K8055 Analogue Input- how to extend the voltage range?

Kits PC Related Projects
1

Repost:
Can anyone post more information on the best way to approach temperature logging on the 8055 board?
I am running a LM335 sensor between Analogue Input two and ground, taking a live feed from the pin on SK2. This works but produces a signal range from
2.73V at 0DegC to
3.73V at 100 degrees C.

This only gives a range of about 50 points on the analogue input so lacks much accuracy.
Two questions please:

1/ Is there a way of extending the voltage range to allow greater accuracy? I would like a range of 100 points.
2/ Is there a better temp. sensor which gives a more differentiated voltage output? What have other people used, and do they all need “external” power?
Thanks

2

Please check temp sensor K8067, it has been designed for use with the K8055…

3

This is a Solar Heat controller and data logger project. I have two temp sensors and I am comparing the relative temperatures.
I had seen this K8067 kit but it doesn’t offer the temperature range I need, i.e. 0-100C. Also, the accuracy of 2 degrees isn’t sufficient for this project and I already have that from the LM335 solution.
If I could get the card to recognise 100 units between the voltage range I would be very happy. I have used the multiplier resistors on R8 and R9 but this doesn’t increase the range enough.
Any suggestions?