Hello, my Arduino controller board only has 4 wires, 5v/gnd/rx/tx
‘m not getting to do the programming because I can not do the reset of the card …
how do I reset the board? GRN usually connected to the negative ???
I don’t understand what you are asking. What are you trying to do with the Defusable Clock? Program it using an Arduino? If you want to program it, you need a USB to serial adapter or cable. See http://nootropicdesign.com/defusableclock/hack.html
If you want help from others, you really should ask your questions more clearly.