02 Sensors

[Frederic Breitwieser]

> me what the 'bar' (as marked on the pcb) is for ?
> This bar is a break in the circuit on the 12v feed side of the last

Th eLM3914 has the ability to display in "bar mode" and "dot mode".  Dot mode
means only one LED is lit at a time, and moves up and down the bargraph
depending on the input.  Bar mode is more like a VU meter on a stereo - where
the higher the signal, the more "bars" or LEDs light up.

Since I don't have the schematic of your kit this is an educated guess, but
this would be my expectations based on the LM3914