TPIC6C596 Large Digit Driver Chainable SparkFun

The SparkFun Large Digit Driver can easily be attached to the back of the 7-segment display by soldering all 10 castellations pins at the bottom of the board as well as the two additional castellations at the top. Keep in mind that the Large Digit Driver requires both 12V for the LEDs and 5V for the on-board TPIC6C596 IC. Each driver is equipped with six input pins and six output pins, these make the driver capable of being chained together. The input/output pins are listed as GND (Ground), LAT (Latch), CLK (Clock), SER (Serial), 5V (Power for the driver IC), and 12V (Power for the 7-segment display).
Key Features

Designed to attach directly to the 6.5″ 7-Segment Display

IC Operating Voltage: 5V

Sinks up to 250mA per channel

Chainable to another Large Digit Driver

Castellated Mounting Holes

Resources

Schematic

Eagle Files

Hookup Guide

How to Solder Castellated Mounting Holes

Datasheet(TPIC6C596)

SparkFun Speed Trap Wishlist

GitHub(Design Files & Example Code)

Building a Safe Cracking Robot