Looking for a first project to try out on a Raspberry Pi, I though what better than a Spectrum Analyzer? (Sometimes this display is erroneously referred to as a graphic equalizer–that let’s you change the sound, not display it) I was able to get it doing 2048pt FFTs and decoding mp3s in real time, and […]
Raspberry Pi Spectrum Analyzer with RGB LED Strip and Python Read More »
some application, i.e. XBMC can show informations on a display by using LCDproc as driver. This post describes a way to connect a HD44780 display to a Raspberry PI by i2c bus. Let’s start with the physical layer. This is the overview schematic on how to connect the display to a Raspberry PI. Based on
Raspberry PI: Connecting a HD44780 Display over I2C Bus Read More »
The project is connected to GPIO 15 input pin 1 of my Raspberry Pi interface board. There is nothing special about this pin, its location is simply convenient with my layout.. Please be aware that this project will only work in the British Isles, because the transmitter is not very powerful. The antenna should be aligned with
An MSF Atomic Clock for the Raspberry Pi Read More »
433mhz RF transmitters and receivers are really cheap, so you might be tempted to add a RF receiver to your Raspberry PI. But there is one problem: the Raspberry PI may not be fast enough, or may be blocked totally while it tries to keep up with handling and filtering all the RF signals that
Use a bare Arduino as an RF signal processor for Raspberry PI Read More »
This article is a work in progress to create a power-controller for the Raspberry Pi based on a PIC microcontroller and MOSFET. The PIC implements an I2C slave to allow power control, and also to approximate the registers of a PCF8563 Real Time Clock (RTC) chip, to allow timed wake-up of the Pi. Power the
Raspberry Pi Power Controller Read More »
you can go directly to Section 9 also. make high quality brain wave interface as low cost and small size is my over 20 years of dream. To do so need mass production, need work with investor to realize that way. not just only my thinking many people ask me to have low cost brain
Open brain wave interface hardware Read More »
So you successfully confiured your RaspberryPi in a fully headless fashion, maybe with WiFi too, and you are very happy using it at home in your robotic projects… But when you go outside, at work or on any foreign network, once powered and connected to some ethernet cable you do always… get it lost on
Headless Raspberry PI WiFi setup (for mobiles) Read More »
This tutorial demonstrates how to attach a LED to the expansion connector on your Raspberry PI and to make it blink with a simple C++ program. First of all, in order to programmatically switch a LED on and off we need to connect it between a general-purpose input/output pin (GPIO) and the ground. Then we
Creating a “Blinking LED” project for Raspberry PI Read More »
Most ways to stream music to multiple sets of speakers cost more than it is worth. I don’t think I have to say much about it, you probably wanted to do this in the past but it just seemed stupid to spend that much money on a separate dedicated system. We are going to exploit
Airplay Multiroom radio with the Raspberry Pi, no additional hardware needed. Read More »
I finished designing, etching and silkscreening a new board last night and started populating it. It’s a slight redesign of a board I did before last year’s AVC. What’s it for? Not telling yet. 🙂 I can say this. It’s an Arduino clone that will speak serial on one set of pins via NewSoftSerial and
AVC: Serial to I2C Bridge Read More »
