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

Item number 57008 Brand DFRobot Model DFR0646-G  Share

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
Model	DFR0646-G

€ 7,45€ 6,15 Excl. VAT (NL)

Ordered before 23:59, shipped today. ... pieces in stock Almost sold out

Shipped from € 3,50 (NL) 30 days cooling-off Excellent service

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Customer Reviews

Bob Schat

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.

Placed on 30 January 2024

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Gravity: 8-Digital LED Segment Display Module (Green) ★★★★★Click a star to leave your review

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