Color coded weather forecasting with Raspberry Pi

pi_weather_forecasting

It is hard to display weather forecasting in compact form especially for longer periods. Text based display would look too cluttered. Color coding looks more promising. AughtNaughtZero have shared his instructable on building 32 hour weather forecasting device on Raspberry Pi. For displaying various weather parameters he used custom 6×16 RGB LED matrix. Raspberry Pi pulls weather data from Weather Underground API using Python script. The each of 6 rows of LED matrix is dedicated to different parameter: temperature, pressure, humidity, wind speed, chance of precipitation, and weather condition arrays. The each column of of each line is spread for 32 hours of data where each dot is color coded to represent the forecasting for two hour period. The python script uses couple libraries and code snippets to handle color … Continue reading

Using Raspberry Pi sftp server

pi_sftp_server

There are several ways of accessing Raspberry Pi files through network. One of preferred ways is to use Secure Copy (SCP). This is a file sending command allowing transferring files over SSH. This is secure way of sending files between Raspberry Pi boards or other Linux machines. In order to use with Windows you need special software like WinSCP. So as you can see it requires additional software to access files from windows. But if you are used to transfer files via FTP, then you have another option – SFTP which is an FTP with encryption. SFTP is already enabled in Raspbian and can be used right away. Be sure that your FPT client supports sftp protocol. For instance FileZilla, Bitvise and same WinSCP clients work without problem. In order … Continue reading

Internet connected power usage monitor

RasPi_energy_monitor

Our homes are filling with energy hungry devices. Some of them are constantly active like fridge, routers, lighting, some switched off or on stand-by. Each of them takes some portion of energy that reflects on the end month bill. Some things you can control, but some not. So in order to hunt inefficient nodes you need some sort of energy usage monitoring. You can find lots of implementations where some are simple indicators, other are advanced and web enabled. TSalwach @ github.com have built his own version of energy monitoring system which looks really promising. His implementation monitors all three phases where he extracts several parameters: RMS Voltages and currents on each phase Apparent power (product of RMS voltage and RMS current) Real (active) power Reactive power with inductance/capacitance indication … Continue reading

Tearing Raspberry Pi Zero apart

Raspberry Pi Zero is really minimalist but yet powerful minicomputer featuring all necessary parts required to run Linux or other operating system. It features Broadcom BCM2835 processor at 1GHz, 512MB of DDR2 RAM, micro-SD slot, mini-HDMI capable to output 1080p60 video, micro USB for data and power, 40-pin GPIO, unpopulated composite video. All this fits in to 65mm x 30mm x 5mm form factor. Price for it is ridiculously low – $5. you may need micro-USB to USB adapter and HUB if you would like to have WiFi functionality, or connect keyboard. It is ideal small embedded Linux based board that is more power efficient than standard Raspberry Pi boards and still can run powerful control applications. Lets leave this topic to other debates. electroupdate shared his video where he … Continue reading

3 Weird and Wonderful Raspberry Pi Innovations

The Raspberry Pi is one of the most acclaimed inventions of our days – a credit card sized computer with the potential to improve our lives in an incredible variety of ways, and educate a whole new generation of hardware and software engineers. In honor of the recent Pi Day (March 14th, or 3/14) and the recent launch of Raspberry Pi 2, here are five of the most interesting (and sometimes weird) innovations we could find that were built using the microcomputer of the future. 1. Picrowave by Nathan Broadbent According to his website, Made by Nathan, the web and mobile developer Nathan Broadbent first thought of a smarter microwave after reading a post on Reddit about how food should come with QR codes that tells the microwave what to … Continue reading