One wire probe problem


#1

hi, but I explain why if arduino food with a 9v power supply everything ok, if you feed it at 12v or with USB power supply the probes continue to give continuous jolts of reading passing from the real temperature to -127 C, it happens with both arduino one with arduino 2


Arduino Uno + DS18B20 temp sensor
#2

it is not the issue with power supply. -127 is for bad connection. Use this to find the address https://www.hacktronics.com/Tutorials/arduino-1-wire-address-finder.html and then use this code to read data https://www.hacktronics.com/Tutorials/arduino-1-wire-tutorial.html


Sensors not working/triggers wont save
#4

no boys, maybe I did not explain myself. it’s a power problem … not changing anything, moving nothing by exchanging feeds gives me this problem. if I put the power supply 9v all perfect, if I put the wings from usb is a defect


#5


#6

were you able to get address of each sensor?


#7

yes,


#8

then add your address into this code https://www.hacktronics.com/Tutorials/arduino-1-wire-tutorial.html and upload. Dont add cayenne code.


#9

es, it works. I repeat … feeding … if I change power source everything ok … was to share with you the fact … but I think I’m the only one to suffer from the problem


#10

Thanks for pointing this out. i can now suggest user to change the power source if any one has same issue.