Adafruit 4-digit 7-Segment Display with I2C Backpack - Yellow

Price match guranteePrice match guarantee

We can price match this item if found elsewhere. Call us on:

0333 400 9500

Quoting product code: N71DQ


About this product


  • Requires a 5V supply
  • Constant current drivers for ultra-bright, consistent colour
  • 1/16 step display dimming

Product overview

• Requires a 5V supply• Constant current drivers for ultra-bright, consistent colour• 1/16 step display dimming• I2C interface• Backpack comes with address-selection jumpers so you can connect up to four mini 8x8's or eight 7-segments
• Arduino library available here
• Support page available here

What does a seven-segment device do?
This seven-segment display combines a four-digit display with a backpack using a KT16K33 chip. This allows for the four-digit display to be easily used and communicated with using only four connections, rather than 14. This display utilises high quality yellow LEDs.

What can I do with the seven-segment display with I2C backpack?
This backpack is perfect for any timer or clock project, enabling you to host a 24 hour clock or even count down using seconds. You could get this to count up or down when an event is triggered such as someone entering a room (other components required).

What is this seven-segment display with I2C backpack compatible with?
This seven-segment device uses I2C to communicate with an Arduino or other microcontroller. Most Arduino boards are able to use I2C connectivity but you may need to check your board’s layout to determine the clock and data pins. The I2C interface allows the connection of multiple devices on the same communication lines which allows you to have up to eight of these backpacks. This is done by moving address-selection jumpers.

What library do I need for my Arduino?
In order to program your Arduino board to control this backpacked seven-segment display you will need Adafruit’s LED backpack library which is available here.


Input Voltage 3 - 5 V DC
Connection Solder / Breadboard
Communication I2C
# of 7-Segments 4
LED Colour Yellow
Assembly Required Yes
Mounting Holes M2
Dimensions (W x D x H) 27 mm x 50 mm x 18 mm

Will this work with a Raspberry Pi.

Asked by: Terry
Unfortunately we are unable to guarantee full compatibility for this item in your intended application.
Answered by: Dominic
Date published: 2016-05-10
  • y_2018, m_1, d_19, h_10CST
  • bvseo_bulk, prod_bvqa, vn_bulk_2.0.6
  • cp_1, bvpage1
  • co_hasquestionsanswers, tq_1
  • loc_en_GB, sid_N71DQ, prod, sort_[SortEntry(order=LAST_APPROVED_ANSWER_SUBMISSION_TIME, direction=DESCENDING)]
  • clientName_maplin-en_gb