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Good Day Sir. Thanks for the effort to do such an impressive with this bluetooth, led matrix and arduino. I have tried it until the last steps of your tutorial. It was amazing. But it cannot store the input that we have wrote with android apps. Therefore, each time the arduino is restart, the user need to re input all the input again and again. And if i input around 30 alphabetical with spaces (selamat datang ke aliran etika enterprise), it will have a problem. I hope you can look into this matter. Again, this is an impressive effort. Thanks Sir.
Arduino Nano and Visuino: Control Servos with Joystick