TTL to RS232 Adapter Simple Design

During additional time I fabricated quick architecture of TTL to RS232 adapter, that works with my AVR development board. This adapter helps to affix TTL (Transistor-Transistor Logic) akin signals to RS232 interface. TTL ancillary is 9-pin changeable adapter and RS232 afford is macho connector.

Unit is powered from ambition lath application ability pins.

The RS232 TTL adapter circuit:


Step by step design :




AVR_Uart_test :

Compile this affairs with WinAVR ad bake to chip.

Then download Bray’s terminal or added terminal software accessible it and baddest appropriate baud amount and added settings like adequation $.25 and so on. Start terminal and displace the AVR microcontroller:

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