serial

Raspberry Pi – homemade level converter for serial communication rs232 3.3 volts to 5 volts TTL for AVR microcontroller

I found that the Raspberry Pi serial interface rs232, described in a older post by myself, was too bulky. Pi and AVR should be connected through a less amount of wires. So I’ve searched the best hints to solder a cheap and uncomplicated level converter, that can directly be connected between the GPIO of the …

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Raspberry Pi – RS232 Serial Interface Options (Revisit)

In the previous article Raspberry Pi – Installing a RS232 Serial Port we discussed how to install a RS232 port on the Raspberry Pi.  This is a follow up article to suggest a few alternative interface options as the XBit RS232 level-shifter board has been unavailable (sold out) for while now. There are two primary …

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Raspberry Pi Serial Communication: What, Why, and a Touch of How

I started exploring how to get a LCD display operational with a Raspberry Pi (RPi).  I checked out two hardware configurations: the bare bone LCD 16×2 display driven by the HD44780 chip set, which takes 6 wires to operate,  and another configuration that uses a Adafruit shield that requires only 2 wires.  It quickly became clear to me that I knew …

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