed data via IOBridge. I have an Arduino doing the pulse counting and calculations for the wind gauge, and I want to send the MPH numbers over to the IOBridge to shoot it up to the web site. What would be the best way to do this? I tried an "analogWrite" to have the Arduino send a voltage value to the Analog In on the IOBridge channel, but the Arduino it turns out doesn't create a voltage, it sends a series of +5V pulses, much faster for higher values written to the port. That doesn't work for the IOBridge, unless I can count the number of pulses per second, every second. I suppose I could try an Ethernet board and bypass the IOBridge, but I'd like to keep the web site all in one system. I was hoping IOBridge would add a pulse frequency feature, not just a pulse counter, but I guess that didn't happen. Any ideas would be appreciated. Thanks!

Evan

[iobridge]

I ran this sketch on the Arduino to the IO-204.

http://www.arduino.cc/en/Reference/AnalogWrite

I replaced the LED with the Analog Pin on the IO-204. The IO-204 reads the analog value correctly. As I adjust the pot the analog value is updating form 0 to 1023.

I would make sure the grounds are connected from the IO-204 to the Arduino.

Let me know what you find out.

I will keep digging in the mean time.

[nick]

Get a serial smart board and connect it to the UART on the Arduino.  Use the serial web services API to upload your data. You could either use a GET command to send it to your own website, or the DATA_LOG command to put it into an Iobridge data log.

Nick

[scoopjones]

Thanks, I read the article on the Arduino site, and I think what I was doing wrong was assuming that analogWrite uses the analog pins, which it apparently does not. I'll try it that way and see if I can get a result. Thanks again.

[iobridge]

Yes, it definitely uses a a Digital PWM pin. 3,5,6,9,10, or 11 on the Arduino can all use analogWrite on a Digital I/O pin).

I think you will get it working now.