The Danger Shield is an add-on for the [Arduino] micro controller board. It contains a variety of fun and useful electronic circuits that you can use to do fun and useful things. It is a fully self-contained shield. You plug it into your Arduino, and you can immediately start using it. No extra things to hook up, no external components. Just a really rad board ready to rock.
Some of the features of the board are:
Great kit. I'd give it 4.5 stars if I could.
Only 1 issue, with the temperature sensor- if you look at the nycresistor site (http://wiki.nycresistor.com/wi... it tel
Here is my TempF(Rthermister) curve fit for the SEN118A2B connected as a pull down in a resistor divider with a 10000 ohm fixed resistor pull up. This fit is significantly better at 0C and is still as good at 20C. The error at 0C is now less than .5C
I did a little more characterization of 5 of these sensors and found that their resistance at a given temp varies by 7.4% from thermistor to thermistor. At 70F this corresponds to a Temperature variance of 1.8C, on the order of what I was correcting f
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