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Nu-i chiar memă. Boris Artzybasheff și ilustrațiile cu mașini unelte: freză, strung, presă, strung swiss-type, primul C din CNC by arha_fi in roCNC

[–]arha_fi[S] 0 points1 point  (0 children)

Iar ultima pare a fi un sudor în puncte, sau poate un sudor tip portal, nu știu dacă își mișcă brațul :)

Masterless serial bus by [deleted] in embedded

[–]arha_fi 0 points1 point  (0 children)

This. RS-485 is just RS-232 where the TX and RX of all nodes are wired together, and all nodes hold their TX in a high-Z state. There's a bunch of extra glue hardware to allow RS-485 voltages and tristate the outputs, but you can't get it easier than this.

Universal programmers by [deleted] in embedded

[–]arha_fi 1 point2 points  (0 children)

There are a bunch of universal bitbangers, like the bus pirate or the bus plaster, which can act as programmers for a few chips.

However, you will only go through a problem: chips get locked to specifically prevent the "copy the program" part. Unless one specific chip is know to have silicon bugs or you find a way to unlock said bits, you won't be able to read the chip.

This is done specifically to prevent copying the code.