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bildr » Finding your way with the HMC6352 + Arduino

http://bildr.org/2011/01/hmc6352

Finding your way with the HMC6352 Arduino. Tuesday, January 11. Ever look into getting yourself a digital compass. But stopped because of this or that? Or maybe you bought one of the HMC6352 modules. Because it said it was drop dead simple, but never got around to getting it to work. What ever the reason, I want to let you know, the HMC6352 is very simple, more so than an analog. One in many ways. But simple does not mean easy, it is after all an I2C. A in hex, A command is:. The Get Data command. The he...

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bildr » 2011 » July

http://bildr.org/2011/07

One Wire Digital Temperature. DS18B20 Arduino. Friday, July 8. I know… you are probably thinking “Another Thermometer! How many do you need to cover? 8221; – Well… All of them. But really, they all have something different to offer. For instance this guy, the DS18B20. Has a unique serial-number sent with it’s data, so if you needed to have 50 of these on one bus, you could and still know exactly where the reading came from. And… It’s digital. Bus it uses to transmit the date is just one wire. And didn&#8...

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bildr » Sensing Humidity With The HIH-4030 + Arduino

http://bildr.org/2012/11/hih4030-arduino

Sensing Humidity With The HIH-4030 Arduino. Sunday, November 25. Humidity is weird. Even though we experience it all the time, it’s not something we can normally guess with any accuracy. This is probably because when we talk about humidity, we are talking about relative humidity. Relative humidity is relative to temperature, so a change in temperature alone is enough to change the relative humidity. This makes guessing the humidity extremely hard. Suggested Thermometers (with article):. To properly cacul...

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bildr » 2012 » February

http://bildr.org/2012/02

Triple Axis Magnetometer HMC5883L Arduino. Monday, February 27. One of the first articles we did was on the hmc6352 digital compass. Well this is his older brother (or younger but smarter). I really don’t know what to say about the HMC5883L other than it is a three axis magnetometer, so it is capable of sensing in 3 directions. Something I found interesting and obvious once I thought about it, is that all compasses point to magnetic north. And not true north. You can look up your Magnetic declination here.

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bildr » Sensing Capacitive Touch – MPR121 + Arduino

http://bildr.org/2011/05/mpr121_arduino

Sensing Capacitive Touch – MPR121 Arduino. Tuesday, May 31. Every now and then you get sick of the typical push buttons and you want something cooler. And what is cooler than touch sensitive things? Remember that old lamp in your Grandma’s that changed brightness just by touching the base? Yeah, that’s right… We are talking THAT cool! The MPR121 capitative touch sensor. Gives you 12 of such inputs that we can use with our Arduino, and you can get it in several forms from SparkFun. Is a 2-wire serial.

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bildr » Are we getting close? Proximity Sensors + Arduino

http://bildr.org/2011/03/various-proximity-sensors-arduino

Are we getting close? Tuesday, March 8. All 3 sensors will be outputting an analog. That we will be reading with our Arduino. The typical Arduino has 6 “Analog In” pins. Located on them. These analog inputs act just like a voltage meter, sensing the voltage on that pin, and are actually 10 bit. Analog to digital converters. For more information on ADCs. This resolution limitation of the Arduino’s ADCs are a large part of the reason that analog. Sensors are often inferior to their digital. Output. Con...

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bildr » Sensing A Bend With A Flex Sensor + Arduino

http://bildr.org/2012/11/flex-sensor-arduino

Sensing A Bend With A Flex Sensor Arduino. Friday, November 23. We spend so much time talking about sensing things less mechanical, that is is easy to forget the accelerometer isnt the only part in town. The flex sensor is one of those parts often overlooked by the advanced user. But what if you need to check if something bent? Like a finger, or a doll arm. (A lot of toy prototypes seem to have this need). Hooking it up, and why. And divides the 5v between the flex sensor and the resistor. The analog rea...

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bildr » Sensing Humidity With The SHT15 + Arduino

http://bildr.org/2012/11/sht15-arduino

Sensing Humidity With The SHT15 Arduino. Tuesday, November 27. The SHT15 is a digital humidity sensor that outputs a fully calibrated humidity reading. And… because what we are measuring is actually relative humidity. And relative humidity being relative to temperature, the SHT15 has a builtin digital thermometer. This makes things much easier to work with than sensors without a thermometer onboard. You can pick one up from sparkFun here. BEFORE YOU SOLDER IT UP…. Note that this board can not be washed!

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http://bildr.org/page/2

Touch Sliders With A Softpot Arduino. Monday, November 26. You all know the potentiometer, you turn it, and you can read on your arduino where it was turned to. Well 3M makes a product called the softpot that is a linear touch potentiometer. So instead of turning a knob, you touch it. There are a million uses for these, and they come in a few sizes, shapes, and even offer high temperature versions. If you touch the softpot at the top and the bottom at the same time, it will get really hot, really quick, ...

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bildr » 2011 » May

http://bildr.org/2011/05

Sensing Capacitive Touch – MPR121 Arduino. Tuesday, May 31. Every now and then you get sick of the typical push buttons and you want something cooler. And what is cooler than touch sensitive things? Remember that old lamp in your Grandma’s that changed brightness just by touching the base? Yeah, that’s right… We are talking THAT cool! The MPR121 capitative touch sensor. Gives you 12 of such inputs that we can use with our Arduino, and you can get it in several forms from SparkFun. Is a 2-wire serial.