Update 2/20- small qty is always kept in stock. Larger orders may take 2-3 weeks. Stock qty is set high to allow preorders I can no longer reliably source the chips, so only bare boards are available

Standard choices are Red and Green. Blue costs a bit extra. Bare boards are now available as an option

Breakout board kit for the LM391x family of bargraph drivers

The legendary LM391x drivers have been around for a long time and are often used in various meters, VU meters and other bargraph-like applications. Often that means breadboard and many wires connecting things. This kit is intended to make life easier for the makers.

Key features:

• Includes all parts pictured and a bare board (You can also select just the bare board in product options if desired)
• Supports all chips in the 391x family: LM3914, LM3915 and LM3916
• Supplied is LM3916 (http://www.ti.com/lit/ds/symlink/lm3916.pdf)
• Supports 20 pin DIP LED bargraph displays in Red/Green/Yellow/Orange/Blue and multicolor
• You can now select from Red, Green, Blue bargraph displays. Red or Green do not affect pricing, but Blue does.
• Display goes all the way to the edge of the board for easy stackability
• Potentiometer for full scale input adjustment from 1.25v to 2.8V
• Jumper for switching between bargraph and dot modes
• Can be powered from a 5V supply
• Very compact: 40x26mm. Mounting holes are 3.2mm, positioned 4mm from edges

Notes:

• A good tutorial on the LM391x family is over on http://tronixstuff.com/2013/09/14/tutorial-lm3914-dotbar-display-driver-ic
• Detailed writeup and assembly instructions are at http://kuzyatech.com/lm3916-led-bargraph-vu-meter
• The values of resistors supplied are a good starting point but may need to be tweaked for your exact application
• Some signals needed for daisychaining are brought out, but depending on configuration you may need to do some trace cutting/jumpering