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Messages - Grimstone

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General Discussion / Re: Ammo counter
« on: May 13, 2014, 03:53:25 PM »
Have not played with the LCD board, but it does seem to call for the same pins based on first glance of the docs. You might be able to pull it off though instead using a matrix shield which uses IO pins, instead of the analog. These two boards should be compatible. It would require a bit more programming though. It is a really cool concept and love to work on it.

TinyDuino Processors & TinyShields / Re: Compass Shield Quandary
« on: May 13, 2014, 03:39:26 PM »
Buggy board or...?

New Product Ideas / Re: Rotary input knob for Tiny Shield LED's
« on: April 28, 2014, 03:07:33 PM »

Awesome to here about the multi colored LED boards. I suggested earlier and have need of them for several projects.

TinyDuino Processors & TinyShields / Compass Shield Quandary
« on: April 16, 2014, 09:28:05 AM »
What is the expected output from the compass shield? I have connected the shield to the TinyDuino and ran the example sketch. Sure enough I am getting x, y, and z outputs on the serial monitor. Though now, it gets interesting...

1) If you rotate the instrument in place, the x, y, z numbers do change which is good. However, the values are not relative to each other. For example, the sum of their squares are not equal whether it is at 0 or 90 degrees. So is the sensor not calibrated in respect to each axis?

2) Using an LED shield for output to the compass, I get different values dependent on whether or not I am plugged into the usb shield with the serial monitor going or separate from the shield. Definitely makes debugging interesting.

3)Also noticed that on a few occasions, a small movement of the sensor causes the x to read -4096 which is worrisome. It does not seem related to actual magnetic field strength or orientation. This makes me think, I may have a faulty chip or it is not mounted correctly.


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