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6 years, 11 months ago. This question has been closed. Reason: Spam/Innapropriate
why do I get crazy readings?
I have imported the library and code and modified it to suite a FRDM-KL25Z. I am printing results on TeraTerm. I have two problems. 1.)on reseting th device manually, my readings may be as extreme as 280+C and -500+% rel. hum. Sometimes they correct to more a acceptable readings but not always. 2.) Once the devices have settled on a reasonable read out (ussually 3 to 4 iterations of the while loop) they remain unchanged regardless of the changes in the environment(even after as long as 10 mins)
Is the sensor faulty???
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6 Answers
5 years, 12 months ago.
So it turns out I was using the wrong pins. I was using marked as the I2C1 pins but are also simultaneously PWM pins (pins PTE29 and PTE30). It seems because they are also PWM pins it wasn't always working properly? Also, from the pin-out, there are two other sets referred to as the I2C1 pins.
Switching to the I2C0 pins, readings stayed reasonable.
6 years, 2 months ago.
I am reading about FRDM-KL25Z before 2 3 days but I did not get any clue how it works what functions FRDM-KL25Z have. Anyone who have good knowledge about this I have read assignment writing on this topic but did not get any help from them I wanted to more about that.
6 years ago.
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6 years, 11 months ago.
Do you have placed pull-up resistors on SCL and SDA lines?
It is part of an assembly with a 10K Ohm resistor on the data line. https://learn.sparkfun.com/tutorials/sht15-humidity-and-temperature-sensor-hookup-guide?_ga=2.82199637.2120182754.1512337709-886845932.1508196254 No other resistors included.
posted by 03 Dec 2017
6 years, 11 months ago.
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6 years ago.
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posted by 13 Dec 2018
Solved. Using wrong input pins! Sorry! Thanks for all suggestion. Illuminating regardless
posted by Samuel Spinn 07 Feb 2018