K8061 experimental board and VR1

Kits PC Related Projects
1

Hi,
just bought this kit and connected an K8067(premounted) temerature sensor on it. can read the temperature. Question:

1 .is it normal that VR1 gets hot when i just connect it to the pc? its not super hot but its almost difficult to hold my finger on it.
So what does this VR1 in big lines? is it used for the conversion AD/DA? or is it for power ?

CurrentTemperature = Math.Round((((101 * _input1) / 1024) - 23), 1);
Is this correct for c#?

Manu

2

VR1 should not get hot.
VR1 is the voltage regulator for the microcontroller IC6, DA converter IC7 and for the operational amplifiers IC10 and IC11.

It seems that there is too high current flowing through the VR1.
Please check that the DA converter IC7 is in right position.