Monday, June 15, 2009

Battery Meter continued

I realized that I neglected to include some details about the design that will make it much easier for those using the previous post as a reference.

The pinout for the LM3914N is seen here:


Pins 1, 18, 17, 16 ... 10 correspond to the first, second, ... tenth LED.

LM350 is a adjustable voltage regulator. It works very similarly to the LM3914N. The desired output voltage is obtained by manipulating 2 resistors in a voltage divider configuration.

Here is the design soldered onto a protoboard.

Sadly the back isn't as attractive.
Hope this clears things up.

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