In celebration of the 50th anniversary of Apollo 11's Moon Walk, we are offering $50 off our SparkFun Inventor's Kit for RedBot and the Arduino Engineering Kit while supplies last! Use promo code APOLLO11 at checkout until 11:59 p.m. MT to get yours today!

Member #356190

Member Since: August 28, 2012

Country: United States

  • I'm having trouble getting this to work with an Arduino. I have hooked it up to A4 and A5, and I have it on the 3.3V power supply with the reference pin tied to ground. When I use the Bildr code to try to test it, I'm only ever reading values of 0 from the device. that is, I will get a temperature reading of about 0.0625 degrees celcius no matter what. This is my first time using I2C, so I might have made some stupid mistake, or I could have a bad chip, who knows. Any help anyone can give would be awesome. Thanks!

  • I think you might not have a high enough resolution in your voltage measurement. I just ordered this sensor, so I haven't been able to test it myself, but strain gauges generally give very small voltage changes. You will need to hook up your Vout to an amplifier circuit to read anything in the volt range, and this is definitely the way you want to go if you are using something like an arduino. Your force is probably causing a mV level change on the red line that your multimeter cannot measure.

No public wish lists :(