DIY a Bluetooth control big LED matrix clock

I have made a 24x6 LED matrix and modified the project by adding a Bluetooth connection, so you can enter text content wirelessly via smartphone. By adding only a real-time clock module, we can convert the device into a nice large alarm so that can be switched between the clock or the mobile text matrix according to the uploaded code. I have obtained the modified ideas and code from the last clock context, and I also come from instructor Cermakamara's instructables, which has been a second prize. The LED matrix driver uses three shift registers 74HC595 to multiply the output and saves a large number of Arduino pins. Each shift register has 8 outputs, you only need to 3 Arduino pins that control almost a limited number of shift registers. We also use the 4017 decimal counter to scan, and you can use it up to 10 lines because you only have 10 outputs, and only 2 pins can be controlled.

Our other product:

Professional lightning protection system for Tower	Professional FM Radio Station Equipment Package	FMUSER FU-1000C 1000W FM Transmitter With USB Audio Input Interface
FMUSER 200W FM Radio Broadcasting Package	Hotel IPTV Solution	FMUSER FSN-1000T V5.0 1KW FM Radio Broadcast Transmitter