In this short video we will show how to use an Arduino development board as a USB to TTL Converter (also known as COM or RS-232) converter.

Arduino Mega Receives from the main serial port (#0), and serial port #1. Outputs TTLs based on contents of serial command. LEDs indicate when TTLs are activated. Two serial input strings. 'a' ...

MAX232 chip required for converting RS232 voltage to TTL. Also, check the tutorial how to use wire MAX232. The part about the software serial is out of date. NOTE: connect the PHH37 Rx/Tx wires to ...

Sometimes we want to send TTL and I2C signals over a longer distance. This article describes how these signals can be extended through RS232 lines.

Who'd Thunk It? Arduino and PLCs Hook Up Via RS232 and Modbus There is a thriving online developer community using RS232, Arduinos, and PLCs to build industrial and home automation systems on the ...

An ATMEGA328 acts as the brains of the operation, with a MAX232 attached for level conversion from TTL to RS232 voltage levels. Serial data are received on the hardware TX/RX lines.

This article is completely focused on Arduino UNO only, if you want to know about the other options you can check out our previous article on Different Types of Arduino Boards where we have compared ...