communication

Speathe

Speaking Through Breathing: An intelligent communication system for the paralyzed.   Things used in this project Hardware components Software apps and online services Python react-native Story Speathe: An innovative and evolving communication method for the paralyzed who are gone speechless after paralysis. Even if there are methods for the paralyzed Speathe lends a helping hand …

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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 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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Raspberry Pi & Arduino: a laser pointer communication and a LDR voltage sigmoid

Plugging the laser module on Arduino Isn’t easy to plug a module when you have no datasheet or some wiring schemes, the chances are that you’ll probably burn it if you provide a current greater than the supported. The module I have was bought on the DX.com and it came with 3 pins, “-” mark, …

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