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Help, does anyone know what's the problem here? Green light blinks four times at start then only get a solid red after, preloaded with noobs in sd card : r/RASPBERRY_PI_PROJECTS
![LED Matrix Designed for Raspberry Pi Supports any Revision of Raspberry Pi|Demo Board Accessories| - AliExpress LED Matrix Designed for Raspberry Pi Supports any Revision of Raspberry Pi|Demo Board Accessories| - AliExpress](https://ae01.alicdn.com/kf/HTB1xgptaPfguuRjy1zeq6z0KFXao.jpg)
LED Matrix Designed for Raspberry Pi Supports any Revision of Raspberry Pi|Demo Board Accessories| - AliExpress
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