[Mini] measuring temperature off existing senders for additional displays
brett at nicho.id.au
Mon Mar 20 22:28:43 MDT 2017
Why bother measuring the senders or circuit? You should be able to find
out what the resistance is from the senders or gauge part numbers.
Typically they will be something like 0-180 ohms.
On Tue, Mar 21, 2017 at 2:57 AM, Dr John C Bullas <john.bullas at gmail.com>
> The electronic dash project continues
> I have senders in place for water temperature and oil temperature, both are
> connected to analogue gauges. I want to connect to the same senders to give
> inputs to the extra temperature digital displays
> As I understand it, the resistance of the senders vary with temperature and
> this increases the voltage flowing through the gauge and thereby change the
> defection of the gauge.
> How can I connect into these circuits to extract the same voltage vs.
> temperature relationship without changing the resistance of the circuit?
> I would be using an Arduino to take any input via whatever interface would
> be needed
> On Linked In: http://uk.linkedin.com/in/drjohnbullas
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Brett Nicholson (bnicho)
Myrniong, Victoria, Australia.
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