Gravity: 8-Digital LED Segment Display Module (Green)

Item number 57008 Brand DFRobot Model DFR0646-G Share
Gravity: 8-Digital LED Segment Display Module (Green)



Description

This Gravity: 8-Digital LED Segment Display Module with green segments is a great way to show counters, time or very big, numbers.

Features

  • Display Mode: 8 segment×8 digit
  • Support 16-level brightness adjustment
  • I2C communication

Specifications

  • Operating Voltage: DC 5V
  • Operating Current: <130mA
  • Operating Temperature: -40 ºC ~ +85 ºC
  • Storage Temperature: -55 ºC ~ +125 ºC
  • Digital Tube Size: 10.1 x 1.9 cm/3.970.75”
  • PCB Size: 11.7 x 2.2 cm/4.610.87”

Documents

Shipping list:

  • 8-Digital LED Segment Display Module (Green) x1
  • Gravity-4Pin I2C Connector x1

Properties

Brand information
Brand DFRobot
ModelDFR0646-G
DFRobot
€ 7,45€ 6,15 Excl. VAT (NL)
Expected delivery date: Tuesday 25 June. ... pieces in stock Almost sold out
Shipped from € 3,50 (NL) 30 days cooling-off Excellent service

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Customer questions

Customer Reviews

The Netherlands
The Gravity 8-digit 7-segment display is a nice and relatively cheap product for what it offers. Eight 7-segment displays controlled with I2C is something that can be used with both an Arduino and a Raspberry Pi , among many other similar platforms. It does require patience and understanding to work with the display, because if you want more than displaying a simple Double variable (such as the time, the date, or - in my case - high and low tide data) there is some work to do. The library associated with the display looks a bit sloppy and the developer's email address bounces. To control the display some tricks are needed because LED.print() cannot simply handle variables. Therefore, LED.print("A","B","C","D","E","F","G","H") works, but LED.print("ABCDEFGH") does not and the following also doesn't work: char L1,L2,L2,L4 ; L1="A";L2="B";L3="C";L4="D"; LED.print(L1,L2,L3,L4); What does work is: LED.print(&L1,&L2,&L3,&L4); So: put what you want to show in separate Char variables and refer to them with a &. The library expects a reference to the address of the variable, not the variable itself. With that limitation(s), it is a nice display that is also easy to mount and of which you can attach several to one I2C bus by changing the I2C address with a drop of solder.
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