Power dissipation, especially in bar mode should be given
consideration. For example, with a 5V supply and all LEDs
programmed to 20mA the driver will dissipate over 600mW.
In this case a 7.5? resistor in series with the LED supply will
cut device heating in half. The negative end of the resistor
should be bypassed with a 2.2?F solid tantalum capacitor to
pin 2 of the LM3914.
With a 9v wall thingy, the chip has to get rid of another 4 volts at 200 mA ( 10 LEDs on ) another 800 mW,
So the chip is trying to get rid of 1.4 watts in heat ( max )
Rather use a 6 volt wall thingy, and possibly also the 7.5? ( or 6.8 ? more common ) feeeding the LEDs.
And of course the other component missing ( for this group ) is the Arduino 