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Raspberry Pi 3 Cookbook for Python Programmers - Third Edition
book

Raspberry Pi 3 Cookbook for Python Programmers - Third Edition

by Steven Lawrence Fernandes, Tim Cox
April 2018
Beginner content levelBeginner
552 pages
13h 58m
English
Packt Publishing
Content preview from Raspberry Pi 3 Cookbook for Python Programmers - Third Edition

Using the GPIO built-in serial pins

Standard RS232 signals can range from -15V to +15V, so you must never directly connect any RS232 device to the GPIO serial pins. You must use an RS232 to TTL voltage-level converter (such as a MAX232 chip) or a device that uses TTL-level signals (such as another microcontroller or a TTL serial console cable):

A USB-to-TTL serial console cable (voltage level is 3V)

Raspberry Pi has TTL-level serial pins on the GPIO header that allow the connection of a TTL serial USB cable. The wires will connect to the Raspberry Pi GPIO pins and the USB will plug in to your computer and be detected like a standard RS232-to-USB ...

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Publisher Resources

ISBN: 9781788629874Supplemental Content