I'm guessing this is some problem with the ultrasonic frequency making its way to the wires carrying the DS18B20 signal,
Could it be the proximity of the motor driver to other wires, such as signal/power wires?
Please enter a valid email to subscribe
We need to confirm your email address.
To complete the subscription, please click the link in the
email we just sent you.
Thank you for subscribing!
via Egeo 16