User Manual: http://osoyoo.com/2017/01/03/arduino-16x16-matrix/
Arduino IDE download link:
https://www.arduino.cc/en/Main/OldSoftwareReleases#previous
Note: If your pc can't recognize the board, pls update the driver in Arduino IDE folder for your PC.

Uno R3 Board for Arduino:
Digital I/O Digital inputs/outputs: 0~13
Analog I/O Analog input/output: 0~5
Support ISP download function.
The input voltage: when connected to the computer USB without external power supply,external power supply 7v to 12v dc input voltage.
Output voltage: 3.3 V and 5 V dc voltage output dc voltage output.

16*16 LED Lattice Screen:
This is a 16*16 LED lattice screen, it can dispalys of the entire line shift up, shift left, shift right and so on.

The circuit board is a double-sided PCB board.
This module consists of 4 matrix LED display, column control and row control.
Column control consists of two SIPO chip 74HC595, row control consists of two decoding chip.
There's 8 control port, user can use jumper or other cable to the Single Chip Microcomputer or Arduino to control the LED.

Package Include:
1x UNO R3 Board for Arduino
1x 16*16 LED Screen
1x 20-Pin Jumper Wires(15 cm, Male to Female)
1x 2-pin Female to Female Cable
1x 8-pin Female to Female Cable
1x Pin Header
1x Bag Jumper Cap

• 16*16 Led can be infinite cascade controlled, DC: 5V, Compatible with 12864 interface.
• 16*16 Led each row has transistor drive and 4-16 decoder consists of two 74HC138, Each column has two 74HC595 cascade drive.
• When the row output high level, column output low level, the LED of the intersection light up.
• Uno R3 Board for Arduino has open circuit diagram of the original design, the development of software interface for free download. Can also be in accordance with the requirements and their modified, download the program is simple and convenient.
• Uno R3 Board can simply use sensors, all kinds of electronic components connection (such as: LED lights, buzzer, buttons, photoresistance, etc.), make all sorts of interesting work. Microprocessor controller, using high-speed development interface and the environment are very simple and easy to understand, very suitable for beginners to learn. Support ISP download function.

16*16 Led can be infinite cascade controlled, DC: 5V, Compatible with 12864 interface.