Bluetooth is a very low cost and flexible way to add wireless communication to your projects. However, it can also be a bit tricky to set up. In this post we show you how to set up a Raspberry Pi with a USB Bluetooth dongle so that it can communicate with an Arduino using a …
Talking to a Bluetooth Serial Module with a Raspberry Pi Continue Reading
While working on my Arduino based robot vehicle project the idea came to me that the Bluetooth module that I’m using as a remote control receiver for my robot would make a great addition to my Raspberry Pi. In this article I describe how to enable the Raspberry Pi’s serial port to talk to other …
A cheap Bluetooth serial port for your Raspberry Pi Continue Reading
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 …
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 …
Raspberry Pi – RS232 Serial Interface Options (Revisit) Continue Reading
Many of the GPIO pins on the Pi have other special uses. The most useful of these are the serial port pins #8 and #10, which are transmit and receive for an RS-232 serial port. By default this port will output diagnostic messages during boot and then provide a user login. The configuration is 8 …
erial port to the Raspberry PI and breaks out some of the PI’s pins for experimentation. The interface board was designed to be simple and used for initial experimentation. It can be built on a single-sided PCB using home-made PCB fabrication methods. KiCad source files are provided so that the design can be modified if …
Raspberry PI Serial Port and Breakout Board Continue Reading
A serial-to-parallel shift register (or SIPO: Serial In Parallel Out) lets you take a sequence of signals on one output, and split them up into several separate outputs. For example, if you don’t have enough GPIO pins on your Raspberry Pi, Arduino, or other computer/microcontroller, you can use a shift register to add more. In …
What is a serial-to-parallel shift register? Continue Reading
In this tutorial we will see how to use the serial port on Raspberry Pi. We will use the serial port available on Raspberry with a RS232/TTL 3-5,5V adapter and a USB-serial adapter. By default the Raspberry Pi’s serial port is configured to be used for console input/output. This can help to fix problems during …
Read and write from serial port with Raspberry Pi Continue Reading
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 …
Raspberry Pi Serial Communication: What, Why, and a Touch of How Continue Reading
Setup and Connections Connect the output of the Arduino TX pin to a voltage divider. The output of the voltage divider is then connected to the RPi GPIO pin # 10 (GPIO 15). The voltage divider drops Arduino TX voltage from 5V to 3.3V. In my case, I used 2 10K resistors connected in parallel …
Raspberry Pi and Arduino Serial Communication Continue Reading
