Vizier87
Active Member
Hi guys... I've looked around and found a way to get a low cost humidity sensor using carbon resistors with the coating removed. My question is that:
1. What is the suitable range of the resistance of the resistor that I should choose?
2. Should I use a wheatstone bridge or just a voltage divider to get the output voltage corresponding to different humidity levels? I'll be feeding the input into an ADC in a PIC.
Thanks.
1. What is the suitable range of the resistance of the resistor that I should choose?
2. Should I use a wheatstone bridge or just a voltage divider to get the output voltage corresponding to different humidity levels? I'll be feeding the input into an ADC in a PIC.
Thanks.