![]() To communicate through the m5stack serial port are used the digital I/o ports R0, R2 (RX) and T0, T2 (TX) (Fig. The voltage difference between RS-232 and TTL unlike RS-232, TTL uses a voltage close to 0 V to transmit "0" and 3.3 V or 5V to transmit "1" to transmit the operating voltage of the integrated circuit (Fig. RS-232 uses a voltage between -3 and -25 V to transmit "0" and +3 To +25 V to transmit "1". ![]() Ordinary personal computers are equipped with RS-232, and microcontrollers and M5STACK including uses TTL. ![]() The port is called "serial" because the information is transmitted one bit at a time, bit by bit. Serial port is the slang name of the RS-232 interface, which was massively equipped with personal computers, special-purpose equipment, including printers. ![]() You can learn more about the rules here: What kind of game to create? Let's make a popular card game "Fool", the purpose of which is to get rid of all the cards. Hi! Today we will create a network card game for two players. ![]()
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