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smartnathan
New Member

Nigeria
1 Posts
Posted - Aug 06 2011 :  01:09:02 AM  Show Profile  Send smartnathan a Yahoo! Message  Reply with Quote
I tried building the LED thermometer but its not functioning. Please, can the LM35DZ be used. Also is the LM3914 a programmable ic.
Nathaniel

audioguru
Nobel Prize Winner

Canada
4218 Posts
Posted - Aug 06 2011 :  11:11:45 AM  Show Profile  Reply with Quote
An LM3914 has a datasheet that shows how to use it. It has an adjustable voltage reference that has its voltage set with 2 resistors and one of those resistors sets the amount of regulated current in the LEDs.
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aravindj36
Apprentice

India
57 Posts
Posted - Nov 18 2011 :  8:06:00 PM  Show Profile  Visit aravindj36's Homepage  Reply with Quote
I had built one of those some time ago.Here is an instructable on hoe to make it.And by the way would could attach the circuit so that we could help you to trace out any problem.

And the LM3914 is not PROGRAMMABLE.
Help me my amplifier is on fire and my speaker is inside a beaker
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