LED Display Module 7 Segment Daisy Chain TM1638 8 Digit Input

Description

8 Digit 7-Segment LED DIsplay Module
Item No. : KR07059

Description:

1. use TM1638 digital tube drive chip
2.only need three common IO can drive, don’t need MCU scanning, save MCU resources
3.with eight 8 period of digital tube (including the decimal point), 8 double color led and eight key input can be expanded into 3 x 8 buttons, digital tube and led can control alone
4. support 8 class brightness to adjust, digital tube and led using the same brightness
5.support cascade most of the same six module
6. with eight digital tube, eight double color led and eight key input can be expanded into 3 x 8 buttons, digital tube and led can control alone
7.size 10.0 x 5.1 (cm)

If you need a fast and easy way to add some user input and output to a project, these display modules are interesting and fun.

They contain eight 7-segment red LED digits, eight red/green LEDs and also eight buttons for user input. The units can also be daisy-chained, allowing up to five at once, and a short cable is included with each module, as well as some short spacers and bolts, as shown in the image.

Hardware Connection to anArduino or other MCU is quite simple. The pinouts are shown on the rear of the PCB, and match the fitting on the ribbon cable. If you look at the end of the cable as such.

The top-right hole is pin one, with the top-left being pin two, the bottom-right pin nine and bottom-left pin ten. Therefore the pinouts are:

Pin 1 : Vcc (5V)
Pin 2 : GND
Pin 3 : CLK
Pin 4 : DIO
Pin 5 : STB1
Pin 6 : STB2
Pin 7 : STB3
Pin 8 : STB4
Pin 9 : STB5
Pin 10 : not connected.

For Arduino use, pins 1~4 are the minimum necessary to use one module. Each additional module will require another digital pin connected to STB2, STB3, etc. More on this later. Please note that each module set to full brightness with every LED on consumes 127mA, so it would be wise to use external power with more than one module and other connections with Arduino boards.