Hello, I have a TM1638 board that looks like this: It has a STC15W204S mcu on the board just above that blue switch.
It came preprogrammed: when I turn it on it shows "12345678" on the display and when a button is pressed it makes an annoying noise from the buzzer and changes the number on it to the number of the button pressed.
The board has RX, TX pins and the 3 other pins w/ connectors for external/onboard control of the TM1638.
How can I program the onboard mcu like an arduino? What software do I need? (I would not expect to be able to use arduino ide)