4/7/2024 0 Comments Rs232 to usb wiring diagramA few months ago I took an interest in the ATMega328 and Arduino so I built a small project that used a breadboard style configuration, but on a perf-board. The slaves do not start a conversation, which is just fine when the slave is a serial EEPROM. An ATmega16U2 on the board channels this serial communication over USB and appears as a virtual com port to software on the computer. ATmega328p is interfaced with MAX485 as shown in the previous circuit diagram. I figured I could use it to The suffix “x” in DDRx, PORTx, and PINx must be replaced by the port actually being used to have DDRB, DDRC, and DDRD. Installation of a driver (FTDI) is ATmega328(P) based (32 KB Flash Memory, 1 KB EEPROM, & 2 KB Internal SRAM).
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