Adafruit Yellow 7-segment clock display - 0.56" Digit Height

Key Features

• 4-digit seven-segment display
• Good for time-based projects
• Display only

Design a clock, timer or counter into your next project using our pretty 4-digit seven-segment display. These bright crisp displays are good for adding numeric output. Besides the four 7-segments, there are decimal points on each digit and an extra wire for colon-dots in the center.

These are 14mcd bright. You can drive these with less current to get the same brightness to save power, or crank them up to 20mA and have them at their  brightest.

These displays are multiplexed, common-cathode. What that means it that you can use a 74HC595 or just 8 microcontroller pins if you can spare them to control the 8 anodes (7-seg + decimal) at about ~15mA each, and then connect NPN transistors or a TPIC6B595 to the cathodes to sink the 8*15mA = ~120mA maximum per digit.

Item Specifics
Size: 0.76" x 1.9" ( 19.3 mm x 50.3 mm)
Weight: 8.3 g
This version is just the raw display, and requires a lot more work to get running!